Elements and Compounds Review

Front

What is the correct chemical symbol for bromine?

Back

Br

Front

What is the smallest unit of an element that has all of the properties of that element?

Back

Atom

Front

How many different elements are in a compound?

Back

The number of different elements in a compound can vary; for example, in water (H2O), there are 2 different elements: hydrogen and oxygen.

Front

How many elements are represented in the compound Na2CO3?

Back

3 (Sodium, Carbon, and Oxygen)

Front

Which of the following is not a compound: HCl, Cl, NaCl, CO2?

Back

Cl is not a compound; it is an element.

Front

What is a compound?

Back

A compound is a substance formed when two or more elements are chemically bonded together.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that are not chemically bonded.

Front

What is the difference between an element and a compound?

Back

An element is a single type of atom, while a compound consists of two or more different types of atoms chemically bonded together.

Front

What is the chemical formula for water?

Back

H2O