C1

Question 1

What is the names of atoms that lose or gain electrons

Answer 1

Ions

Question 2

What is the name of atoms lose or gain neutrons

Answer 2

Isotopes

Question 3

What are mixtures

Answer 3

Mixtures are made of 2 or more substances that are NOT chemically combined

Question 4

What are the 3 ways mixtures can be separated

Answer 4

Filtration
Crystallisation
Distillation

Question 5

What equipment is used in filtration

Answer 5

Filter paper and a funnel, conical flask

Question 6

What equipment is used in crysallisation

Answer 6

Bunsen burner and evaporating dish

Question 7

What equipment is used in distillation

Answer 7

Flask, bunsen burner, heat proof mat, thermometer, condenser

Question 8

What is distillation used for?

Answer 8

Separating liquids and solids but then keeping the liquid and solid (such as a salt solution)

Question 9

What are Hydrogen’s three isotopes?

Answer 9

Protium
Deuterium
Tritium

Question 10

What is protium used in?

Answer 10

Hydrogen fuel cells
Production of plastics

Question 11

How much of hydrogen atoms are protium?

Answer 11

99.98%

Question 12

How many protons and neutrons does Protium have?

Answer 12

1 Proton 0 Neutrons

Question 13

How much of hydrogen is deutrium?

Answer 13

0.02%

Question 14

What is Deuterium used for?

Answer 14

Nuclear Fusion

Question 15

What is Tritium used for?

Answer 15

Thermonuclear fusion weapons

Question 16

Why are Noble gases used in light bulbs?

Answer 16

Because they do not react with the hot metal filament

Question 17

What change did Mendeleev make?

Answer 17

He left gaps in the Periodic table for undiscovered elements which made sure the discovered elements were in the right place

Question 18

How did Mendeleev order the elements?

Answer 18

By their relative atomic mass (RAM)

Question 19

What are Diatomic molecules?

Answer 19

Molecules made up of pairs of atoms
Eg Cl 2

Question 20

What are formed when metals and non-metals react?

Answer 20

Ionic compound
All ions have a full outer shell

Question 21

Properties of Noble gases

Answer 21

Colourless
Low density
Low boiling points
Inert
Monatomic

Question 22

Properties of halogens

Answer 22

Form salts
Get less reactive as you go down the group
Diatomic molecules

Question 23

What colour when Lithium reacts with oxygen

Answer 23

Burns with a red flame

Question 24

What happens when Lithium floats on water?

Answer 24

Hydrogen gas is released

Question 25

What colour does Sodium burn when reacted with oxygen

Answer 25

Yellow/Orange

Question 26

What happens when Sodium reacts with water?

Answer 26

Moves quickly across the surface of the water

Question 27

What happens to Potassium in water

Answer 27

It floats but is more aggressive in reacting than Sodium

Question 28

What colour flame does Potassium burn in oxygen?

Answer 28

Lilac flame

Question 29

What happens when Group 1 metals react with water?

Answer 29

The energy released is enough to melt the metals

Question 30

Properites of Transition metals

Answer 30

Higher density Lower reactivity Greater strength Higher melting points

Question 31

Where are Transition metals in the Periodic table?

Answer 31

In between Groups 2 and 3

Question 32

Other Transition metal properties

Answer 32

Can form ions with different positive charges Iron 2+ and Iron 3+

Question 33

Other Transition metal properties

Answer 33

Form different colour compounds Copper (I) is white and Copper (II) is blue

Question 34

Other Transition metal properties

Answer 34

Used as Catalysts Platinum are used in catalytic converters in cars

Question 35

Concentration =

Answer 35

No. Moles/volume

Question 36

To find Concentration of Acid or Alkali?

Answer 36

Titration