Atomic structure

Question 1

Compound used to investigate diffusion?

Answer 1

Potassium Manganate (VII)

Question 2

Mass and charge of a proton?

Answer 2

1 mass, +1 charge

Question 3

Mass and charge of a neutron?

Answer 3

1 mass, 0 charge

Question 4

Mass and charge of an electron?

Answer 4

1/2000 mass, -1 charge

Question 5

What is the mass number?

Answer 5

Top number - total of protons and neutrons

Question 6

What is the atomic number?

Answer 6

Bottom number - number of protons

Question 7

How many electrons are in an atom?

Answer 7

Number of electron equals number of protons

Question 8

What are molecules?

Answer 8

Groups of atoms

Question 9

What are elements?

Answer 9

Elements consist of one type of atom only

Question 10

What are compounds?

Answer 10

A substance that’s made of two or more different elements which are chemically bonded together

Question 11

What are mixtures?

Answer 11

A substance that’s made of two or more different elements which are NOT chemically bonded together

Question 12

What is filtration used for?

Answer 12

Separating an insoluble solid from a liquid

Question 13

What is crystallisation used for?

Answer 13

Separating a soluble solid from a solution

Question 14

What is simple distillation used for?

Answer 14

Separating a liquid from a solution

Question 15

What is fractional distillation used for?

Answer 15

Separating a mixture of liquids

Question 16

What is an isotope?

Answer 16

Atoms with the same atomic number but a different mass number

Question 17

What is relative atomic mass (Ar)?

Answer 17

The ratio of the average mass of an atoms compared to 1/12 of a carbon-12 atom