Suggest TWO benefits of 'superconductors'

No energy is lost as heat, Loss free power transmission

How do oil companies supply enough petrol for the demand in the world?

Cracking of long hydrocarbons into petrol

TWO environmental problems with transporting oil in ships

Carbon dioxide made by burning fuel causes global warming, Oil spills kill wildlife + destroys habitats

What is meant by the word 'superconductor'?

A material with a very low resistance

Why is crude oil a FINITE resource that is NON-RENEWABLE

It will run out as it takes millions of year to make

Why do perfume particles evaporate easily?

Weak intermolecular forces that are easily overcome

Why does increasing the temperature increase the rate of reaction?

Particles move faster = more frequent successful collisions

Equation to calculate the rate of a reaction

rate = amount of product made / time

studbud

GCSE Chemistry

10 termsStudBud Administration371 plays

#OCR chemistry

Flashcards10 cardsFPractice quizPHost liveL

Questions 10

Answers

1
Suggest TWO benefits of 'superconductors'
No energy is lost as heat
Only work at very low temperatures
Lots of energy is wasted as heat
Loss free power transmission
2
Name the general type of reactant that will run out first in a reaction.
Equilibrium reactant
Reactive reactant
Limiting reactant
Gas reactant
3
How do oil companies supply enough petrol for the demand in the world?
Create electric powered cars
Cracking of long hydrocarbons into petrol
Fractional distillation of long hydrocarbons into petrol
Drill for more crude oil
4
The factor that will INCREASE the rate of a reaction
Low concentration
High temperature
No catalyst
Low temperature
5
TWO environmental problems with transporting oil in ships
Carbon dioxide made by burning fuel causes global warming
Oil spills kill wildlife + destroys habitats
Carbon dioxide made by burning fuel ruins the ozone layer
Air pollution
6
What is meant by the word 'superconductor'?
A material that conducts electricity quickly
A material with a very low resistance
A material that conducts electricity in low temperatures
A material with a very high resistance
7
Why is crude oil a FINITE resource that is NON-RENEWABLE
There is a limited supply and there's not much left
It can't be used again
It can't be remade
It will run out as it takes millions of year to make
8
Why do perfume particles evaporate easily?
Weak intermolecular forces that are easily overcome
Strong covalent bonds between the atoms
Weak intermolecular forces that are difficult to overcome
Heat from the skin warms the particles so they evaporate
9
Why does increasing the temperature increase the rate of reaction?
Particles move faster = more frequent successful collisions
Particles move slower = less frequent successful collisions
Particles have more energy = collide more often
Particles collide with a larger force = faster reaction
10
Equation to calculate the rate of a reaction
rate = amount of product made / temperature
rate = amount of product made / time
rate = amount of reactant/ volume of gas
rate = amount of product made / mass

GCSE Chemistry Flashcards | StudBud