Why is crumpling a sheet of aluminum foil a physical change ?

Answers

Answer 1

Answer:

Answer: Because it does not change into a new substance.

Explanation:

It is a physical change because a new substance is not being formed. When you crumble a sheet of aluminum, you can uncrumple it and change it back to its original form.

Related Questions

A hailstone traveling with a velocity of 43 meters/second comes to a virtual stop 0.28 seconds after hitting water. What is the magnitude of its acceleration in the water?A. 12 meters/second2B. 1.5 × 102 meters/second2C. 78.6 meters/second2D. 6.5 × 10-3 meters/second2
ASAP WILL GIVE BRAINLIEST Take a piece of paper, some nails and a magnet bar, place a magnet at the centre of the paper, and sprinkle the nails. Observe what will happen to the nails and what other phenomena you can observe.
as you are leaving a building, the door opens outward. if the hinges on the door are on your right, what is the direction of the angular velocity of the door as you open it?
Calculate the maximum kinetic energy of photoelectrons emitted from this plate when light of wavelength (λ) 520nm is directed at the metal surface.Work function (Ф) of the plate = 1.1 × 10⁻¹⁹ JPlanck's constant (h) = 6.63 × 10⁻³⁴ JsFrequency (f) = c ÷ λc = speed light in vacuum = 3.00 × 10⁸ms⁻¹Ekmax = hf - ΦWavelength must be in metres, so it'll be 590×10⁻⁹I've worked this out and gotten two different answers so I thought I'd check to see which one is right.
Two objects collide and bounce apart. Assuming no outside forces act on the system, which best describes the total momentum after the collision?It is always greater than it was before the collision. It is often greater than it was before the collision. It is always the same as it was before the collision. It is often the same as it was before the collision.

A student who weighs 500 newtons climbed the stairs from the first floor to the third floor,15 meters above, in 20 seconds. How much work did she do

Answers

Well, the 20 seconds gives us enough information to actually calculate the power she has on her feet :)
Well, the work is 500*15=7500J, that is 7.5 kJ or about 18 calories (1 cal is 418J?) The power is that 7.5 kJ divided by 20 seconds: 375W. That's... OK, I suppose...

Answer:

Work = (500N)(15m)=7500J Power= (7500J)/(20s) =375 W

Hopefully this helps

Explanation:

Match the letters to the numbers for 30 points!1.Ca
2.H2O
3. nuclear decay
4. nuclear synthesis
5. η
6. positive charge
7. e
8. number of protons in nucleus

A.element
B.proton
C. fusion
D. compound
E.fission
F.atomic number
G. neutron
H.electron

Answers

-- 'Ca' (Calcium) is an element.
-- The proton has a positive charge.
-- Nuclear fusion results in the synthesis of atoms of new elements.
-- H₂O (water) is a chemical compound.
-- Nuclear fission is a decay of the nucleus.
-- The atomic number of an element is the number of protons
in each atom of it.
-- I suppose you're using the Greek letter η ('eta', not 'nu')
to represent the neutron.
-- I suppose you're using ' e ' to represent the electron.

1-a
2-d
3-e
4-c
5-g
6-b
7-h
8-f

A rectangle has a length of 5.50 m and a width of 12.0 m. What are the perimeter and area of this rectangle?

Answers

to find the perimeter of the rectangle, you do 2(a) + 2(b), so when you add 11 and 24, you get a perimeter of 35 meters.

to find the area, you multiply a and b together and get an area of 66 meters squared.

A train whistle is at a higher pitch (note) as it approaches you and then drops to a lower pitch as it moves away. This effect is called?

Answers

the effect is called The doppler effect

The effect being mentioned is called "The doppler effect".

What characteristics makes a substance a mineral?A. It is hard
B. It is organic
C. Its structure is crystal
D. Its a liquid, solid, or gas

Answers

Answer:c-its structure is crystal

Explanation:

A substance is called a mineral if it meets the following requirement

naturally occurring,

inorganic,

solid,

definite chemical composition,

ordered internal structure

So the definite answer is crystal structure because they have an ordered internal structure.

Hope it helps

Final answer:

A mineral is a naturally occurring, inorganic, solid substance with a specific chemical composition and a crystalline structure. Hardness may vary among minerals and they are not organic. They are solid under normal conditions on Earth.

Explanation:

A mineral is defined by several specific characteristics: it is naturally occurring, inorganic, solid, has a definite chemical composition, and has a ordered internal arrangement of atoms - structure typically crystalline in nature.

It is hard: Not all minerals are hard. The hardness of a mineral is determined by the Mohs scale. So, hardness is a characteristic but not a definition.
It is organic: This statement is untrue. Minerals are inorganic substances.
Its structure is crystal: This is true. Minerals have a crystalline structure due to the orderly, repeating pattern of their atoms.
It's a liquid, solid, or gas: This is partly correct. Minerals are solids under normal conditions on Earth.

Learn more about Mineral here:

brainly.com/question/34629711

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What is the temperature of a gas in which the atoms are moving very very slowly?

Answers

Cold.
Example: A frozen object (such as ice) is solid. Its molecules move extremely slow because the object itself isn't moving... It's like the skin on your bod... Imagine that wiggling and writhing on your bones. It's not like a gas, that can move freely and has no specific form or hold.
So again, the answer is Cold.

Other Questions

A spring has a natural length of 20cm. If a 25-N force is required to keep it stretched to a length of 30 cm, how much work is required to stretch it from 20 cm to 25 cm?

the atomic mass of potassium is 39. if its atomic number is 9, it has how many neutrons within each potassium atom?

Any object that has mass and takes up space is considered

The basic unit for mass is thea. gram. c. cubic meter. b. metric ton. d. meter.