counting atoms, counting elements

Front

What is the chemical formula for water?

Back

H₂O

Front

How many atoms of Hydrogen are in one molecule of water (H₂O)?

Back

2

Front

How many atoms of Oxygen are in one molecule of water (H₂O)?

Back

1

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in one molecule.

Front

In the compound 4H₂O, how many total Hydrogen atoms are there?

Back

8

Front

In the compound 6NaCl, how many Sodium (Na) atoms are there?

Back

6

Front

What is a reactant in a chemical equation?

Back

A substance that undergoes a change during a chemical reaction.

Front

Which side of a chemical equation shows the products?

Back

Right (after the yields sign).

Front

What is the purpose of a chemical equation?

Back

To represent a chemical reaction using symbols and formulas.

Front

How many total atoms are in the compound 2H₂O?

Back

6 (4 Hydrogen + 2 Oxygen).