CHEM I Test 3 Review

Front

What is rusting an example of?

Back

Rusting is an example of a chemical property.

Front

What is the electron configuration for Mg2+?

Back

The electron configuration for Mg2+ is 1s2 2s2 2p6.

Front

Which line segment represents only the solid state?

Back

The line segment A-B represents only the solid state.

Front

What type of substance is table salt (NaCl)?

Back

Table salt (NaCl) is a compound.

Front

Which of the following is NOT a sign of a chemical change?

Back

A change in state of matter is NOT a sign of a chemical change.

Front

Define a chemical property.

Back

A chemical property is a characteristic of a substance that can only be observed during a chemical reaction.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.

Front

What is the significance of electron configuration?

Back

Electron configuration determines how atoms interact and bond with each other.

Front

What are the signs of a chemical change?

Back

Signs of a chemical change include formation of a precipitate, unexpected color change, and unexpected temperature change.

Front

What is a precipitate?

Back

A precipitate is a solid that forms and settles out of a liquid mixture during a chemical reaction.