Pure Substances and Mixtures Review

Which image(s) would be considered pure substances?

• V

• I and II

• II and IV

• III and V

Tags

NGSS.MS-PS1-1

A student made a snack after school by combining pretzels, peanuts, and raisins together in a bowl. What statement describes the student’s snack?

• It is a heterogeneous mixture

• It is a homogeneous mixture

• 
  It is a pure substance

• It is a compound

Which of the following models represents a pure substance?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Taylor was thirsty and decided to mix up a pitcher of lemonade. She put lemon juice, water, and sugar into a pitcher and stirred it to create this wonderful new drink. How could Taylor decide if she just created a mixture or a compound?

• it must be a compound because it all looks the same

• 
  if it were a compound, there would have been an explosion

• it must be a mixture as she can separate all of the individual ingredients

• 
  it must be a compound as she can separate all of the individual ingredients

Pure substances can be ​ (a)   and

mixtures can be ​ (b)  

• elements or compounds

• elements and homogeneous mixtures

• compounds and homogeneous mixtures

• elements and heterogeneous mixtures

• compounds and heterogenous mixtures

• homogeneous and heterogenous.

Which of the following is an example of a pure substance?

• Air

• Saltwater

• Gold

• Milk

Tags

NGSS.MS-PS1-1

A student draws four models to represent the different types of pure substances and mixtures.  Move the descriptions into the table to correctly identify each model.  Descriptions may be used more than once.

 

• identify as: Element, Compound, homogeneous mixture, or heterogeneous mixture.

b

c

d

a

Compound

Heterogenous Mixture

Homogenous Mixture

Element

Tags

NGSS.MS-PS1-1

Ms. Powers made Kool-Aid for her classes. The sugar and powder mixture was the​ (a)   . The water was the ​ (b)   . The Kool-Aid was the ​ (c)  

• solute

• solvent

• solution

• equation

• salt

• solve

Milk

• Solution

• Suspension

• Colloid

 Bronze 

•  Homogeneous 

•  Heterogeneous 

•  Element 

•  Compound