Physical Change

Question 1

What are the three primary states of matter?

Answer 1

Solid, liquid, gas.

Question 2

True or False: A solid has a definite shape and volume.

Answer 2

True.

Question 3

Fill in the blank: A __________ is a homogeneous mixture of two or more substances.

Answer 3

solution

Question 4

What is a solvent?

Answer 4

A substance that dissolves a solute, forming a solution.

Question 5

What is solubility?

Answer 5

The ability of a substance to dissolve in a solvent at a specific temperature and pressure.

Question 6

Which state of matter has particles that are closely packed together and vibrate in place?

Answer 6

Solid.

Question 7

True or False: Gases have a definite volume but no definite shape.

Answer 7

False.

Question 8

What is the process of separating a solid from a liquid in a mixture called?

Answer 8

Filtration.

Question 9

What apparatus is commonly used for distillation?

Answer 9

Distillation flask.

Question 10

Which method would you use to separate a mixture of sand and salt?

Answer 10

Dissolve the salt in water and then filter out the sand.

Question 11

What is the difference between a solute and a solvent?

Answer 11

A solute is the substance being dissolved, while a solvent is the substance doing the dissolving.

Question 12

What is the term for the maximum amount of solute that can dissolve in a solvent at a given temperature?

Answer 12

Saturation point.

Question 13

True or False: All solids are soluble in liquids.

Answer 13

False.

Question 14

What is evaporation?

Answer 14

The process by which liquid turns into vapor.

Question 15

What is chromatography used for?

Answer 15

To separate components of a mixture based on their movement through a stationary phase.

Question 16

What is the term for a mixture in which the composition is uniform throughout?

Answer 16

Homogeneous mixture.

Question 17

Fill in the blank: The __________ of a solution is the amount of solute present in a given quantity of solvent.

Answer 17

concentration

Question 18

What are colloids?

Answer 18

Mixtures where tiny particles are dispersed in another substance but do not settle out.

Question 19

Which technique separates mixtures based on differences in boiling points?

Answer 19

Distillation.

Question 20

True or False: Solubility can change with temperature.

Answer 20

True.

Question 21

What is the purpose of a separating funnel?

Answer 21

To separate immiscible liquids based on density.

Question 22

What is a saturated solution?

Answer 22

A solution that contains the maximum amount of solute that can dissolve at a given temperature.

Question 23

What is the primary difference between a solution and a suspension?

Answer 23

In a solution, the solute is completely dissolved, while in a suspension, particles are not fully dissolved and can settle out.

Question 24

Fill in the blank: A __________ is a mixture where particles remain suspended and do not settle out.

Answer 24

colloid

Question 25

What do you call the process of separating a solid from a liquid by pouring off the liquid?

Answer 25

Decantation.

Question 26

What does the term 'miscible' refer to?

Answer 26

Two liquids that can mix together in any proportion without separating.

Question 27

What is the role of a catalyst in a chemical reaction?

Answer 27

To speed up the reaction without being consumed in the process.

Question 28

True or False: All gases are miscible with each other.

Answer 28

True.

Question 29

What is filtration primarily used for?

Answer 29

To separate solids from liquids or gases using a filter medium.

Question 30

What is the main component of a solution?

Answer 30

The solvent.

Question 31

What is the difference between an aqueous solution and a non-aqueous solution?

Answer 31

An aqueous solution uses water as the solvent, while a non-aqueous solution uses a different solvent.

Question 32

Fill in the blank: __________ is the process of heating a liquid to create vapor and then cooling the vapor to create a liquid.

Answer 32

Distillation