Elements, Compounds & Mixtures

Carbon and oxygen atoms can combine to form the gas called carbon dioxide.

• is a molecule, so it no longer has atoms
• is a molecule made of atoms
• has atoms, so it is not a molecule
• is a new kind of atom

Tags

NGSS.MS-PS1-1

The basic unit of matter is

• a mixture
• a substance
• an atom
• a compound

Tags

NGSS.MS-PS1-1

A substance that contains only one type of atom is a(n)

• compound
• element
• heterogeneous mixture
• homogeneous mixture

The smallest unit of an element that still has the properties of that element is?

• a substance
• a mixture
• a compound
• an atom

Tags

NGSS.MS-PS1-1

Which of these is a pure substance?

• bread
• table salt
• garden soil
• sea water

Tags

NGSS.MS-PS1-4

Which of these is an example of a molecule?

• a small nugget of pure gold
• the smallest grain of salt in a salt shaker
•  a small drop of sugar water
• two oxygen atoms joined to a carbon atom

Tags

NGSS.MS-PS1-1

Which of these is not an example of a molecule?

• CH4
• C
• C6H12O6
• H2O

Tags

NGSS.MS-PS1-1

Which of these is a mixture?

• Uncooked chocolate chips and cookie dough blended together with a spoon.
• Distilled water
• A nugget of gold
• A molecule of Oxygen

Atoms of an element always have a certain number of

• neutrons
• protons
• electrons
• ions

Tags

NGSS.MS-PS1-1

The smallest unit of a compound that still has the properties of that compound is?

• an atom
• a molecule
• a mixture
• a substance

Tags

NGSS.MS-PS1-1