MOECULES

What do we call a chemical substance made up of 2 or more different types atoms bonded together?

• formula
• atom
• subscript
• compound

H₂O₂← ?
This number tells the number of atoms present.

• coefficient
• molecule
• subscript
• atom

→2H₂O
This number tells how many molecules are in a chemical equation.

• coefficient
• subscript
• compound
• element

2H₂O
How many Oxygen atoms are present?

• 2
• 4
• 1
• 5

2H₂O
How many H₂O molecules are present?

• 1
• 4
• 2
• 8

What are the basic building blocks for all matter?

• atoms
• elements
• compounds
• chemicals

The Atomic Number is the same as the number of:

• protons
• electrons
• protons and neutrons
• electron shells

Which of the models below represent a molecule? 

• A
• B
• C
• D

Which of the models below represent an atom? 

• A
• B
• C
• D

What does the atomic number represent?

• how many atoms are in a group.

• how much an atom weighs.

• the number of protons in the nucleus of the atom.