Physical And Chemical Changes

Question 1

Define chemical change

Answer 1

• A change that occurs causing the substance to change
• is not reversible
• Examples are burning, digesting food, bicycle rusting, and reacting with other substances
• signs of a chemical change our light heat gas color change and formation of a precipitate

Question 2

Define physical change

Answer 2

• A Change that occurs that does not change the substance
• usually is reversible
• examples are melting ice, freezing, Kool-Aid, melting cheese and breaking glass