SCIE

Question 1

Identify the evidence of chemical or physical changes in the experiment.

Answer 1

The products have different properties than copper sulfate and zinc.

Question 2

This means that the copper sulfate and zinc atoms are rearranged to make different substances.

Answer 2

Explain why Selina is correct or incorrect using evidence from the experiment.

Question 3

THE EVIDENCE OF A CHEMICAL REACTION is the change in color, energy being released as HEAT, and the formation of a PRECIPITATE

Answer 3

Describe what happened to the copper and zinc atoms during the experiment. Explain your answer. Selina is correct. After the experiment, the solution and solid have different properties than the copper sulfate and zinc. The new substances are not copper sulfate and zinc, because the properties are not the same. Therefore, a chemical reaction happened that changed the copper sulfate and zinc into different substances.