Only liquid materials can make mixtures. 

• True
• False

How do you know when you have a solution?

• When the liquid becomes cloudy.
• When the solid material dissolves  in the liquid. 
• When the solid material sinks to the bottom. 
• When the solid material floats on the top of the liquid. 

Tags

NGSS.MS-PS1-2

Mixtures can be separated by hand, filters, and screens.

• True

• False

How can you separate solutions? 

• Evaporation
• By hand
• Filters
• Screens

When a solution evaporates, it leaves the dissolved solid material behind.

• True
• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Is water a solvent or a solute?

• Solute
• Solvent

Saturation is reached when the solute (salt) no longer dissolves in the solvent (water).

• True
• False

Tags

NGSS.MS-PS1-2

Salt is more soluble than citric acid. 

• True
• False

Tags

NGSS.MS-PS1-2

How can you dilute a concentrated solution?

• Add more solid material.
• Evaporation.
• Add more liquid. 
• Filter the solution.

How can you tell a solution is more concentrated than another?

• The solution weighs more. 
• The solution weighs less.
• The solution is clear. 
• The solution has a lighter color. 

Tags

NGSS.MS-PS1-2