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Year 11 Additional Chemistry > Rates Of Reaction > Flashcards

Rates Of Reaction Flashcards

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1
Q

How do chemical reactions happen?

A

If reactant particles collide with enough energy

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2
Q

Name 4 factors which effect the rate of reaction

A 
Temperature 
Concentration 
Surface area 
The use of a catalyst 
Pressure of reacting gas
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3
Q

The more …… particles collide the and the ….. proportions of collisions with energy the …… the reaction

A

Frequent
Greater
Greater

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4
Q

Rate of reaction equation

A

The time taken

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5
Q

Name a slow reaction

A

Chemical weathering of rocks

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6
Q

Name a quick reaction

A

Explosions

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7
Q

If a reaction is slow what is the rate

A

Low rate of reaction

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8
Q

If the reaction is quick what is the rate

A

High rate of reaction

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9
Q

What is the mass of a substance

A

Solid, liquid or gas

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10
Q

How to find the volume of gas

A

Use a gas syringe

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11
Q

If the higher the temperature, concentration and surface area, what will the line look like on the graph

A

Steep, fastest at the start an then starts to level off

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12
Q

If the lower the temperature, concentration and surface area, what will the line look like on the graph

A

A sloped line on the graph which take longer to react but ends up in the same place as the higher reaction

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13
Q

The ….. the line, the …… The rate of reaction

A

Steeper

Greater

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14
Q

When are relations fastest

A

At the start, the concentration is at it greatest

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15
Q

Why does it mean if the line is horizontal

A

The reaction has stopped

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16
Q

Why must the particles collide

A

To create energy to producers a reaction

17
Q

How increasing the concentration effects the rate of reaction

A
  • More reactants in the same volume
  • Greater chance of collision
  • R.O.R increases
18
Q

How increasing the particle size effects the rate of reaction

A
  • Surface area increases
  • More particles are exposed
  • Greater chance of collision
  • R.O.R increases
19
Q

How increasing the temperature effects the rate of reaction

A
  • Reactant particles love quicker
  • More particles have activation energy
  • Particles collide more often
  • More collision -> R.O.R increases
20
Q

How the use of a Catalyst effects the rate of reaction

A
  • They lower the activation energy needed
  • More collisions -> cause a reaction
  • R.O.R increases
  • Catalysts help to reduce industry costs

Year 11 Additional Chemistry (5 decks)

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