C1- Atomic Structure

Question 1

How many types of atoms do elements contain?

Answer 1

Only 1

Question 2

How many types of atoms do compounds contain?

Answer 2

More than 1

Question 3

What are the reactants in a chemical reaction?

Answer 3

The substances you start with

Question 4

What are the products in a chemical reaction?

Answer 4

The new substances made

Question 5

Whats the state symbol for a solid?

Answer 5

(s)

Question 6

Whats the state symbol for a liquid?

Answer 6

(L)

Question 7

Whats the state symbol for a gas?

Answer 7

(g)

Question 8

Whats the state symbol for an aqueous solution?

Answer 8

(aq)

Question 9

Compounds

Answer 9

Two or more substances chemically bonded

Question 10

Mixtures

Answer 10

Two or more substances that are not chemically bonded

Question 11

Whats the composition of compounds like?

Answer 11

Fixed

Question 12

Whats the composition of mixtures like?

Answer 12

Not fixed

Question 13

How are compounds separated?

Answer 13

Chemical chemical reactions

Question 14

Describe the bonds a compound

Answer 14

There are chemical bonds between the atoms of the different elements

Question 15

Describe the chemical bonds in a mixture

Answer 15

There are no chemical bonds

Question 16

Name 3 different methods of separating mixtures

Answer 16

• filtration
• crystallisation
• fractional distillation
• simple distillation
• chromatography

Question 17

Why is the separation of mixtures using fractional/simple distillation possible?

Answer 17

Because of the different boiling points fo the liquids in the mixture

Question 18

Why is the separation of mixtures using chromatography possible?

Answer 18

Because of (the substances) their different solubilities in the solvent used

Question 19

Solvent

Answer 19

A solvent is the component of a solution that is present in the greatest amount. It is the substance in which the solute is dissolved. Examples: ​ The solvent for seawater is water

Question 20

Solute

Answer 20

A solute is defined as the substance that is dissolved in a solution

Question 21

Plum pudding model

Answer 21

A ball of positive charge with electrons stuck in the.m

Question 22

Who discovered electrons and the plum pudding model?

Answer 22

JJ Thomson

Question 23

What did Rutherford discover about the structures if the atom after the alpha scattering experiment?

Answer 23

That the nucleus had a positive charge

Question 24

What did James chadwick discover about the structure of the atom?

Answer 24

That the nucleus also contained neutral particles which we call neutrons