1 Metals appear under the thick red line in the periodic table. Are there more metals or non-metals? Where are all the non-metals found in the table?
2 Non-metals are very important to us. Give one use of each of the following non-metals: a) neon b) carbon c) oxygen d) silicon.
3 Phosphorus is an important non-metal as it is found, in the form of phosphate, in washing powders and fertilisers. Use the information in the article to answer the following questions. a) The article claims that stinging nettles are growing taller as a result of extra phosphate. Explain carefully how you would test this statement. Think about: i) what you would grow the nettles in ii) how you would measure their growth iii) what your 'control' would be iv) how much 'extra'phosphate you would give the nettles. b) Artificial fertilisers wash out of soils easily and then pass into rivers and lakes. Explain what happens when fertilisers pollute rivers and lakes. Name one part of the country where this has been a problem.
