Counting Atoms

Front

What is the chemical formula for sodium carbonate?

Back

Na₂CO₃

Front

How many elements are in the compound C₂H₈O?

Back

3

Front

What is the total number of atoms in the compound C₂H₈O?

Back

11

Front

How many sodium (Na) atoms are in 6NaCl?

Back

6

Front

How many chlorine (Cl) atoms are in MgCl₂?

Back

2

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in the molecule.

Front

What is the total number of atoms in the compound Na₂CO₃?

Back

5 (2 Na + 1 C + 3 O)

Front

How do you determine the number of carbon (C) atoms in a compound?

Back

Look for the subscript next to C in the chemical formula.

Front

What is the significance of the coefficients in a chemical formula?

Back

They indicate the number of molecules or formula units.

Front

How many oxygen (O) atoms are in the compound C₂H₈O?

Back

1