Rates of Reaction Flashcards

1
Q

Rate of reaction equation

A

Amount of reactant used up or amount of product formed ÷ Time

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2
Q

Name some collision theory factors

A

Temperature - Hot more energy
Concentration - higher collide more often
Surface Area

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3
Q

Rate of reaction practical

A
  • Add hydrochloric acid to sodium thiosulfate

- Time until cloudy, x underneath

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4
Q

Rate of reaction practical

A
  • Add hydrochloric acid to sodium thiosulfate

- Time until cloudy, x underneath

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5
Q

Define Catalysts

A

Substances that speed up chemical reactions without being used up.
Provides a lower activation energy

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6
Q

Define Reversible Reaction

A

A chemical reaction in which the products re-form the original reactants, as many times as they want

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7
Q

What is a closed system

A

A system in which no matter is allowed to enter or leave

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8
Q

Define Alkanes

A

Single bond hydrocarbon

CnH2n+2

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9
Q

Define Alkenes

A

Double Bonded Hydrocarbons

CnH2n

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10
Q

What are the first 4 Alkanes

A
  • Methane
  • Ethane
  • Propane
  • Butane
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11
Q

What are the first 4 Alkenes

A
  • Methane
  • Ethene
  • Propane
  • Brutane
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12
Q

What is cracking hydrocarbons

A

Longer hydrocarbons can be broken into shorter useful hydrocarbons

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13
Q

Define Addition reaction

A

A reaction in which a reactant is added to an unsaturated molecule to make a saturated molecule

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14
Q

What reacts with bromine water

A

Alkenes react with bromine water turning it from orange to colourless

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15
Q

Define Fermentation

A

Process by which cells release energy in the absence of oxygen
25 to 50 degrees

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16
Q

What is the Alcohol Functional Group?

A

Hydroxyl (OH)

17
Q

What is carboxylic acid?

A

Carboxyl COOH

dissolves in water to form acidic solutions

18
Q

Define Amino Acids

A

Two function groups

  • Amine group NH2
  • Carboxyl group, COOH
19
Q

What are Thermosetting Polymers

A

Keep their shape once set

20
Q

What is Chromatography?

A

A process which separates the parts of a solution with special paper and a solvent.
stationary phase, doesn’t move
mobile phase does move

21
Q

Rf Value Equation

A

Rf = distance compound moved / distance water moved

22
Q

Define incomplete combustion

A

Limited supply of oxygen

  • Produces carbon monoxide + water
  • Produces carbon + water
23
Q

Define Complete Combustion

A

Non limited supply of oxygen

- Produces carbon dioxide and water