Elements, Compounds, and Mixtures

A pure substance...

• is an element or a compound
• is an element or a mixture
• is a compound or a mixture
• is a mixture

Tags

NGSS.MS-PS1-1

A substance made up of two or more chemically combined elements is —

• an element

• mixture

• compound

• solution

This diagram represents a _____.

• Pure substance that is a compound

• Mixture of elements

• Pure substance that is an element

• Mixture of compounds

Tags

NGSS.MS-PS1-1

Which of the following represents an element?

• H₂O
• H₂
• NaCl
• CaCO₃

Sweet tea is a mixture where everything is mixed evenly and looks the same.

• Heterogeneous Mixture

• Homogeneous Mixture

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

• compound
• element
• heterogeneous mixture
• homogeneous mixture

Which of these is a pure substance?

• Bread

• Table salt

• Garden soil

• Sea water

A mixture that appears to be evenly mixed throughout:

• an atom
• a compound
• a homogeneous mixture
• a heterogeneous mixture

What do we call a composition that is not uniform throughout?

• Homogeneous mixture

• Heterogeneous mixture

What is sugar water?

• A solution

• A suspension

• A colloid