Q: Which of the following equations represents the separation of a mixture by filtration?

$$\text{Sand + Water} \xrightarrow{\text{filtration}} \text{Sand (residue) + Water (filtrate)}$$

Question 1

Maria is at the beach and gets sand in her water bottle. Her friend tells her not to worry, as she can separate the sand out easily. Which of the following describes why this mixture can be separated?

Accepted Answer

The properties of sand and water do not change when they are mixed, so they can be separated from each other without the substance changing.

Question 2

Jose is a scientist. He wants to identify whether a mixture is homogeneous or heterogeneous. While he is able to separate the elements of the substance, he is not able to see the elements on their own. Therefore, the mixture is homogeneous. Which of the following examples could be the mixture he is separating? (Choose TWO answers)

Accepted Answer

Chocolate

Question 3

Which of the following is an example of a homogeneous mixture?

Accepted Answer

Air, because it contains several gases, and they are uniform throughout.

Question 4

Which of the following best describes a heterogeneous mixture?

Accepted Answer

A mixture in which the individual components can be visually distinguished.

Question 5

A student mixes oil and vinegar to make a salad dressing. After a few minutes, the oil and vinegar separate into two layers. What type of mixture is this?

Accepted Answer

Heterogeneous mixture

Question 6

Which of the following methods would best separate a mixture of sand and water?

Accepted Answer

Filtration

Question 7

Which of the following statements is true about the components of a homogeneous mixture?

Accepted Answer

They are evenly distributed throughout the mixture.

Question 8

A scientist observes a mixture that appears uniform to the naked eye but can be separated into its components by physical means. Which type of mixture is this?

Accepted Answer

Homogeneous mixture

Question 9

Which of the following is NOT a method for separating the components of a mixture?

Accepted Answer

Electrolysis

Question 10

A bowl of cereal with milk is an example of which type of mixture?

Accepted Answer

Heterogeneous mixture

Question 11

Which of the following best explains why saltwater is considered a homogeneous mixture?

Accepted Answer

Salt and water are evenly mixed and cannot be visually distinguished.

Question 12

Which of the following mixtures can be separated by evaporation?

Accepted Answer

Saltwater

Question 13

Which of the following is a physical property that can be used to separate mixtures?

Accepted Answer

Boiling point

Question 14

A mixture of iron filings and sulfur can be separated by using a magnet. What type of mixture is this?

Accepted Answer

Heterogeneous mixture

Question 15

Which of the following best describes a solution?

Accepted Answer

A mixture in which the solute is evenly distributed within the solvent.

Question 16

Which of the following is an example of a physical change?

Accepted Answer

Dissolving sugar in water

Question 17

Which of the following equations represents the separation of a mixture by filtration?

Accepted Answer

$$	ext{Sand + Water} \xrightarrow{	ext{filtration}} 	ext{Sand (residue) + Water (filtrate)}$$

Question 18

Which of the following best describes why air is considered a homogeneous mixture?

Accepted Answer

The gases in air are evenly mixed and cannot be visually distinguished.

Question 19

Which of the following is a correct statement about mixtures?

Accepted Answer

Mixtures retain the properties of their individual components.

Question 20

A student observes a cloudy liquid that settles into two layers after standing. Which type of mixture is this?

Accepted Answer

Heterogeneous mixture

Mixtures: Homogeneous vs. Heterogeneous – GOB Chemistry Study Guidance

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