Save
Chemistry paper 2 ๐ฉโ๐ฌ๐งช
Save
Share
Learn
Content
Leaderboard
Share
Learn
Created by
izzy
Visit profile
Cards (119)
What is the term used to describe how quickly a reaction happens?
Rate of reaction
View source
How is the rate of reaction defined?
It is the change in a
quantity
divided by
time
.
View source
What quantities can be measured to determine the rate of reaction?
Mass
of reactant used or
volume of gas
produced.
View source
What does measuring the rate of reaction over time typically yield?
The
mean rate of reaction
.
View source
In the experiment with hydrochloric acid and sodium thiosulfate, what indicates the reaction is complete?
The cross on the paper becomes invisible.
View source
What
happens to the time taken for the reaction when the temperature is increased?โจ
The time taken decreases.
View source
How can the volume of gas produced be measured in a reaction?
Using a
gas syringe
connected to the reaction vessel.
View source
What does a graph of gas volume against time typically look like during a reaction?
It starts steeply and then levels out or
plateaus
.
View source
How can you find the rate of reaction at any point on a graph?
By drawing a
tangent
at that point.
View source
What effect does increasing the concentration of reactants have on the rate of reaction?
It increases the rate of reaction.
View source
Why does increasing temperature increase the rate of reaction?
Particles
move more quickly and collide with more
energy
.
View source
What is the role of a catalyst in a reaction?
It reduces the
activation energy
needed.
View source
What is a reversible reaction?
A reaction where products can revert to
reactants
.
View source
What happens in a closed system at equilibrium?
The rates of the
forward
and
reverse
reactions are equal.
View source
What is the prime example of a reversible reaction mentioned?
The Haber process.
View source
What does Le Chatelier's principle state?
If a system at
equilibrium
is subjected to a change, it will adjust to counteract that change.
View source
What happens if the pressure of a gas reaction is increased?
The reaction will favor the side with fewer
moles
of gas.
View source
How does increasing temperature affect an exothermic reaction?
It favors the
endothermic
reaction.
View source
What is the general formula for alkanes?
C<sub>n</sub>H<sub>2n+2</sub>
View source
What are hydrocarbons?
Molecules made up of only carbon and
hydrogen
atoms.
View source
What is the process used to separate different length alkanes from crude oil?
Fractional distillation
.
View source
Why do longer alkanes have higher boiling points?
They have stronger
intermolecular forces
.
View source
What is LPG?
Liquid
petroleum
gas.
View source
What is produced during complete combustion of alkanes?
Carbon dioxide
and
water
.
View source
What is the difference between alkenes and alkanes?
Alkenes have a
carbon-carbon double bond
; alkanes do not.
View source
How can you test for an alkene?
By adding
bromine water
; if it turns colorless, the alkene is present.
View source
What happens when an alcohol is oxidized?
It produces a
carboxylic acid
.
View source
What is the functional group of alcohols?
OH (
hydroxyl group
).
View source
What is condensation polymerization?
Joining two
monomers
with the release of
water
.
View source
What are amino acids?
Building blocks of
proteins
.
View source
What is DNA?
A large molecule that stores
genetic
code.
View source
What is chromatography used for?
Separating
substances
in a mixture.
View source
What are the main types of hydrocarbons?
Alkanes
: Saturated hydrocarbons with
single
bonds.
Alkenes
: Unsaturated hydrocarbons with at least one
double
bond.
View source
What are the uses of different fractions obtained from crude oil?
LPG
: Fuel for heating and cooking.
Petrol: Fuel for cars.
Kerosene: Fuel for
jet engines
.
Diesel: Fuel for
trucks and buses
.
Heavy fuel oil: Fuel for
ships
.
View source
What are the steps in the process of fractional distillation?
Heat crude oil to evaporate it.
Gases rise up the
fractionating column
.
Different fractions condense at different heights based on
boiling points
.
Collect the fractions for use.
View source
What is the significance of the double bond in alkenes?
It allows for addition reactions.
It makes alkenes
unsaturated
.
View source
What is the process of cracking in organic chemistry?
Breaking down longer
alkanes
into shorter alkanes and
alkenes
.
Can be done through
catalytic cracking
or
steam cracking
.
View source
What are the characteristics of polymers?
Made from repeating units (
monomers
).
Can be formed through
addition
or
condensation
polymerization.
View source
What is the importance of obtaining pure substances in chemistry?
Ensures accurate results in experiments.
Allows for the determination of
melting
and
boiling points
.
View source
What is a formulation in chemistry?
A mixture designed for a specific purpose with
precise
quantities.
Examples include
paints
,
fuels
, and
fertilizers
.
View source
See all 119 cards
See similar decks
AQA GCSE Chemistry
2458 cards
WJEC GCSE Chemistry
2012 cards
GCSE Chemistry
2586 cards
CCEA GCSE Chemistry
1737 cards
AQA A-Level Chemistry
2987 cards
OCR GCSE Chemistry
2187 cards
Edexcel GCSE Chemistry
1615 cards
OCR A-Level Chemistry
2997 cards
AP Chemistry
3342 cards
C6.2 Organic Chemistry
OCR GCSE Chemistry > Topic C6: Global Challenges
209 cards
3. Quantitative chemistry
GCSE Chemistry
254 cards
C6.1.2 Green Chemistry
OCR GCSE Chemistry > Topic C6: Global Challenges > C6.1 Improving Processes and Products
73 cards
Topic 6: Organic Chemistry I
Edexcel A-Level Chemistry
952 cards
Paper 2: Modern Texts and Poetry
AQA GCSE English Literature
697 cards
Topic 1: Key Concepts in Chemistry
Edexcel GCSE Chemistry
305 cards
Unit 1: Chemistry of Life
AP Biology
464 cards
Topic 5: Separate Chemistry 1
Edexcel GCSE Chemistry
164 cards
Paper 2: Thematic Studies
AQA GCSE Religious Studies > Assessment Structure
49 cards
Paper 1: Shakespeare and the 19th-century novel
AQA GCSE English Literature
718 cards
11.1 The overarching concepts in chemistry
AQA GCSE Chemistry > 11. Key ideas
82 cards
3.3.10 Aromatic Chemistry (A-level only)
AQA A-Level Chemistry > 3.3 Organic Chemistry
179 cards