Identifying Elements and Compounds

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together. It has properties different from the individual elements.

Front

How many elements are in the compound NaHCO₃ (Baking Soda)?

Back

4

Front

How many elements are in the compound CaCO₃ (Chalk)?

Back

3

Front

What is the chemical formula for sulfuric acid?

Back

H₂SO₄

Front

How many elements are in sulfuric acid (H₂SO₄)?

Back

3

Front

What is the chemical formula for zinc nitrate?

Back

Zn(NO₃)₂

Front

How many elements are in the chemical formula Zn(NO₃)₂?

Back

3

Front

What distinguishes a compound from an element?

Back

Compounds are made of at least two types of atoms, while elements consist of only one type of atom.

Front

What is the smallest unit of a compound?

Back

The smallest unit of a compound is a molecule.