Exploring Chemical and Physical Changes

What time of day is it when Ahmir and Gracie are in the kitchen?

• Morning

• Noon

• Afternoon

• Evening

What happens to cookie dough when it is rolled back together?

• It becomes liquid

• It changes into a different substance

• It evaporates

• It remains the same as before

What is the state change when water turns from liquid to gas?

• Freezing

• Condensation

• Evaporation

• Melting

Tags

NGSS.MS-PS1-4

Who introduces themselves as a celebrity food scientist?

• Ahmir

• Gracie

• Mom

• Emotion

What type of change occurs when frying an egg?

• Physical change

• Chemical change

• No change

• Reversible change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What happens to the proteins in an egg when it is cooked?

• They remain the same

• They dissolve

• They evaporate

• They uncurl and join together

Tags

NGSS.MS-PS1-4

What is formed when the sugars in toast react with amino acids?

• New molecules

• Ice

• Water

• Gas

Tags

NGSS.MS-PS1-2

What does wood plus oxygen create when a match is burned?

• Solid and liquid

• Gas and liquid

• Smoke and ash

• Water and ash

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the reaction when sodium bicarbonate and citric acid in Alka-Seltzer react with water?

• Evaporation

• Chemical reaction

• Physical change

• No reaction

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Why can't the eggs and toast be changed back after being cooked?

• They are chemically changed

• They are too hot

• They are physically changed

• They are evaporated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5