Final Review (Part 1)

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Carbon Dioxide has a chemical formula of CO₂.  Carbon Dioxide is a(n):

• Compound
• Element
• Mixture

Tags

NGSS.MS-PS1-1

NaCl + H₂0 (salt water) is a(n):

• element

• compound

• mixture

Which type of property is boiling point?

• physical property

• chemical property

Example for physical property

• density

• burns in air

• reacts with water to create hydrogen gas

• rust

Tags

NGSS.MS-PS3-4

Which of the following is NOT an example of a physical change?

• crumpled paper

• pencil sharpening

• shrunken clothing

• rusted metal

Baking a cake is an example of chemical change.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Flammability is an example of what property?

• Chemical property
• Physical property

Physical properties are

• properties that can be observed without changing the identity of the substance
• properties that describe how a substance changes into a completely different substance

A substance dissolving in water is an example of a:

• physical change

• chemical change