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9E Flashcards
Question | Answer |
---|---|
Name 3 properties of metals ans 3 properties of non metals. | Metals: Good conducters of heat/electricity, malleable, ductile. Non-metals: Brittle, dull, good insulators |
What is the word equation for neutralisation? | acid + base -> salt + water |
What properties would a metal need to have to be chosen to be used for building fighter jets? | Strength, lightweight, resistent to most corrosion |
Define chemical weathering and physical weathering. | Chemical weathering: When rocks are broken up or dissolved by chemical reactions. Physical weathering: When rocks are worn away or broken up by physical processes such as changes in temperature. |
Explain how metals, rocks and concrete are non-renewable and bad for the environment. | The extraction of raw materials freom quarries can badly damage the environment and treansporting the materails uses up lots of fuel too. |