Chemical Properties of Metals and Non-metals

The reactivity of iron is _____ that of copper.

Zinc is more reactive than iron; so no reaction will take place between them at normal temperature.

What will be the colour of the solution of zinc sulphate after the reaction with iron nail ?

What will be the colour of solution before and after the reaction of zinc sulphate and iron nail?

Iron is more reactive than zinc hence reaction between zinc sulphate and the iron nail will take place.

What will happen when zinc sulphate reacts with iron nail?

Name the colourless gas that evolves when potassium reacts with water. (Hydrogen / Oxygen)

The student decides to test the fertilizers that she has made. She decides to put some of each fertilizer (potassium nitrate, magnesium sulphate and calcium sulphate) on a separate area of grass and measures how much the grass grows in a week.

Suggest two control variables for this experiment.

Today, iron and copper have different prices. Much of this is due to the abundance of iron and copper ores. Research the current cost of scrap iron and scrap copper. You may even be able to find out how the prices have changed in recent years. What does this tell you about the abundance of iron and copper ores?

Bronze is a metal that contains copper. Ancient history is often divided into the Stone Age, the Bronze Age and the Iron Age. Although these periods started at different times in different places, the Bronze Age started around $3000 \mathrm{BC}$ and the Iron Age in around $1200 \mathrm{BC}$. Why do you think that the Bronze Age came before the Iron Age?

What advantages did people who had the technology to produce iron have over those who did not?

Research the differences in the properties of iron and copper. Why is iron a more widely used material?

Explain the reaction of metals with oxygen by two examples.

Write the reaction of metals and non-metals with water.

Which of the following metal does not react with sodium hydroxide solution and produces hydrogen gas?

Name the products formed when sulphur reacts with the concentrated nitric acid.

Write the chemical equation for the reaction of sodium metal with water and oxygen.

Explain the reactivity of metals with oxygen, giving examples.

Metals on reacting with oxygen form metal oxides.

Sodium is kept in _____. (water/ kerosene)