Counting Atoms

Front

What is the chemical formula for Sodium Chloride?

Back

NaCl

Front

How many atoms are in one molecule of H2SO4?

Back

7

Front

What are the reactants in the reaction: 2H2 + O2 -> 2H2O?

Back

2H2 + O2

Front

How many Hydrogen atoms are in 4H2O?

Back

8

Front

What is the product of the reaction: 2H2 + O2 -> ?

Back

2H2O

Front

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

Back

6

Front

What does the subscript in a chemical formula indicate?

Back

The number of atoms of the element in one molecule.

Front

What is the total number of atoms in the compound H2O?

Back

3 (2 Hydrogen + 1 Oxygen)

Front

In the formula H2SO4, what does 'SO4' represent?

Back

Sulfate ion, which contains 1 Sulfur and 4 Oxygen atoms.

Front

What is the significance of coefficients in a chemical equation?

Back

They indicate the number of molecules or moles of a substance.