C6

Question 1

slow rate of reaction example

Answer 1

rust, chemical weathering

Question 2

fast rate of reaction example

Answer 2

burning

Question 3

what factors affect rate of reaction

Answer 3

temp
concentration
surface area
catalyst

Question 4

recall the collision theory

Answer 4

in order for collisions to be successful reacting particles must collide with sufficient energy and with proper orientation

Question 5

what does increasing temp do?

Answer 5

move faster
collide more frequently
enough Ea

Question 6

effect of increased conc on rate

Answer 6

more particles in same volume

frequency increase

Question 7

effect of increased surface area

Answer 7

more area to work on

more frequent

Question 8

effect of using a catalyst on rate

Answer 8

decrease activation energy by giving an alternative reaction pathway

Question 9

how to measure rate

Answer 9

precipitation and colour change
mass change
volume of gas

Question 10

drawbacks of using colour change to measure rate

Answer 10

might not agree on exact point

cant plot a graph

Question 11

mass change is the most _____ method of measuring rate

Answer 11

accurate

Question 12

how to measure volume of gas

Answer 12

gas syringe

Question 13

what happens if the reaction lies to the right

Answer 13

greater conc than reactant

Question 14

what happens if a reaction lies to the left

Answer 14

conc of reactants greater than product

Question 15

recall le chateliers principle

Answer 15

if you change the conditions of a reversible reaction the system will try to counteract the change

Question 16

if you decrease temp in reversible reaction

Answer 16

equilibrium will move to the exp side

Question 17

change pressure

Answer 17

system tried to reduce it

Question 18

order of gases from top to bottom in fractional distillation

Answer 18

LPG
petroleum
naphtha
kerosene 
diesel
fuel oil 
bitumen

Question 19

what is a saturated compound

Answer 19

each carbon has 4 covalent bonds

Question 20

formula for methane

Answer 20

CH4

Question 21

general formula for alkanes

Answer 21

CnH2n+2

Question 22

what is the 4th suffix in alkanes

Answer 22

but-

Question 23

combustion word equation

Answer 23

fuel + oxygen = carbon dioxide + water

Question 24

why do we use fractional distillation

Answer 24

separate different hydrocarbons from a mixture to use each more effectively

Question 25

there is a temperature ____ within the distillation column

Answer 25

gradient

Question 26

what is cracking

Answer 26

large molecules broken down by heating and over a hot catalyst

Question 27

alkenes are ______ hydrocarbons

Answer 27

unsaturated

Question 28

what happens when a large alkene is cracked

Answer 28

breaks into an alkane and an alkene