Why is crumpling a piece of paper a physical change and not a chemical change? Please help!!

Answers

Answer 1
its a physical change because ur changing its form but its still paper. chemical is when u basically change what it is (ex= water to ice)
Answer 2
You can uncrumple the paper and nothing about its structure changed

Related Questions

A(n)__________ is a long chain of amino acids.

Answers

A polypeptide is a long chain of amino acids.

Name a unique trait about each planet in our solar system

Answers

Mercury - Mercury has "wrinkles". As the iron core of the planet flattened and contracted, the surface became wrinkled, which is what scientists call Lobate Scarps.
Venus - Venus rotates in the opposite direction of most planets.
Mars - Mars will have a ring. It's largest moon, Phobos, will (in about 20-40 million years) be pulled apart by gravity and the material left behind will turn into a ring.
Jupiter - Jupiter has the shortest days of all the planets. It takes 9 hours and 55 minutes.
Saturn - Saturn is our solar system's flattest planet.
Uranus - Uranus actually has two sets of very thin, dark colored rings.
Neptune - Neptune has 14 moons and one of which is believed to be the coldest place in our solar system.
Hope this helped!

Mercury: It is the closest planet to the sun, so it orbits the sun very quickly just in 88 days. Its surface is gray to orange in color and it is covered with craters. It is a small planet, just 4850 kilometers (~3000 miles) in diameter. The side of its surface which is facing the sun is extremely hot as 700oK.

2. Venus: Its surface is a brownish-yellow color because of its thick atmosphere which is composed of largely of sulfuric acid and CO2. Its size is a little over 12,000 kilometers (7300 miles) in diameter. It rotates the sun in 243.

3. Earth: It rotates the sun every 365 days (year) and rotates in its axis every 24 hours (day). Its size is a little more than 12,000 kilometers in diameter. This planet is different form other planets as it maintains life on its surface. It has a moon.

4. Mars: It takes 687 days to revolve around the sun. Its surface is covered with craters, volcanoes, and large canyons and it has a very cold atmosphere. It has two moons.

5. Jupiter: It is the largest planet of the solar system as a diameter of 142,980 kilometers. It orbits the sun every 12 years.

6. Saturn: It is a large planet as 120,536 kilometers. It orbits the sun in 12 years. It is well-known for its system of three rings, it has also 47 moons.

7. Uranus: It rotates the sun in 84 years, its size is 51,118 kilometers in diameter. It is surrounded by a system of nine rings.

8. Neptune: Its size is 49,500 kilometers in diameter. It orbits the sun every 165 years.

Select all that apply. The Chordata phylum consists of _____.
tunicates
lampreys
stingrays
lancelets
trout

Answers

The answer is tunicates. Tunicates are commonly known as sea squirts and are in the Chordata phylum, even though they don't have a back bone. Which is really weird. But they just got put into the same category as humans. This is because they have a notocord and a back bone when they are larvae. But they lose all these when they become adults.
Tunicates is your answer!

Tiny structures in the cell that carry out the cell's activities are

mitochondria
nucleus
organelles
cyotplasm

Answers

Organelles :) The mitochondria and nucleus are examples of organelles, and the cytoplasm is the medium in which the cell's activities takes place :) 
Hope this helps

____________ have helped us learn about animals that are now extinct.

Observations
Written records
Fossils
Rocks

Answers

It would be C. Fossils
Fossils, in order to understand animals that are now extinct we rely on fossils to give us information such as how they were built and what they ate.


P (purple) and p (white) are the dominant and recessive alleles for flower color in peas. Similarly, A (axial) and a (terminal) are the dominant and recessive alleles for flower position in peas. Two plants with the genotype PpAa are crossed. Which genotype is indicative of white axial flowers?

PpAa is indicative of white axial flowers.



PPAA is indicative of white axial flowers.



ppAa is indicative of white axial flowers.

Answers

Answer:

Option C, ppAa is indicative of white axial flowers.

Explanation:

It is given that Purple color (P) is dominant over white color (p). Thus in order to have a flower of white color , the flower must be homozygous recessive with an allele pair having two recessive alleles.

Similarly, Axial (A) is dominant over terminal (a) flower. Thus, a flower can be axial in two cases -

a) when both the alleles are same i.e AA

or

b) when one allele is A and the other one is a i.e Aa

Considering the above cases, all possible allele combination that will produce white axial flower are as follows -

ppAA, ppAa

Thus, option C is correct

Answer:

C

Explanation:

Why is a squid considered a cephalopod

Answers

It has feet attached to its head. Cephalopod is a Greek word, where cephalo means head, and pod means foot. So a possible translation would be head-foot, which means that the feet are attached to the head. An octopus, or an octopod, means that it has 8 legs, because octo means 8, and pod means foot. 

how do scientist develop scientific explanations about subjects that are impossible to study through controlled experiments?

Answers

A scientist could use a model to represent what you are trying to experiment, thus making it possible to come up with an explanation for an answer.

in some places, granite rock extends as deep as:

Answers

50 kilomiters

hope this helps;)

I think is 50 kilometers

Describe four real-life examples of the results of scientific investigations?

Answers

A real life example of a scientific investigation is CSI. Specialists examine crime scenes using science to determine what happened.
================================

Looking for your house keys:

hypothesis 1.: "my keys are in my jacket pocket."
test 1. - look in jacket pocket, keys not there.
hypothesis 2.: "they are on top of my dresser."
test 2.- look on dresser, keys not there
hypothesis 3. - "I left them in the front door last night"
test 3. - look in door, keys are there.

The scientific method just means proposing an hypothesis, testing it, and (re-)proposing a (new?) hypothesis based on the data, and testing that one ... and repeating.

So figuring out why your DVD won't play on your new TV, looking for your keys, and so on can all be accomplished through the scientific method.

(Cred to answer: Unknown )

Answer:

From the beginning of the science, there are several scientific investigations that took place to propose a hypothesis and test these by scientific methods if these are true or not.

The some of the real life examples of the result of these scientific investigation are

Technology that helps humanity by several possibilities, helps in the transportation, medicine or health sector by developing drugs, and electricity that helped daily life of a human as vital resources.

In grafting, the plant with the root system is called the , and the portion of the plant with the buds is called the .

Answers

The plant with the root system is called the rootstock


the portion of the plant with the buds is called the scion

Answer:

In grafting, the plant with the root system is called the root stock , and the portion of the plant with the buds is called the scion

Explanation:

Grafting is a process of “vegetative mode of propagation “ in which  two parts of same or two different species of plants are joined together to make them grow as a single plant. The part of the plant which is kept over and above the other plant is called the “scion” while the part of the other plant kept at the bottom is called a rootstock.  

Thus, in grafting, the plant with the root system is kept at the bottom and hence it is called as root stock , and the portion of the plant with the buds is kept over and above the root stock and hence it is called as scion.

Which of the following is true of all minerals?

Made of many different elements

Come from the ground as crystals

Can be liquids, solids, and gases

Made of one or more elements from the periodic table

Answers

Answer:

Made of one or more elements from the periodic table

Explanation:

Minerals are natural occurring inorganic solid substance that have a definite crystal structure and definite chemical formula. The crystal structure in minerals are usually well organised. Mineral are made of one or more elements from the periodic table. Example of minerals formed from a single elements are carbon(graphite), gold and silver. Like for the gold which are called native elements rarely combines with other elements.  The atoms, molecules and ions that formed the minerals are well structured in a geometric way.They are arranged in particular pattern. Minerals can also be formed from more than one elements example are the silicates minerals.

From the option A not all minerals are made from different elements but most metals are made from combination of different elements.

Not all minerals come from the ground as crystal some crystallize at the surface of the earth.

Minerals are not gaseous and liquid in nature. All minerals are solid in nature.

Minerals are made of one elements or more than one elements from the periodic table.

The picture above illustrate how mineral looks like.

Answer: Made of one or more elements from the periodic table

Explanation:

Why do scientists use significant digits?

Answers

Significant figures tell us how to round, but they also make sure that the answer we get from a math problem is not more precise than the numbers that we started with. 

Take a rubber band, and stretch it between the thumb and index finger of one hand. Hold it there for as long as you can.

At what state is the energy in the rubber band?

As your hand gets tired, what state of energy is it fighting against?

Release the rubber band from your finger. At what state is the energy in the rubber band as it is released?

Answers

When the rubber band is stretched between her fingers it is in the potential energy state. Your hand is fighting against the rubber bands kinetic energy. As you let go of the rubber band it changes to kinetic energy.

How does a radio wave differ from a gamma ray? Frequency only Wavelength only Both the wavelength and the frequency Their speeds


Ik its not biology its just the only thing i saw

Answers

wavelength, the longest being radio waves and the shortest being gamma rays
It will be there speed

How do you get a scar from a pimple?

Answers

From scratching it and not cleaning it
Other Questions
Which one of the following is the base form of a verb preceded by the word to? In your day-to-day routines, you use math when you go to the grocery store, bank, mall and when cooking. How do you imagine that you will use math in your healthcare career? A patient is taking bismuth subsalicylate [pepto-bismol] to prevent diarrhea. the nurse performing an assessment notes that the patients tongue is black. what will the nurse do? 32% of 300 is what number? A.96 B.64 C.32 D.90 Structures that extend from the lateral walls of the nasal cavity are called nasal What is the future value of a $1,500 investment, earning 10 percent interestper period, after two periods? (Round your answer to the nearest cent.) Brenda needs $40 to buy a large box of chocolate. She has saved $12 and plans to work as a babysitter to earn $7 per hour. Which inequality shows the minimum number of hours, n, that Brenda should work as a babysitter to earn enough to buy the large box of chocolate? An awareness of words, their meanings, and the cognitive and emotional effects they have, is known as A. etymology. B. communication. C. word consciousness. D. word choice (or diction). What did the people's party believe would result from government taking control of americas railroads and banks During the ________ phase of the systems development life cycle process, developers construct, install, and test the components of the information system. Complete the equation and tell what property you used 16+31=31+16 simplify (4x-4)-3 , pleas help 1/12 as a decimal. Long division. Why does madison fear a gradual concentration of the several powers in the same department of government? The process of using wood to create mosaic images, as used in the design by francesco di giorgio martini to decorate a private studio for the duke of urbino around 1480, is called ________. Consider the incomplete reaction below.NaOH + X mc005-1.jpg NaCH3COO + H2OWhat is X in this reaction?NH4OHH3PO4H2CO3CH3COOH discuss four factors that lead to poverty in your community Choose a number. add 5. multiply by -4. subtract 3. for each starting number what is your ending number ? Superb pianist, improviser, and composer; he was a member of the rhythm section of the miles davis quintet of 1965-68: The video says, If you cant study fish in the sea, set up an aquarium. Essentially, when you cant conduct a study in the real world, build a model. What are some of the benefits and drawbacks of this idea? Steam Workshop Downloader