Pure Substances and Mixtures

___________ are the smallest unit of an element that maintains the properties of that element.

• Atoms

• Elements

• Compounds

• Mixtures

Tags

NGSS.MS-PS1-1

A _________________ mixture is one where the substances are evenly spread throughout.

• heterogeneous

• homogeneous

• pure substance

Fruit Loops, pizza, and Skittles are examples of ____________________ mixtures.

• heterogeneous

• homogeneous

• pure

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

• heterogeneous

• homogeneous

• pure

Which of these is an element?

• Salt (NaCl)

• Water (H20)

• Oxygen (O)

• Carbon Dioxide (CO2)

Which of these is a compound?

• Aluminium (Al)

• Carbon Dioxide (CO2)

• Nitrogen (N)

• Sand

Tags

NGSS.MS-PS1-1

What do protons, electrons and neutrons make?

• element

• compound

• atom

Tags

NGSS.MS-PS1-1

What is the smallest piece of matter that still has properties of that matter?

• element

• atom

• proton

Negatively charged particle

• proton

• neutron

• electron

Tags

NGSS.MS-PS2-3

Neutral charge particle

• proton

• neutron

• electron