Chemical Changes

Baking is pretty much just ___

• astronomy
• chemistry
• biology
• physics

The science of different kinds of matter, and how that matter can change, is called ___

• physics
• baking
• chemistry
• biology

Anything made by combining two or more different things is called ___

• a solvent
• a solution
• a chemical change
• a mixture

Both baking and chemistry require careful ___

• tasting and measuring
• timing and heating
• tasting and heating
• timing and measuring

In a chemical change,  particles that make up two or more substances are rearranged to ___

• form a mixture
• form a new substance
• mix into a solid
• mix into a solution

Unlike the mixtures from our picnic, chemical changes usually ___

• can't be eaten
• can't be undone
• involve only two things
• can be seperated

Which of these is NOT an indicator of a chemical change?

• a change in color
• giving off or taking in of heat
• the release of gases
• a change in shape

Data that supports or disputes a scientific idea is called ___

• guesses
• evidence
• a theory
• a hypothesis

All the little holes in the spongy-looking cake were caused by ___

• liquid oxygen
• oxygen gas
• carbon dioxide gas
• frozen carbon dioxide

Change in color, release of smell or light, and giving off heat are indicators of ___

• a nuclear change
• a physical change
• a chemical change
• a state change