Counting Atoms

Front

What is the balanced equation for P4 + O2?

Back

1 P4 + 3 O2 -> 2 P2O3

Front

How many Hydrogen atoms are in 4H2O?

Back

8

Front

How many atoms of Hydrogen are in H2O?

Back

2

Front

What does it mean if there is no subscript following an element symbol?

Back

It means there is only 1 atom of that element.

Front

Is the equation Fe + S -> FeS balanced?

Back

YES!

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.

Front

How do you determine the number of atoms in a molecule?

Back

Count the subscripts for each element in the formula.

Front

What is the significance of balancing chemical equations?

Back

It ensures that the law of conservation of mass is followed.

Front

What is the formula for calculating the total number of atoms in a compound?

Back

Add the number of atoms of each element, multiplied by their respective subscripts.

Front

What does the term 'coefficient' refer to in a chemical equation?

Back

A number placed in front of a compound to indicate how many molecules are involved.