Physical Science Unit 2 Matter Review

What are the main two types of mixtures?

• Solutions and colloids
• Solutions and homogeneous
• Heterogeneous and homogeneous
• Suspensions and homogeneous

Matter that always has exactly the same composition is classified as a(n)

• mixture
• compound
• element
• pure substance

Tap water is a

• compound.
• element.
• solution.
• suspension.

A heterogeneous mixture that separates into layers over time is a(n)

• solution
• suspension
• colloid
• simply a mixture; there's no specific name for this.

What does the composition of compounds look like?

• Compounds contain two or more elements bonded together in a fixed ratio.
• Compounds only contain one type of atom.
• Compounds contain three or more elements bonded together in a fixed ratio.
• Compounds contain multiple types of substances.

Tags

NGSS.MS-PS1-1

Identify the physical properties.

• Melting point
• Viscosity
• Shape
• Volume
• Reactivity

The ability of a solid to be hammered into a sheet without shattering is called

• Conductivity
• Malleability
• Ductility
• Strength

When we say that a liquid is thin, does it have a high viscosity or a low viscosity?

• High viscosity
• Low viscosity

Why is changing the state of a sample considered a physical change?

• The composition of the sample does change.
• The composition of the sample does not change.
• The properties of the sample do not change.
• The change can be reversed.

Bromine is a liquid at room temperature, and oxygen is a gas at room temperature. Which has the lower boiling point?

• Bromine
• Oxygen
• Both have the same boiling point.

Tags

NGSS.MS-PS1-4