Counting Atoms in Chemical Formulas and Equations

Front

How many atoms of carbon (C) are in C6H12O6?

Back

6

Front

What does the number 4 represent in 4NH3?

Back

Coefficient

Front

What is the term for the number in front of reactants or products?

Back

Coefficient

Front

How many hydrogen atoms are in the reactant side of this equation? (2H2 + O2 -> 2H2O)

Back

4

Front

What does the arrow in a chemical equation represent?

Back

Yield

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 is a coefficient in a chemical equation?

Back

A number placed in front of a compound indicating how many molecules of that compound are present.

Front

In the formula C3H8, how many hydrogen atoms are there?

Back

8

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 molecule?

Back

Add the subscripts of all elements in the formula.