Chemical Reactions Quiz

What is a chemical reaction?

• A process where atoms are destroyed

• A process where new substances are formed

• A process where substances disappear

• A process where atoms are created

What is the main topic of the reading material?

• Chemical equations

• Chemical reactions

• Chemical elements

• Chemical bonds

What is a common misconception about dissolving?

• It is a chemical change.

• It is a physical change.

• It involves forming a new substance.

• It requires a catalyst.

What is the main focus of material scientists in relation to chemical reactions?

• To create new colors

• To form new products

• To increase temperature

• To reduce mass

What is the significance of the number of atoms before and after a chemical reaction?

• They increase.

• They decrease.

• They remain the same.

• They become unstable.