What is a mixture?

• A chemical combination of two or more different substances.
• A physical combination of two or more different substances.
• A chemically pure substance.
• A special type of solution

Which of the following is NOT an example of a mixture?

• air
• blood
• gasoline 
• freshwater

Tags

NGSS.MS-PS1-2

What type of mixture is uniform in composition?

• A chemical mixture
• A homogeneous mixture
• A heterogeneous
• A compound

What is a solution?

• A type of homogeneous mixture
• A type of heterogeneous mixture
• A type of suspension
• A type of colloid

Tags

NGSS.MS-PS1-1

The substance that "does the dissolving" in a solution is called:

• The solvent
• The solute
• The salt
• The suspension

Solubility is a measure of:

• The concentration of a homogeneous mixture
• The concentration of a heterogeneous mixture
• How easily a substance dissolves into another substance
• How easily a substance will dissolve a substance

Tags

NGSS.MS-PS1-2

What substance is often called the "universal solvent"?

• water
• ethanol 
• salt 
• blood

An alloy is:

• A heterogeneous mixture of a metal and nonmetal
• A heterogeneous mixture of two or more metals
• A homogeneous mixture of two or more nonmetals 
• A homogeneous mixture of two metals or a metal and nonmetals

What is a colloid?

• A special type of solution
• A homogeneous mixture of  particles that can  be seen distributed in a substance   
• A heterogeneous mixture, in which the particles eventually settle out of a substance
• A heterogeneous mixture of very small particles (too small to be seen) distributed throughout another substance

What type of mixture can you separate back into its original components?

• A solution
• A heterogeneous mixture
• A suspension
•  All of the above