Which is most likely a physical change? cutting a substance into four pieces burning a substance into ash and smoke reacting a substance chemically to form a new substance combining a substance with water to make rust

Option (a) is the correct answer.

Explanation:

A physical change is a change in which there occurs no change in chemical composition of a substance.

Whereas when chemical composition of a substance changes then it is called chemical change.

For example, cutting a substance into four pieces is a physical change as there occurs no change in chemical composition of the substance.

If there is 8 g of a substance before a physical change, how much will there be afterwards?

0 g

4 g

8 g

16 g

Explanation:

A

the potatoes have high sugar concentrations and although these potatoes were different we could seethe effects that their sugar concentrations had in different environments. for example, the potatoes in sample a, were placed in pure water. this created a hypertonic environment and caused the potatoes to draw in water from its surroundings. we saw the opposite happen with the potatoes in sample b when placed in the sodium chloride solution. the potatoes in this case were in a hypotonic solution and therefore lost water to their surroundings.