Counting Atoms REVIEW

Front

How many O's are in Al₂(SO₄)₃?

Back

12

Front

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

Back

Coefficient

Front

How many Sulfur's are in Al₂(SO₄)₃?

Back

3

Front

How many Nitrogen atoms are in H₃C₂ON₅?

Back

5

Front

How many atoms of Oxygen are in Fe(NO₃)₃?

Back

9

Front

What is a subscript in a chemical formula?

Back

A number written below and to the right of a chemical symbol indicating the number of atoms of that element in a molecule.

Front

What does the coefficient in a chemical equation represent?

Back

The number of molecules or moles of a substance.

Front

In the compound C₆H₁₂O₆, how many Carbon atoms are present?

Back

6

Front

What is the total number of atoms in the molecule H₂O?

Back

3 (2 Hydrogen + 1 Oxygen)

Front

How many total atoms are in the formula Ca(OH)₂?

Back

3 (1 Calcium + 2 Oxygen + 2 Hydrogen)