M15 Classification of Matter Test Review (PS)

A ___ is a heterogeneous mixture that never settles.

• Colloid

• Suspension

• Compound

• Solution

A substance is ___

• Either an element or a compound

• A mixture of compounds

• Always a compound

• Always an element

A(n) ___ is a material made up of two or more substances that can be separated by physical means.

• Mixture

• Compound

• Element

• Substance

Which of the following is an example of physical weathering?

• Flowing water carves erosion channels in a hillside.

• Calcium carbonate in limestone changes to calcium hydrogen carbonate.

• Stalactites precipitate in a cave.

• Acid rain corrodes a monument.

Which of the following is a chemical change?

• Gas burns in an engine

• Water expands as it freezes

• Sugar dissolves in a cup of water

• Glass bends as it is heated

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A mixture in which different materials can be distinguished easily is called a ___ mixture.

• Homogeneous

• Heterogeneous

• Colloid

• Suspension

A change of one substance to another is a ___ change.

• Physical

• Chemical

• Spontaneous

• Accidental

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the difference between a homogeneous mixture and a heterogeneous mixture?

• A homogeneous mixture has a uniform composition throughout, while a heterogeneous mixture has a non-uniform composition.

• A homogeneous mixture is always a liquid, while a heterogeneous mixture is always a solid.

• A homogeneous mixture contains only one substance, while a heterogeneous mixture contains multiple substances.

• A homogeneous mixture can be separated by physical means, while a heterogeneous mixture cannot.

The words “Shake well before using” indicate that the fruit juice in a carton is a suspension because:

• The juice is a homogeneous mixture.

• The juice contains particles that settle over time.

• The juice is a solution.

• The juice is carbonated.

What is the difference between a chemical and physical property?

• Chemical properties involve changes in the substance's chemical identity, while physical properties do not.

• Physical properties involve changes in the substance's chemical identity, while chemical properties do not.

• Both chemical and physical properties involve changes in the substance's chemical identity.

• Neither chemical nor physical properties involve changes in the substance's chemical identity.