Metals and Non-metals
Crossword
Complete the crossword, then click on "Check" to check your answer. If you are stuck, you can click on "Hint" to get a free letter. Click on a number in the grid to see the clue or clues for that number.
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Check
Across:
3.
carbonate ores are changed into oxides by heating strongly in limitedair
4.
sulphide ores are converted into oxides by heating strongly in the presence of excess air
5.
minerals contain a very high
percentage of a particular metal
Down:
1.
Ores mined from the earth are usually contaminated with large amountsof impurities
2.
elements or compounds, which occur naturally in the earth’s crust,
OK