SCIENCE CHAPTER 2 STUDY GUIDE

Question 1

What is the definition of dissolve?

Answer 1

Mixing 2 types of matter together to form a solution.

Question 2

What is a solute?

Answer 2

The larger part of a solution OR the part of a solution in which the solvent dissolves into.

Question 3

What is a solvent?

Answer 3

The smaller part of a solution OR the part of the solution that dissolves into the solute.

Question 4

What does dissolving refer to?

Answer 4

Mixing completely from a solvent to a solution.

Question 5

Define pollution.

Answer 5

Contaminants in the environment that can harm living things.

Question 6

What does soluble mean?

Answer 6

Able to dissolve in a specified solvent.

Question 7

What does insoluble mean?

Answer 7

Unable to be dissolved in a specific solvent.

Question 8

What is a concentrated solution?

Answer 8

A solution with a large amount of solute particles in a given volume of solution.

Question 9

What is a dilute solution?

Answer 9

A solution with a small amount of solute particles in a given volume of solution.

Question 10

What is concentration?

Answer 10

The amount of solute in a solution.

Question 11

What does saturated mean in terms of solutions?

Answer 11

A solution in which no more solute can dissolve.

Question 12

What is an unsaturated solution?

Answer 12

A solution in which more solute can be dissolved.

Question 13

Define solubility.

Answer 13

Measuring how much solute can dissolve in a solution.

Question 14

What is the difference between solution, solvent, and solute?

Answer 14

A mixture that only looks like one element (solution) VS the smaller part of the solution that dissolves into the solute (solvent) VS the larger part of the solution that helps dissolve the solvent (solute).

Question 15

What is the difference between solid, liquid, and gas solutions?

Answer 15

Solid: has volume and a definite shape. Liquid: has volume and an indefinite shape. Gas: has indefinite volume and an indefinite shape.

Question 16

What are three ways to increase/decrease solubility?

Answer 16

• Raise/lower the temperature
• Stirring or letting it sit
• Particle sizes

Question 17

How do you calculate concentration?

Answer 17

Concentration = mass of solute in grams OVER 100mL of solution.

Question 18

How do you calculate solubility?

Answer 18

Solubility = Maximum mass of solute that will dissolve in grams OVER 100mL solvent at a certain temperature.

Question 19

What are three common solvents?

Answer 19

• Water
• Methanol
• Ethanol

Question 20

What are three common solutes?

Answer 20

• Salt
• Sugar
• Carbon dioxide

Question 21

True or False: A concentrated solution has fewer solute particles than a dilute solution.

Answer 21

False.

Question 22

What is the solvent in maple syrup?

Answer 22

Sap.

Question 23

What are some solutes in maple syrup?

Answer 23

• Sugar

Question 24

Is maple syrup or sap less concentrated and why?

Answer 24

Sap is less concentrated because it is runnier and clearer.

Question 25

What is the solubility of sugar in room temperature water?

Answer 25

204g/100mL.

Question 26

What is the solubility of salt in room temperature water?

Answer 26

36g/100mL.

Question 27

Calculate the concentration of 10g of sugar in 50mL of solution.

Answer 27

20g/100mL.

Question 28

What can a chef do to reduce the saltiness of soup?

Answer 28

Add more soup to dilute the salt.

Question 29

What is the space between particles in a solution?

Answer 29

The space between the particles is the area that allows movement and interaction.