Write the name of the following compound: ZnCl₂

Write the name of the following compound: CaCl₂

Write the name of the following compound: CaSO₄

Write the name of the following compound: NaOH

Write the name of the following compound: KOH

Write the name of the following compound: CuCO₃

Which two products result from adding Ca to CuSO₄

1. Copper Oxide
2. Copper
3. Sulphur
4. Calcium Sulphate
5. Sulphur Dioxide

Calcium added to Copper Sulphate: Ca + CuSO₄ What is the name for this type of reaction?

Calcium added to Copper Sulphate: Ca + CuSO₄ What happens to the combined mass of all the reactants?

1.   ?    Stays the same
2.   ?    Increases
3.   ?    Decreases

What is produced when you add Gold (Au) to Copper Sulphate?

1.   ?    An explosion
2.   ?    Gold Sulphate
3.   ?    Nothing

Which is the correct equation for burning methane (CH₄) in oxygen

1.   ?    CH₄ + 2O₂ -> CO₂ + 2H₂O
2.   ?    CH₄ + 2O₂ -> CO + 2H₂O
3.   ?    CH₄ + 2O₂ -> CO + 2H₂

What change happens to green Copper Carbonate (CuCO₃) when heated

1.   ?    Turns to a black liquid: CuO
2.   ?    Turns to a black powder: CuO plus bubbles of CO₂

Some Copper Carbonate was weighed, then heated and weighed again with the following results: CuCO₃ plus test tube
Before heating: 37.29g
After heating: 36.39g
What was the change in mass?

1.   ?    0.9 g mass increase
2.   ?    0.9g mass decrease
3.   ?    0.09g mass decrease

The gas given off when Copper Carbonate is heated…

1. Relights a glowing splint
2. Extinguishes a glowing splint
3. Turns lime water clear
4. Turns lime water cloudy

Magnesium burns fiercely in air: what is this reaction called?

Two pupils heat Mg in a crucible in an experiment to determine the change in mass. Why did they leave the crucible lid ON for most of the experiment?

1.   ?    To ensure the Magnesium burnt properly
2.   ?    To prevent the Magnesium catching fire and being lost into the air

Which is the correct equation for the burning of Magnesium in air?

1.   ?    Mg + O -> MgO
2.   ?    Mg + O₂ -> MgO
3.   ?    2Mg + O₂ -> 2MgO

What happens to the mass of magnesium when it is heated in air. The mass ....

1.   ?    increases
2.   ?    decreases
3.   ?    stays the same