Q.1.
Why are ionic compounds formed when a metal reacts with a non-metal?
Q.2.
What would you see if you added potassium to water?
Q.3.
Which of the following would be produced when lithium carbonate reacts with nitric acid?
Q.4.
If you drop a piece of cleaned magnesium ribbon into a solution of silver nitrate, the magnesium becomes coated with a grey substance. What is the explanation for this?
Q.5.
Which of the following metals is displaced from its ore by using carbon?
Q.6.
What would be the salt produced in the reaction of iron and hydrochloric acid?
Q.7.
One way of producing copper would be to add which of the following metals to copper sulfate solution?
Q.8.
What would you see if you added lithium to water?
Q.9.
Which of the following combinations of chemicals is likely to be the most exothermic (gives out the most energy) when mixed together?
Q.10.
Which of the following reactions does not produce hydrogen gas?