Elements, Compounds & Mixtures

Salt water boils and the water completely evaporates, salt (NaCl) is left in the bottom of the beaker. Which of the following is left in the beaker?

• Compound
• Element
• Mixture
• None of the Above

Tags

NGSS.MS-PS1-4

Water is an example of:

• compound
• element
• solution

Tags

NGSS.MS-PS1-1

Mixtures are separated through ___________changes.

• mixture
• compound
• physical

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

This picture represents which of the following?

• element
• compound
• mixture

Tags

NGSS.MS-PS1-1

These contain only one kind of atom. 

• element 
• compound 
• mixture 
• water 

Tags

NGSS.MS-PS1-1

The air is a _________. 

• element 
• mixture 
• compound 
• energy 

Tags

NGSS.MS-PS1-1

Elements can be broken down into simpler substances. 

• false 
• true 
• sometimes 

Tags

NGSS.MS-PS1-5

These must be separated chemically. 

• elements 
• compounds 
• mixtures 
• homogeneous mixtures