Counting Atoms Practice 2

Front

What is the product of the reaction 2H₂ + O₂?

Back

2H₂O

Front

What does the coefficient in a chemical formula tell you?

Back

How many molecules are present

Front

Where are coefficients found in chemical formulas?

Back

At the beginning of a formula and they multiply EVERYTHING!

Front

How many Aluminum atoms are in Al₂O₃?

Back

2

Front

What does the subscript in a chemical formula tell you?

Back

How many atoms are present

Front

What is a chemical formula?

Back

A way to represent a chemical substance using symbols for its elements.

Front

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

Back

The substances that undergo a chemical change.

Front

What is the significance of balancing a chemical equation?

Back

To ensure that the number of atoms for each element is the same on both sides of the equation.

Front

What is the difference between a coefficient and a subscript?

Back

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

Front

How many oxygen atoms are in 2H₂O?

Back

2