Top 1 - Atomic Structure and the Periodic Table

Question 1

What is the charge of a proton?

Answer 1

Postive

Question 2

What is the difference between a compound and a mixture?

Answer 2

A compound is a substance that contains two different elements and a mixture contains three or more.

Question 3

What technique of separation do you use:

To separate insoluble solids from liquids?

Answer 3

Filteration

Question 4

To separate soluble solids from solutions.

Answer 4

Either Evaporation or Crystallisation

Question 5

Which method of distillation do you use to separate liquids with similar boiling points?

Answer 5

Fractional Distillation

Question 6

What is the electronic structure of sodium?

Answer 6

2, 8, 1

Question 7

List some properties of noble gases. (Group 0)

Answer 7

The are colourless
Not very reactive (outer shells are full)
Down boiling points increase

Question 8

List some properties of halogens. (Group 7)

Answer 8

All non-metals
All colours vapours
As you go down its less reactive
Higher melting and boiling points
Higher relative atomic masses
All covalent when bonding
More reactive halogens displace less reactive ones.

Question 9

List some properties of Alkali Metals. (Group 1)

Answer 9

Soft Metals
Down - Increase reactivity as you go down the group
- Lower melting and boiling points
- Higher relative atomic masses
They form ionic compounds with non-metals

Question 10

What are isotopes?

Answer 10

Isotopes are different forms of the same element which have the same number of protons but a different number of neutrons.