Testing, Mixtures and Separation

Question 1

What is a Compound?

Answer 1

A substance that is chemically combined

Question 2

What is a Mixture?

Answer 2

A substance that is physically combined

Question 3

Dissolve

Answer 3

Mixes into the water, or another solvent, forming a solution

Question 4

Solution

Answer 4

A mixture in which the particles of the different substances cannot be seen, and cannot be separated by filtration

Question 5

Solvent

Answer 5

A liquid that dissolves a solute

Question 6

Solute

Answer 6

the dissolved substance in a solution

Question 7

Dilute

Answer 7

A small amount of solute in a large amount of solvent

Question 8

Concentrated

Answer 8

A large amount of solute in a small amount of solvent

Question 9

Dilution

Answer 9

Adding more Solvent to a set amount of solute (Making a solution more liquidy or runny)

Question 10

Saturation

Answer 10

Saturated refers to a point of maximum concentration, in which no more solute may be dissolved in a solvent.

Question 11

Magnetic Separation

Answer 11

Metals are attracted by magnets

Question 12

Filtration Separation

Answer 12

Separating a liquid from a dissolved solid

Question 13

Describe how evaporation worlks in a scientific experiment

Answer 13

Evaporation is used to separate a dissolvable solid from a liquid

Question 14

What substance is removed during evaporation?

Answer 14

The solvent is removed, leaving the soluble solid

Question 15

Distillation separation

Answer 15

Distillation can be used to separate a soluble substance from water when we want to retain the water

Question 16

What Physical property does distillation use for separating substances?

Answer 16

Distillation uses the chemical property of different evaporation points

Question 17

Chromatography Separation

Answer 17

As the solute soaks up the paper, it carries the mixtures with it. Different components of the solution will move at different rates.

Question 18

What is the physical properties of Hydrogen?

Answer 18

Odorless, Colourless

Question 19

What is the physical properties Oxygen?

Answer 19

Odorless, Colourless

Question 20

What is the physical properties of Carbon Dioxide?

Answer 20

Odorless, Colourless

Question 21

How is Hydrogen gas produced in the lab?

Answer 21

Hydrogen and only zinc reaction

Question 22

How is Oxygen produced in the lab?

Answer 22

hydrogen peroxide OR water and oxygen

Question 23

How is Carbon Dioxide produced in the lab?

Answer 23

Acid and Carbonate

Question 24

How do you test for Hydrogen Gas?

Answer 24

Light a matchstick in a test tube

Question 25

How do you test for Oxygen Gas?

Answer 25

Get a glowing splint and put it in the substance that has hydrogen peroxide

Question 26

How do you test for Carbon Dioxide?

Answer 26

Lime water solution (Hydroxide solution)

Question 27

What is the result of a positive test for Hydrogen?

Answer 27

Will hear squeaky pop

Question 28

What is the positive result of a positive test for Oxygen?

Answer 28

The matchstick will glow and make a flame

Question 29

What is the positive result for Carbon Dioxide?

Answer 29

Turns cloudy or milky