Unit 2 Review

Which of the following are pure substances?

• solutions

• compounds

• homogeneous mixtures

• colloids

A substance that is made up of only one kind of atom is a(an)

• Compound

• Solution

• Element

• Homogeneous Mixture

What is the symbol for aluminum?

• Al

• al

• AL

• A

If a material contains three elements joined in a fixed proportion, it is a(an)

• Mixture

• Solution

• Atom

• Compound

Which of the following is a mixture?

• Carbon Dioxide

• Silicon

• Silicon Dioxide

• Sand

Which of the following is malleable?

• Glass

• Ice

• Pottery

• Gold

A substance has a melting point of 0°C and a boiling point of 100°C.

• Water

• Hydrogen

• Gold

• Table Salt

Tags

NGSS.MS-PS1-4

What physical properties of nylon and leather make them good materials to use for shoelaces?

• high density and low conductivity

• durability and flexibility

• hardness and durability

• low viscosity and flexibility

Filtration can be used to separate mixtures based on...

• their boiling points.

• their densities.

• their melting points.

• the size of their particles.

When a physical change occurs in a sample of matter which of the following does NOT change?

• shape

• mass

• volume

• composition