Changes of Matter 2.3

This physical property describes the amount of matter in an object:

• volume

• density

• mass

• solubility

Which of the following indicates a PHYSICAL change?

• Change in temperature
• Change in shape
• Formation of a precipitate
• Change in color

Is this a physical or chemical change?

• Physical

• Chemical

Bubbles form when water boils. Is this evidence of chemical change?

• Yes, because water is changing.

• Yes, because the water is reacting.

• No, because the vapor is still water.

• No, because water doesn't react with anything.

Every chemical change involves a transfer of ______.

• mass

• volume

• density

• energy

Which process is an example of a physical change?

• Ice melting

• Milk souring

• metal rusting

• wood burning

Which process is an example of a physical change?

• Cutting Carrots into pieces and mixed in a salad

• A peanut butter and jelly sandwich being digested

• Sodium metal and water combining to form a compound and a gas

• Sodium metal and chlorine gas combined to form table salt

Which process is an example if a physical change?

• Water turns to steam when boiled

• Carbon combines with oxygen to form carbon dioxide gas

• Water breaks down into hydrogen and oxygen gases over time

• Limestone breaks down into lime and carbon dioxide if heated

Which process is an example of a physical change?

• paper burning to ash

• dough being baked into bread

• apple juice turning into vinegar

• rock being crushed into gravel

Pablo notices that ice cream melts when left out at room temperature. What is Pablo observing?

• A physical change

• A chemical change

• A chemical reaction

• The formation of a new substance