Counting atoms

Front

What is the chemical formula for a compound containing 4 carbon atoms, 8 fluorine atoms, and 8 chlorine atoms?

Back

4CF2Cl2

Front

How many different elements are present in the compound H2COCH2?

Back

3

Front

What is a number written in front of a chemical formula called?

Back

Coefficient

Front

What are the numbers found on the lower right-hand side of an element symbol called?

Back

Subscript

Front

How many oxygen atoms are in the compound Al(OH)3?

Back

3

Front

What does a subscript indicate in a chemical formula?

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 hydrogen atoms are present?

Back

12

Front

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

Back

5 (1 Calcium, 2 Oxygen, 2 Hydrogen)

Front

How do you determine the number of atoms of an element in a compound with parentheses?

Back

Multiply the subscript outside the parentheses by the subscripts of the elements inside.