C3 mini quiz

Descripción

GCSE (Chemistry) Science Test sobre C3 mini quiz, creado por Rachel_ellen el 21/03/2015.
Rachel_ellen
Test por Rachel_ellen, actualizado hace más de 1 año
Rachel_ellen
Creado por Rachel_ellen hace más de 9 años
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4

Resumen del Recurso

Pregunta 1

Pregunta
What does the rate of reaction measure
Respuesta
  • time it takes to make oxygen
  • amount of product made in a specific time
  • the product produced from a chemical reaction

Pregunta 2

Pregunta
What is the limiting reactant?
Respuesta
  • the only reactor
  • the one that is all used up at the start
  • the one that is used by the end of the reation

Pregunta 3

Pregunta
In a reaction at low temperatures the particles move fast
Respuesta
  • True
  • False

Pregunta 4

Pregunta
In a reaction at high temperatures the particles move fast
Respuesta
  • True
  • False

Pregunta 5

Pregunta
What happens if there is a low concentration
Respuesta
  • the particles collide more
  • the particles will be more spread out
  • the rate of reaction will be faster

Pregunta 6

Pregunta
What is the relative atomic mass of carbon?
Respuesta
  • 6
  • 12
  • 1
  • 18

Pregunta 7

Pregunta
How do you work out percentage yield?
Respuesta
  • actual yield - predicted yield
  • predicted yield x actual yield
  • actual yield / predicted yield x100

Pregunta 8

Pregunta
What is atom economy?
Respuesta
  • a way of comparing the amount of product made to the amount produced
  • an industrial process
  • a way of measuring the number of atoms that are wasted in a chemical reaction
  • the rate a reaction happens

Pregunta 9

Pregunta
Which reaction releases energy?
Respuesta
  • Exothermic
  • Endothermic

Pregunta 10

Pregunta
Which reaction causes a temperature drop?
Respuesta
  • Exothermic
  • Endothermic

Pregunta 11

Pregunta
What can be made from batch processes
Respuesta
  • Ammonia
  • Medicines
  • Sulfuric acid

Pregunta 12

Pregunta
Which one has a layered structure?
Respuesta
  • Diamond
  • Buckminster fullerene
  • Graphite
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