Chemistry Mid Topic Test

Question 1

Define mixture?

Answer 1

2 or more pure substances mixed together

Question 2

Define pure substance?

Answer 2

A substance that is made up of one type of molecule

Question 3

Define solution?

Answer 3

When a substance mixes really well, a solution is created

Question 4

Define Solute?

Answer 4

A substance that dissolves in another

Question 5

Define Solvent?

Answer 5

A substance that defines a solutions physical form

Question 6

Define Concentration?

Answer 6

The meaasurement of a dissolved solute

Question 7

Define Dilute?

Answer 7

A substance that is weak

Question 8

Define Saturated?

Answer 8

Holding as much moisture as can be absorbed

Question 9

Define Heterogeneous mixture?

Answer 9

A mixture of different things that you cannot see

Question 10

Define Homogeneous mixture?

Answer 10

A mixture of same things with parts that you can see

Question 11

What is the difference between a solvent and a solute?

Answer 11

The solvent is the material that decides the solutions ending form (solid, liquid and gas). The solute is that product that the solvent dissolves in.

Question 12

What is the solvent in cordial?

Answer 12

water

Question 13

What is the solute in seawater?

Answer 13

Salt

Question 14

Name 5 solutions

Answer 14

Sports drink, tea, pancake syrup, soda, bronze

Question 15

Define Observation

Answer 15

Closely looking at or observing something

Question 16

Define Inference

Answer 16

A conclusion based on an observation
An educated guess

Question 17

List 5 pieces of lab equipment

Answer 17

Beaker, Conical Flask, Pipette, Measuring Cylinder, Test tube.

Question 18

What is a beaker used for?

Answer 18

Heating or cooling a liquid

Question 19

What is a pipette used for?

Answer 19

Transferring a liquid volume

Question 20

What is a measuring cylinder used for?

Answer 20

Measuring volumes of a liquid

Question 21

What is a conical flask used for?

Answer 21

Mixing a liquid

Question 22

What is a Test tube used for?

Answer 22

Handling chemicals

Question 23

Name 5 mixtures

Answer 23

Seawater, Cordial, flour and water, sand and water, gasoline

Question 24

Name 3 rules of lab safety

Answer 24

1. Never drink anything.
2. Stand back when an experiment is in progress.
3. always wear lab safety clothing/gear.