Physical/Chemical Properties and Changes

What is the formula for calculating density?

• Mass ∗ Volume

• Volume ∗ Mass

• Mass / Volume

• Volume / Mass

What is the density of water?

• 1 mL

• 1 gram

• 1 g/mL

• All of the above

What is an example of a physical property?

• reactivity

• state of matter

• flammability

• toxicity

What is an example of a chemical change?

• A Hair Cut
• Chopping Down a Tree
• A Rusting Nail
• Ice Melting

Which box has a higher density?  

• Box A
• Box B
• cannot be determined
• they are the same

Tags

NGSS.HS-PS1-3

Which example best describes a physical change?

• iron rusting
• charcoal burning
• an ice cube melting
• a marshmallow burning

Water is boiled and turns to vapor. The vapor is cooled and changes back into water. Which best describes what has occurred?

• a physical change, because the matter changed its state
• a chemical change, because the matter changed its state
• a physical change, because a new substance was formed
• a chemical change, because a new substance was formed

Which is an example of a chemical change?

• baking a cake
• freezing water
• crushing a can
• breaking an egg

Which best explains why burning wood is a chemical change?

• The process occurs quickly.
• The process can be reversed.
• The process can be repeated.
• The process creates a new substance.

Which of the following is an example of a chemical change?

• clouds forming

• sugar dissolving

• water freezing

• a candle wick burning