Counting Atoms in Chemical Formulas Practice

Front

How many atoms are present if there is no subscript following the element symbol? (if there is no coefficient)

Back

only 1

Front

How many Nitrogen atoms are in (NH₄)₂CrO₄?

Back

2

Front

A ______ is a number written in front of a chemical formula.

Back

Coefficient

Front

When __________ form, the elements lose their individual chemical properties and take on new properties.

Back

compounds

Front

How many Oxygen atoms are in Al₂(SO₄)₃?

Back

12

Front

What does a subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the purpose of a coefficient in a chemical equation?

Back

To indicate the number of molecules or moles of a substance.

Front

In the formula C₆H₁₂O₆, how many Carbon atoms are there?

Back

6

Front

What is the total number of atoms in the formula Ca(OH)₂?

Back

5 (1 Calcium, 2 Oxygen, 2 Hydrogen)

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient indicates the number of molecules, while a subscript indicates the number of atoms in a molecule.