In the experiment, you will heat up 50 grams of cold sand and 50 grams of cold water by adding hot water. Will the kind of material—sand or water—affect the temperature change? State your hypothesis.

If sand is much denser than water, then the water will warm up faster than the sand. So yes, the kind of material—sand or water—affects the temperature change.

Explanation:

I put this as my answer :)

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answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e