Question

What do these two changes have in common?

sauce burning on a stove
dry ice sublimating and becoming a gas
Select all that apply.
a.Both are caused by heating.
b.Both are only physical changes.
c.Both conserve mass.
d.Both are chemical changes.

Answer 1

Sauce burning on a stove is a chemical change while dry ice sublimating is a physical change; however, both processes conserve mass the correct option is c.

Step-by-step explanation:

The commonality between sauce burning on a stove and dry ice sublimating and becoming gas is that both involve a change in the state of matter. When sauce burns, it undergoes a chemical change, transforming into new substances with different properties. On the other hand, dry ice sublimating is a physical change as the carbon dioxide goes from a solid state directly to a gas state without becoming liquid, and this process does not alter the molecular structure of the substance. Both processes also conserve mass, following the law of conservation of mass, which states that mass is neither created nor destroyed in a chemical reaction or physical change. Therefore, the correct answers would be:

Both conserve mass (c).

Sauce burning on a stove is a chemical change, while dry ice sublimating is a physical change.