Mixture

Question 1

Mixtures can only be separated by a chemical change.

Answer 1

false

Question 2

Which of the following are mixtures?

Answer 2

air, sand and tea

Question 3

Pick the word that best completes the following sentence. A _______ mixture is a mixture in which the composition is uniform throughout the mixture.

Answer 3

homogeneous

Question 4

Salt water is a homogeneous mixture. Which of the following statements best explains why?

Answer 4

It is uniformly mixed, so it has an even composition throughout

Question 5

Which of the following statements about mixtures is FALSE?

Answer 5

1. they are all mixed uniformly and have an even composition throughout
2. Substances must combine in specific proportions

Question 6

Lemonade is a murky yellow color. If you leave it sitting for a few minutes, you might need to stir it again before you drink it. What type of mixture is lemonade?

Answer 6

suspension

Question 7

Butter is a mixture of proteins and fats that does not separate out when left alone. What type of mixture is butter?

Answer 7

colloid

Question 8

In carbonated water, when carbon dioxide bubbles are thoroughly mixed into the water, they become invisible. What type of mixture is carbonated water?

Answer 8

solution

Question 9

Which property is NOT used to separate a mixture?

Answer 9

ability to undergo a chemical reaction

Question 10

Soil is a heterogeneous mixture. Which of the following statements best explains why?

Answer 10

It is unevenly mixed, so it does not have the exact same composition throughout the mixture.