Chemistry- Mixing 2

Question 1

What is the atomic number?

Answer 1

The number of protons and electrons in an atom

Question 2

What is an atom?

Answer 2

The smallest particle of an element

Question 3

What is chromatography?

Answer 3

A separation technique used to seperate soluble particles based on their size

Question 4

What is a compound?

Answer 4

A pure substance made up of two or more elements joined together in a certain ratio

Question 5

What is the difference between a diluted, concentrated and saturated substance?

Answer 5

A diluted substance is solvent with a little solute dissolved in it. A concentrated substance is solvent with lots of solute in it and a saturated substance is a solution that cannot dissolve any more solute.

Question 6

What is distillation?

Answer 6

A separation technique to separate two liquids based on their boiling point.

Question 7

What is an element?

Answer 7

A pure substance that is only made up of one type of atom

Question 8

What is evaporation?

Answer 8

A separation technique to seperate a soluble solid from a solution.

Question 9

What is filtering/filtration?

Answer 9

A separation technique to seperate an insoluble solid from a liquid

Question 10

What is the difference between a pure and impure substance?

Answer 10

A pure substance is made up of only one particle, while an impure substance is made up of more than one type of particle (and isn’t chemically joined)

Question 11

Define insoluble

Answer 11

Does not dissolve

Question 12

Define soluble

Answer 12

Can dissolve

Question 13

What is the mass number?

Answer 13

The number of protons and neutrons in an atoms nucleus

Question 14

What is a mixture?

Answer 14

An impure substance made up of different substances that can be easily separated.

Question 15

Define solute

Answer 15

The substance that dissolves

Question 16

Define solution

Answer 16

The mixture of a solute and solvent

Question 17

Define solvent

Answer 17

The liquid that does the dissolving

Question 18

What is a subatomic particle?

Answer 18

Protons, neutrons and electrons that make up an atom

Question 19

Where is the proton and what charge does it have?

Answer 19

The proton is in the nucleus. It has a positive charge.

Question 20

Where is the neutron and what charge does it have?

Answer 20

The neutron is in the nucleus. It has a neutral charge.

Question 21

Where is the electron and what charge does it have?

Answer 21

The electron orbits around the nucleus. It has a negative charge.

Question 22

How many electrons can fit in the first electron shell?

Answer 22

2

Question 23

How many electrons can fit in the second and third electron shell?

Answer 23

8

Question 24

Why are atoms neutral overall?

Answer 24

The positively charged protons are the same amount as the negatively charged electrons and therefore balance themselves out. P=E

Question 25

What are some examples of a mixture?

Answer 25

Saltwater, juice, sand

Question 26

What are some examples of a compound?

Answer 26

Water, salt, sugar

Question 27

What are some examples of an element?

Answer 27

Gold, silver, helium, oxygen