What color is pH 7?
Green
Blue
Red
What is the name of the gas produced in the test tube?
Carbon Dioxide
Oxygen
Hydrogen
Sulphur Dioxide
What must happen between the acid and metal particles if they react?
They must get close to each other
They need to swap electrons
They need to collide
They need to avoid each other
What will increase the rate of the reaction?
Decreasing the temprature
Increasing the volume of acid
Increasing the concentration of the acid
Decreasing the concentration of the acid
What would you observe if the reaction time decreased?
More bubbles per minute
Less bubbles per minute
The solution would change colour
Everything would stay the same
Increasing the temperature would increase the rate of the reaction because...
It would increase the amount of acid particles
It would increase the amount of magnesium particles
It would increase the Kinetic energy of the acid particles and so they move faster
It would decrease the frequency of collision
What is the name of the salt produced in the reaction
Magnesium Sulphate
Magnesium Chloride
Magnesium Nitrate
Calcium Chloride
What would be the effect cutting up the Magnesium into smaller pieces?
Reaction rate would increase
Reaction rate would decrease
Reaction rate would stay the same
Reaction would stop
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?
It increased
It decreased
It stayed the same
None was produced
What is it meant by frequency of collisions?
The number of collisions
The number of collisions per mL
The number of collisions per second
The total number of collisions
A fire is started using small pieces of wood (kindling) because
It is lighter to carry
The wood has a larger surface area and so burns more quickly
The wood will be drier
The wood is more concentrated
