Chemistry 2 Year 10

Question 1

Copper

Answer 1

Cu2+

Question 2

Iron

Answer 2

Mostly Fe2+

Question 3

Lead

Answer 3

Mostly Pb2+

Question 4

Nickel

Answer 4

Mostly Ni2+

Question 5

Rubidium

Answer 5

Rb+

Question 6

Caesium

Answer 6

Cs+

Question 7

Zinc

Answer 7

Zn2+

Question 8

Cobalt

Answer 8

Mostly Co2+

Question 9

Manganese

Answer 9

Mn2+

Question 10

Strontium

Answer 10

Sr2+

Question 11

Aluminium

Answer 11

Al3+

Question 12

Chromium

Answer 12

Mostly Cr3+

Question 13

Hydrogen carbonate

Answer 13

HCO3-

Question 14

Hydroxide

Answer 14

OH-

Question 15

Nitrate

Answer 15

NO3-

Question 16

Acetate

Answer 16

CH3COO-

Question 17

Hydrogensulfate

Answer 17

HSO4-

Question 18

Nitrite

Answer 18

NO2-

Question 19

Dihydrogenphosphate

Answer 19

H2PO4-

Question 20

Carbonate

Answer 20

CO3 2-

Question 21

Sulfate

Answer 21

SO4 2-

Question 22

Sulfite

Answer 22

SO3 2-

Question 23

Hydrogenphosphate

Answer 23

HPO4 2-

Question 24

Phosphate

Answer 24

PO4 3-

Question 25

Sulfuric acid

Answer 25

H2SO4

Question 26

Nitric acid

Answer 26

HNO3

Question 27

Acetic acid

Answer 27

CH3COOH

Question 28

Phosphoric acid

Answer 28

H3PO4

Question 29

Ammonia

Answer 29

NH3

Question 30

Methane

Answer 30

CH4

Question 31

Hydrogen gas

Answer 31

H2

Question 32

Iodine

Answer 32

I2

Question 33

Bromine

Answer 33

Br2

Question 34

Acid + metal

Answer 34

Salt + hydrogen

Question 35

Acid + carbonate

Answer 35

Salt + water + carbon dioxide

Question 36

Acid + base

Answer 36

Metal + water

Question 37

Two ways to measure rate of reaction

Answer 37

How quickly a reactant is used up | How quickly a product is formed

Question 38

Average rate of reaction equation

Answer 38

Amount of reactant used or formed over time taken

Question 39

Graphs on rate of reaction | Time and amount go on what intercept

Answer 39

Time on x | Amount on y

Question 40

When is the reaction fastest

Answer 40

At the start

Question 41

The steeper the slope

Answer 41

The faster the reaction

Question 42

Collision theory

Answer 42

All particles collide with each other before a chemical reaction

Question 43

The more collisions between particles in a a given time

Answer 43

The faster the reaction

Question 44

Activation energy

Answer 44

Energy needed for chemical reactions to occur

Question 45

Four factors hat affacet the rate of chemical reaction

Answer 45

Surface area Concentration Temperature Catalysts

Question 46

If the concentration of a gas or liquid increase?

Answer 46

There are more reactant particles in the same volume More collisions per unit time Rate of reaction increases

Question 47

Catalyst

Answer 47

Substance which speeds up a chemical reaction

Question 48

Ammonium

Answer 48

NH4+