Why is a piece of apple rotting a chemical change

Answers

Answer 1

Answer: Because the glucose (and other useful substances) are no longer there after the rotting (the substance itself changes, rather than simply changing some state of the same substance)

Answer 2

Answer: Because you can't change it back to the way it was before it rotted.

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It is so hard i do not get it

Answers

because your doctor gave it to you for a reason. THey gave you medicine to help you and they told you to take those pills so you should listen.

hope this helps

What is the answer to 4x - 16

Answers

it simply equals 4x-16.......
the expression is in lowest terms, so you can’t do anything else

Answer:-64

Explanation:

Whats a material made of oxygen and silicon

Answers

Magma/Lava is mainly composed of silica, with some traces of oxygen. :D

Lava is mostley silicon with a little oxygen.

What is it when a cup of ice turns to water

Answers

I don't really know what your question is asking so I am just going to list a few facts that I think might be what you are asking.

Ice turning into water is a physical change. The ice is undergoing the process of melting which does not change it chemically (ice and water are chemically identical in the sense that they are both composed of H₂O molecules) and the only difference between water and ice is that water molecules have a higher average amount of energy than the ice molecules do. When a substance melts, the molecules within the substance gain energy (in the form of heat) which allows them to break the intermolecular forces keeping them together. Since the melting of ice requires energy, the process is endothermic which means that the ice had to get energy from its surroundings and that water has more energy than ice does as a result of the process (ΔH is positive).

I hope that helps. Let me know in the comments if anything is unclear or if I did not answer your question.

Answer:

The freezing point is the temperature at which a liquid turns to a solid. ... This temperature is referred to as the melting point when temperatures rise above 32°F (0°C), causing ice to melt and change state from a solid to a liquid (water), as happened with the cup of crushed ice at room temperature.

Explanation:

Cohesion of water molecules, giving water the ability to support forces pulling against the surface.A. Cohesion

B. Surface tension

C. Adhesion

D. Capillary action

Answers

C. Adhesion i think

After decaying for 48 hours,1/16 of the original mass of a radioisotope sample remains unchanged. What is the half-life of this radioisotope?

Answers

Half-life is the period in which radioisotope sample halves it's mass.
If 1/16 of the sample remains it means that there were 4 half-life periods (16=2⁴)
4 half-life periods = 48 hours /4
half-life period = 12 hours

Hope it helped :)

The radioisotope is an unstable chemical element. The half-life of the radioisotope after decaying for 48 hours is 12 hours.

What is half-life?

Half-life is a period taken by the radioisotope to get decayed by half the original amount. The half-life is the time that is needed by the reactant to get decreased and form the product.

If the sample remained is 1/16 then there are 4 half-life periods present.

4 half life = 48 hours ÷ 4

= 12 hours

Therefore, 12 hours is the half-life period.

Learn more about half-life here:

brainly.com/question/15166478

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