Molecules and Compounds

What is a molecule?

• two elements bonded together (sharing electrons)

• a mixture of different substances

• smallest individual particles

• salt mixed in water

Tags

NGSS.MS-PS1-1

What is a compound?

• Two different elements bonded together.

• Two of the same elements bonded together.

• A mixture of different substances.

• Two substances stuck together with glue.

Tags

NGSS.MS-PS1-1

___________ are completely different from the elements they are made of.

• compounds
• atoms
• elements
• ions

Tags

NGSS.MS-PS1-1

A molecule of H₂SO₄ contains how many atoms?

• 3

• 6

• 7

• 8

Tags

NGSS.MS-PS1-1

Which of the following IS a molecule but is NOT a compound?

• CO₂

• C

• O₂

• CO

Tags

NGSS.MS-PS1-1

The properties of a compound are always the same as the properties of the elements in the compound. 

• True
• False

The ______________in a formula tells the number of ATOMS of each element present.

• Compound

• Coefficient

• Subscript

• Molecule

Tags

NGSS.MS-PS1-1

In a chemical equation, the __________________ tells the number of MOLECULES in the reaction

• Subscript

• Coefficient

• Compound

• Molecule

Bonds between atoms in a molecule form as a result of the sharing or exchanging of:

• protons

• neutrons

• electrons

• toys

Tags

NGSS.MS-PS1-1

The formula HCl is considered:

• element

• molecule

• compound

• both compound and molecule

Tags

NGSS.MS-PS1-1