Chemical Formulas and Equations

Identify the molecules that represent the reactants in this chemical equation.

Tags

NGSS.MS-PS1-5

The following equation shows the combustion between methane and oxygen to produce carbon dioxide and water.

Select the products in the chemical equation.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The chemical formula for aluminum sulfate is Al₂(SO₄)₃. How many oxygen atoms can be found in ONE molecule of Aluminum Sulfate?

• 4
• 12
• 7
• 24

Tags

NGSS.MS-PS1-1

How many Hydrogen atoms can be found in 3 molecules of (NH₄)₂CrO₄.

• 4
• 2
• 8
• 24

Tags

NGSS.MS-PS1-1

How many atoms are there TOTAL in:
H₂SO₄

• 6
• 5
• 7
• 3

Tags

NGSS.MS-PS1-1

How many elements are in C₆H₁₂O₆?

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

The formula for table salt is NaCl. How many Sodium atoms are found in 6 molecules of table salt?

• 1
• 12
• 6

Tags

NGSS.MS-PS1-1

Ava is working in a chemistry lab and is given a sample of (NH₄)₂CrO₄. She needs to determine how many nitrogen (N) atoms are present in one formula unit of (NH₄)₂CrO₄. How many N atoms does she find?

• 1

• 2

• 8

• 16

Tags

NGSS.MS-PS1-1

A subscript is the small number below a(n) ​​ (a)   that tells the number of ​ (b)   of that element.

• element symbol
• atoms
• atomic mass
• molecules
• compound

Match the element to the number of atoms it has.

2 Al(C₂H₃O₄)₂

• 12

• carbon

• 2

• hydrogen

• 16

• oxygen

• 8

• aluminum

Tags

NGSS.MS-PS1-1