Counting Atoms and Elements

Front

What is the formula to determine the number of atoms in a compound?

Back

To find the total number of atoms in a compound, sum the coefficients multiplied by the subscripts of each element in the formula.

Front

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

Back

6

Front

How many Carbon (C) atoms are in 2Na₂CO₃?

Back

2

Front

How many Hydrogen (H) atoms are in 4H₂O?

Back

8

Front

How many different elements are present in C₆H₁₂O₆?

Back

3 (Carbon, Hydrogen, Oxygen)

Front

What is the total number of atoms in the formula H₂O₂?

Back

4

Front

Define a chemical formula.

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.

Front

What does a subscript in a chemical formula indicate?

Back

A subscript indicates the number of atoms of the element in one molecule of the compound.

Front

What does a coefficient in a chemical formula indicate?

Back

A coefficient indicates the number of molecules or formula units of the compound.

Front

How many Oxygen (O) atoms are in 3H₂O?

Back

3