Unit 2 Re-Test

Front

What is a sign that a chemical reaction has occurred?

Back

Formation of a gas is a sign that a chemical reaction has occurred.

Front

What is the ability of a substance to reflect light called?

Back

Luster is the ability of a substance to reflect light.

Front

What does Column A describe in a chart comparing elements?

Back

Column A describes metals.

Front

What type of element is Silicon?

Back

Silicon is a metalloid.

Front

What type of element is Iron?

Back

Iron is a metal.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What are the three main types of elements?

Back

The three main types of elements are metals, nonmetals, and metalloids.

Front

What property makes metals good conductors of electricity?

Back

Metals have free electrons that allow them to conduct electricity.

Front

What is ductility?

Back

Ductility is the ability of a substance to be stretched into a wire.

Front

What is malleability?

Back

Malleability is the ability of a substance to be hammered or pressed into thin sheets.