Counting Atoms in Chemical Formulas Practice

Front

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

Back

2

Front

How many Magnesium atoms are in 10MgCl₂?

Back

10

Front

What is the atom count for H₂SO₄?

Back

H = 2, S = 1, O = 4

Front

What is the atom count for the compound 4C₂H₈O?

Back

C = 8, H = 32, O = 4

Front

What do coefficients in chemical formulas do?

Back

Multiply everything

Front

What is a subscript in a chemical formula?

Back

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

Front

What does the formula H₂O represent?

Back

Water, consisting of 2 Hydrogen atoms and 1 Oxygen atom.

Front

How do you determine the total number of atoms in a compound?

Back

Add the number of atoms of each element together.

Front

What is the atom count for the compound 3NaCl?

Back

Na = 3, Cl = 3

Front

What does a coefficient of 2 in front of a compound mean?

Back

It means there are two of that entire compound.