Kitchen Changes: Physical vs Chemical

What type of change occurs when bread is baked?

• Physical change

• Chemical change

• No change

Which of the following is a physical change?

• Baking bread

• Melting butter

• Cooking an egg

Explain why melting butter is considered a physical change.

• It changes the size or shape but not what it is

• It creates milk

• It becomes frozen

Why is a metal pan rusting considered a chemical change?

• It looks the same

• It creates something new, rust

• It melts

Which of the following best describes the process of dissolving sugar in water?

• Physical change

• No change

• It burns

What evidence suggests that baking bread is a chemical change?

• The dough shrinks

• The dough changes color and produces gas

• The dough melts

Why is cooking an egg considered a chemical change?

• The egg changes color and smells

• The egg melts

• The egg freezes

What is the main difference between a physical and a chemical change?

• Physical changes are reversible, chemical changes are not

• Chemical changes look prettier

• Both are the same thing

Explain why rusting is a problem for cooking pans.

• It makes the pans look better

• It makes the pans weak and can poison the food

• It makes the pans stronger

Which of the following foods created using physical changes only?

• Fruit smoothie
• Scrambled eggs

• Birthday Cake