1: Which of these is a chemical property of a substance

reactivity
color
boiling point
melting point




2: what does the release or absorption of energy indicate

physical change
chemical change
physical and chemical changes
neither physical nor chemical changes




3: which of these is an example of a physical change

breaking bread
baking bread
digesting bread
toasting bread




4: which of these is an example of a chemical change

cutting bread
spreading peanut butter
digesting a sandwich
stirring jelly




5: which of these is an example of a chemical change

fireworks exploding
grinding powder
melting cheese
ironing a shirt





Answers

Answer 1
1:Reactivity
2:Physical and Chemical Changes
3:Breaking Bread
4:Digesting a Sandwich
5:Fireworks Exploding
Good Luck:)
Answer 2

1. Reactivity

2. Chemical change

3. Breaking Bread

4. Digesting a Sandwich

5. Fireworks Exploding

Reactivity is the chemical property of a substance which describes its personal chemical reactions and also its interaction with other substances. Substances react when they are placed under conditions such as temperature, pressure, presence of catalysts and in combination with various substances.

A chemical change is a process in which one or more substances are changed into one or more new and different substances. In a chemical change there is a new arrangement of atoms, the energy of the system is altered and the change cannot be reversed. A chemical change that absorbs heat is an endothermic reaction while the one that releases heat is an exothermic reaction.




Related Questions

What is an agency used the help former slaves adjust to life after slavery

Answers

Freedmen was an agency in 1865 that was set up to help former slaves adjust to life after slavery and it supplied slaves their needs and assisted blacks by helping them get jobs.

Final answer:

The Freedmen's Bureau, officially known as the Bureau of Refugees, Freedmen, and Abandoned Lands, was established in March 1865 to assist former slaves and poor Whites with food, clothing, medical aid, legal contract facilitation, and education, playing a key role during the Reconstruction period.

Explanation:

The agency created to help former slaves adjust to life after slavery was the Bureau of Refugees, Freedmen, and Abandoned Lands, commonly known as the Freedmen's Bureau. Established in March 1865, its initiatives included distributing food, clothing, and medical aid to formerly enslaved people and poor Whites, creating over 1,000 schools throughout the southern states, and facilitating legal contracts for work. This federal entity played a crucial role in aiding African Americans' transition to freedom and advocating for their rights during the Reconstruction period, despite facing numerous challenges and opposition. The Freedmen's Bureau also focused on reunification of families, land distribution discussions, and the establishment of educational institutions that became pillars of higher learning for African Americans. Institutions such as Fisk University, Hampton University, and Dillard University are part of its legacy. However, its efforts in land redistribution were eventually reversed, underlining the complexities of post-Civil War reconstruction and the Bureau's limited success in changing the socio-economic plight of the freed people.

Which best describes the Persians' rule?

Answers

The Persians ruled through a system of regional administrators, were known for monumental architecture like Persepolis, and practiced a policy of leniency towards conquered peoples, letting them maintain their own customs, languages, and religion.

The rule of the Persians can best be described as a combination of organization, tolerance, and monumentalism. The Achaemenid (Persian) Empire, under kings like Cyrus the Great and Xerxes, controlled vast territories that were administrated by regional governors called satraps, often connected to the royal family. This system facilitated the Persians' territorial expansion and helped them to rule an estimated 44 percent of the human population by the early fifth century B.C.E.

Notably, the Persian kings were recognized for their monumental architecture and art, which included remarkable sites like Persepolis in present-day Iran. These structures were not only aesthetic masterpieces but also served as ideological tools to represent the might and reach of the Persian rule. Moreover, the Persians were known for their relatively lenient treatment of conquered peoples, focusing on loyalty, tax collection, and military support, rather than oppression, which allowed subjects to maintain their languages, religions, and customs.

This form of governance stood in stark contrast to the terror tactics employed by earlier empires such as the Assyrians and Neo-Babylonians. The strategic governance, which included religious, cultural tolerance and the use of art and architecture to convey messages of power, proved to be effective until the fall of the empire.

Whether active or passive resistance was more effective leading up to the civil war?

Answers

Passive resistance was more effective leading up to the war because many of the groups involved in the resistance, such as the Black panthers, stood fast on the concept of self defense, which prevailed when those that argued for resistance and self defense were victorious after lynchings that attempted to provoke violence.

which island was influenced by islam first: borneo or mindanao

Answers

The first island that was influenced by Islam was Mindanao and later on they started influencing other islands like Borneo.

Answer:

Mindanao

Explanation:

Mindanao is the second largest island in the Philippine archipelago, with 97 530 km² (the 19th largest in the world) and is also the name of one of the three groups of islands that make up the country. The Muslim Autonomous Region of Mindanao, created in 1989, is located on the island. This was the first island to be dominated by Islam, after that, Islam began to spread to other regions even reaching Borneo.

18. customer service is an example of
A. price competition
B. non-price competition
C. a monetary incentive
D. a non- monetary incentive

19. bank most help grow the economy because
A. they provide loan for consumers and investors
B. they are difficult to steal from
C. they are backed by the federal government
D. they offer both checking and savings account

20. Labor union are most closely tied to which type of productive resource?
A. entrepreneurship
B. natural resources
C. capital resources
D. human resources


Answers

The answers are c, a, and c

What part of an atom bonds with other atoms? Question 1 options: the innermost electrons valence electrons any electrons the outermost protons

Answers

the outermost protons

The answer to this question would be: valence electrons 

Atom bond should be using electrons. Neutron or proton is making the atom nucleus in the middle. They won't move, so they won't collide with other atoms. The outermost electron would be the answer. Valence electron is also known as outermost electron, so the answer should be valence electrons

How does serving in the armed forces,if called, benefit the United States

Answers

It calls towards a better lifestyle to the citizens of the United States, providing a safer environment towards the civilians. You protect your country from terrorism.
 providing a safer environment towards the civilians. You protect your country from terrorism.

write 1-2 paragraph arguing whether active or passive resistance was more effective leading up to the Civil War

Answers

When analyzing the Civil War, perhaps the foremost influencer of this was active resistance on behalf of the slaves at the time who wanted their freedom, as well as the central government in the north that aimed to abolish slavery and implement more equal opportunities.

Where did Labor Day originate?

Answers

The first day September, It honors the American labor movement and the contributions that workers have made to the strength, prosperity, laws and well-being of the country
it is dedicated to the social and economic achievements of american workers

Who was responsible for writing the amendments that later became the Bill of Rights
answer choices
-------------------------------
• George Washington
• Patrick Henry
• George Mason
• James Madison

Answers

James Madison was responsible for writing the amendments that later became the Bill of Rights

Hope this helps :)

Answer:

james madison did it

Explanation:

Which invention had the greatest effect on the spread of information

Answers

Gutenberg's printing press because it made it easier to copy information/books

Why did European sail out to export unknown oceans and seas?

Answers

To find treasure and lands to concer sorry for bad spelling and to find a faster trade root to asia

When Benito was five he cut his leg on some glass and needed stiches. Years later, his mother tells him the scar came from being bit by a dog. Now, when people ask about his scar he distinctly remembers the dog biting him. This is an example of the

Answers

This is an example of the Placebo Effect.

Answer:

This is an example of the misinformation effect paradigm.

Explanation:

The misinformation effect is the consequence caused because of inaccurate memory of the person about any past event. The person is exposed to a post-event information which omits the memory. The information which the person is exposed to later interferes with the possibility of retaining the previous memory. The new information which the person receives starts to work actively, thereby placing itself in the position of the memory.

to test a hypothesis, a scientist purposely changes the dependent variable.
truth or false

Answers

That statement is false
The scientist should purposely changes the independent variable.
Independent variable refers to the variable that is not affected by other variables. So if we change a certain the independent variable and the outcome is also changed, we will know that that specific variable is affecting the outcome.

how did the other groups already living in the valley of mexico treat the Aztecs?why might the aztecs have eliminated this part of the story from their "official" histories later?

Answers

They where treated poorly and removed this due to the fact that they did not want there precursors to know about this ecperience

Final answer:

The Aztecs interacted with different groups in the Valley of Mexico, who treated them in various ways. The Aztecs may have later eliminated this part of their history because it reflected their conquest and subjugation of other groups.

Explanation:

The Aztecs, a civilization based in the Valley of Mexico, interacted with different groups that were already living in the region. These groups treated the Aztecs in various ways, depending on their own interests and circumstances. Some groups formed alliances with the Aztecs, while others were subjugated and required to pay taxes and tribute. The Aztecs were also feared throughout Mesoamerica, especially because of their practice of human sacrifice.

The Aztecs may have eliminated this part of the story from their 'official' histories later because it reflected their conquest and subjugation of other groups, which could have been seen as a source of embarrassment or weakness. It was common for ancient societies to promote a more idealized version of their history, focusing on their accomplishments and glory.

GDP is a valid method of measuring

Answers

Gross Domestic Product, the amount money made

which of the following is the correct response when the national weather service issues a severe weather watch.

A. Evacuate immediately

B. Seek shelter immediately

C. Begin to prepare

D. Take immediate action

Answers

Your answer is going to be C

Answer:

Answer is C!

Explanation:

What direction would you travel if you wanted to fly from India to United Kingdom

Answers

u would fly east ward
you would go east to get to america from the UK

What do you notice about population distribution and settlement location in ancient egypt

Answers

People are mostly near the Nile river cause of the water and agriculture

Please help fast~
Will mark brainliest~

How does China's economic boom negatively impact society?

A. too many goods to export

B. growing economic inequality

C. an overpopulated labor force

D. increasing religious suppression

Answers

It could be B, C, or D. Sorry for the uncertainty.

When we're the Middle Ages?

A: before medieval
B: between ancient and modern times
C: after modern times
D: between medieval and ancient times

Answers

D !DDDDDDDDDDDDDDDDDD
It’s going to be D. Middle Ages is the name for medieval times. :) hope this helps:)

Why was the Boston Tea Party seen as an act of rebellion?
It was a protest that included the illegal dumping of a shipment of goods.
It was a violent clash that led to the death of colonists at the hands of British troops.
It was a series of protests that harmed British trade and led to the repeal of the Stamp Act.
It was a sizable cancellation of tea orders to boycott the shipment of British tea into the colonies.

Answers

It was seen as an act of rebellion because the colonists blocked off the docks and a secret society snuck on to the boats with the tea dressed as native Americans and dumped the tea overboard. Showing they won’t pay the taxes on tea and wasting the money of shipping the tea. They also boycott British goods

The Boston Tea Party seen as an act of rebellion because It was a protest that included the illegal dumping of a shipment of goods. The appropriate response is option A.

What is Boston Tea Party?

The Boston Tea Party was a political demonstration that took place at Griffin's Wharf in Boston, Massachusetts. 342 chests of tea that had been imported by the British East India Company were dumped into the harbor by American colonists who were outraged with Britain for enforcing "taxation without representation."

The incident represented the colonists' first significant act of rebellion against British rule. It inspired Americans in all 13 colonies to fight for independence by demonstrating to Great Britain that Americans would not accept taxation and tyranny passively.

Because the colonists closed off the docks and a secret society sneaked onto the boats carrying the tea dressed as Native Americans and poured the tea overboard, it was perceived as a rebellious act. Demonstrating their unwillingness to pay tea taxes and wasting the cost of shipping the tea. They also refuse to buy British products.

Hence, option A is an appropriate response.

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Most likely reason a state might choose to nullify a law is

Answers

Answer:

the people disagree with the decisions made by the federal government

Explanation:

Jo secretly _____.

gets two stories published in the newspaper
has a suitor
has feelings for Laurie
makes dinner for the family

Answers

Jo secretly___.
A. Gets two stories published in the newspaper. A is your awnser

Answer:

A.

Explanation:

What did Elizabeth Freeman's heroic impact leave behind?

Answers

Elizabeth Freeman, also known as Bet or MumBet, was the first black slave to file and win a freedom suit in Massachusetts. n_n *i hope this helps you!*
Final answer:

Elizabeth Freeman, known as Mum Bett, had a significant impact on the abolition of slavery in Massachusetts through her successful lawsuit for freedom in 1781, which contributed to the state's abolition of slavery in 1783.

Explanation:

Elizabeth Freeman, also known as Mum Bett, played a pivotal role in the historical movement towards the abolition of slavery in Massachusetts. Her lawsuit for her own freedom in 1781, which she won, not only emancipated her but also set a precedent that led to the Massachusetts Supreme Judicial Court ruling in 1783 that effectively made slavery illegal in the state. Freeman's courageous actions and the legal precedents set by her case left a lasting legacy that contributed significantly to the abolitionist movement in the United States. Her story is a powerful testament to the impact one individual can have on social change and justice.

What compromise was made during the Indian Removal Act of 1830?

Answers

Signed Into law by president andrew jackson on may 28, 1830

Hoped i helped!
Final answer:

The Indian Removal Act of 1830 resulted in the forced relocation of Native American tribes without a direct legislative compromise. It led to the Trail of Tears and the fragmentation of tribes such as the Cherokee and Seminole.

Explanation:

The Indian Removal Act of 1830 did not include any compromise as part of its formulation or enactment. The act facilitated the forced relocation of Native American tribes living east of the Mississippi River to lands west of the river, primarily to what is now Oklahoma. This relocation is notorious for the Trail of Tears, a term that refers to the suffering and deaths of thousands of Native Americans during their forced migration. President Andrew Jackson sanctioned the policy, capitalizing on widespread sentiment among white settlers and hunger for land.

Some tribes attempted to resist, the most fervent resistance coming from the Five Civilized Tribes - the Cherokee, Creek, Choctaw, Chickasaw, and Seminole. Others attempted to renegotiate and escape removal, such as the Iroquois (Haudenosaunee), while leaders like Black Hawk tried to lead their people back to their homelands, only to face defeat. The fragmentation of Native American groups was a lasting consequence of the Indian Removal Act - for instance, separating the Cherokee and Seminole into different groups based on those who relocated and those who were able to stay behind.

What is the meaning of the inscribed phrase above the entrance of the Temple of Apollo?

Select the best answer choice.
a."I am Apollo"
b."Knowledge is key"
c."Experience is the root of all knowledge"
d."Know thyself"

Answers

I think its going to be d

Answer:    D. "Know thyself"

Explanation:  The Temple of Apollo in Delphi, in ancient Greece, was a sanctuary where destiny was foretold to people, hence the place of the holy oracle. When people were in a crucial situation, they would go to this temple to find out what to do next. The inscription that stood above the entrance signified the meaning and depth of the ancient religions, which can still be heard today through the various influences of these religions. Knowing yourself means to dive into the depths of our own selves, to understand who we are and what we are, and in this way we reach the divine, after which further paths in life are opened.

what did Martin Luther King Jr. do during the civil rights movement?

Answers

b. Organized peaceful mass protests

how did Frederick W. Taylor studies impact industry in the early 1900s?

Answers

He was one of the first management consultants.
Final answer:

Frederick W. Taylor's scientific management theories, defined in his book 'The Principles of Scientific Management', transformed early 20th century industry by introducing improved work methods to enhance productivity and efficiency.

Explanation:

Frederick W. Taylor significantly impacted industry in the early 1900s through his development of scientific management theories. His most notable work, The Principles of Scientific Management, put forth new methods to improve workplace efficiency and productivity. Taylor proposed that industries could improve output by systematizing work processes using time and motion studies, essentially transforming workplaces into efficient machines.

These ideas were brought into practice, for example, with workers handling heavy iron ingots where Taylor showed that productivity could be improved by scheduling work rests. This not only enhanced worker efficiency, but also led to better wage outcomes as workers were usually paid based on output. The principles of scientific management, although criticized for potentially exploiting workers, revolutionized industries by streamlining operations, reducing costs, and significantly increasing productivity.

Overall, Taylor's theories fostered an entreprenurial approach to business and significantly influenced industrial growth in the early 20th century. Today, the principles of Taylorism continue to have a profound impact on business operations and management practices.

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Which of the following defines Homo erectus? a. thinking man c. wise man b. modern man d. upright man Please select the best answer from the choices provided A B C D

Answers

d upright man is the answer
Homo erectus literally means “upright man” in latin, so it’s D.
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I need some helpA student is revising the sentence below:Using the spell check function is the most basic revision step a writer can undertake.Based on the context of this sentence, which would be the best synonym for basic? Essentialof the utmost importance Plainuncomplicated; pure or natural Primaryfirst in order of importance, value, or rank Simplemade up of necessary elements; important Why is it critical to provide proper treatment for minor and moderate sports injuries within the first 48 hours after sustaining the injury?A.It means the athlete can continue playing without interruption.B.After 48 hours, the injury is likely to become permanent.C.It accelerates the recovery and healing process.D.Without proper treatment, the injury will not heal properly. What is the relationship between the pharyngitis and subsequent rheumatic fever? With what possible cardiac involvement is Sonyas physician concerned? PLEASE HELP ASAPSTORIES OF USEFUL INVENTIONS, excerptBy S. E. Forman1911THE MATCHThere never was a time when the world was without fire, but there was a time when men did not know how to kindle fire; and after they learned how to kindle one, it was a long, long time before they learned how to kindle one easily. In these days we can kindle a fire without any trouble, because we can easily get a match; but we must remember that the match is one of the most wonderful things in the world, and that it took men thousands of years to learn how to make one. Let us learn the history of this familiar little object, the match.Fire was first given to man by nature itself. When a forest is set on fire by cinders from a neighboring volcano, or when a tree is set ablaze by a thunderbolt, we may say that nature strikes a match. In the early history of the world, nature had to kindle all the fires, for man by his own effort was unable to produce a spark. The first method, then, of getting fire for use was to light sticks of wood at a flame kindled by natureby a volcano, perhaps, or by a stroke of lightning. These firebrands were carried to the home and used in kindling the fires there. The fire secured in this way was carefully guarded and was kept burning as long as possible. But the flame, however faithfully watched, would sometimes be extinguished. A sudden gust of wind or a sudden shower would put it out. Then a new firebrand would have to be secured, and this often meant a long journey and a deal of trouble.In 1827, John Walker, a druggist in a small English town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. The druggist had discovered the first friction-chemical match, the kind we use to-day. It is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. Although Walker's match did not require the bottle of acid, nevertheless it was not a good one. It could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. In a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. The match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. It would ignite when rubbed on any dry surface, and there was no longer any sputtering. This was the phosphorus match, the match with which we are so familiar.How does the author convince readers that the match was "the most wonderful thing in the world"? Please respond in three to five complete sentences, using evidence from the text to support your answer How did the whiskey rebellion reveal george washington's concerned with national security? 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