Counting Atoms

Front

What do coefficients in chemical formulas do?

Back

Coefficients multiply EVERYTHING in the chemical formula.

Front

How many atoms of hydrogen are in H₂O?

Back

There are 2 atoms of hydrogen in H₂O.

Front

How many atoms of oxygen are in CO₂?

Back

There are 2 atoms of oxygen in CO₂.

Front

What does the subscript in a chemical formula indicate?

Back

The subscript indicates how many atoms of an element are present in a molecule.

Front

What is the term for the big number at the beginning of a chemical formula?

Back

The term is Coefficient.

Front

What is the chemical formula for water?

Back

The chemical formula for water is H₂O.

Front

What does a subscript of '2' next to an element symbol mean?

Back

It means there are 2 atoms of that element in the molecule.

Front

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

Back

There are 6 carbon atoms in C₆H₁₂O₆.

Front

If a chemical formula has no subscript, what does that imply?

Back

It implies there is only 1 atom of that element in the molecule.

Front

What is the difference between a coefficient and a subscript?

Back

A coefficient multiplies the entire molecule, while a subscript indicates the number of atoms of a specific element.