Counting Atoms in Chemical Formulas

Front

How many Sodium (Na) atoms are in the formula 6NaCl?

Back

6

Front

Which compound contains twice the amount of total atoms as C3H6O3?

Back

C6H12O6

Front

If there is no subscript in a chemical formula, how many atoms of that element are present?

Back

only 1

Front

What do the red numbers in a chemical formula represent?

Back

coefficients

Front

How many atoms of aluminum are in the formula 2Al2O3?

Back

4

Front

What is the total number of atoms in C6H12O6?

Back

24

Front

What is the difference between a subscript and a coefficient in a chemical formula?

Back

A subscript indicates the number of atoms of an element in a molecule, while a coefficient indicates the number of molecules.

Front

In the formula 3H2O, how many hydrogen atoms are there?

Back

6

Front

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

Back

There are 2 atoms of that element.

Front

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

Back

Add the number of atoms of each element, considering their subscripts.