3508580
Descripción
Test por Charli Coop, actualizado hace más de 1 año
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Creado por Charli Coop
hace casi 9 años
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Pregunta 1
Pregunta
What color is pH 7?
Respuesta
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Green
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Blue
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Red
Pregunta 2
Pregunta
What is the name of the gas produced in the test tube?
Respuesta
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Carbon Dioxide
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Oxygen
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Hydrogen
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Sulphur Dioxide
Pregunta 3
Pregunta
What must happen between the acid and metal particles if they react?
Respuesta
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They must get close to each other
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They need to swap electrons
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They need to collide
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They need to avoid each other
Pregunta 4
Pregunta
What will increase the rate of the reaction?
Respuesta
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Decreasing the temprature
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Increasing the volume of acid
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Increasing the concentration of the acid
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Decreasing the concentration of the acid
Pregunta 5
Pregunta
What would you observe if the reaction time decreased?
Respuesta
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More bubbles per minute
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Less bubbles per minute
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The solution would change colour
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Everything would stay the same
Pregunta 6
Pregunta
Increasing the temperature would increase the rate of the reaction because...
Respuesta
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It would increase the amount of acid particles
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It would increase the amount of magnesium particles
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It would increase the Kinetic energy of the acid particles and so they move faster
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It would decrease the frequency of collision
Pregunta 7
Pregunta
What is the name of the salt produced in the reaction
Respuesta
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Magnesium Sulphate
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Magnesium Chloride
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Magnesium Nitrate
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Calcium Chloride
Pregunta 8
Pregunta
What would be the effect cutting up the Magnesium into smaller pieces?
Respuesta
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Reaction rate would increase
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Reaction rate would decrease
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Reaction rate would stay the same
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Reaction would stop
Pregunta 9
Pregunta
1g of magnesium was placed in 10 mL of acid. The total amount of hydrogen produced was measured. The experiment was then repeated with 1g of magnesium cut into smaller pieces. What was the total effect on the total hydrogen produced?
Respuesta
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It increased
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It decreased
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It stayed the same
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None was produced
Pregunta 10
Pregunta
What is it meant by frequency of collisions?
Respuesta
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The number of collisions
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The number of collisions per mL
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The number of collisions per second
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The total number of collisions
Pregunta 11
Pregunta
A fire is started using small pieces of wood (kindling) because
Respuesta
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It is lighter to carry
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The wood has a larger surface area and so burns more quickly
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The wood will be drier
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The wood is more concentrated
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