physics test

Standard

SCIENCE TEST
CHEMISTRY. 23 May
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1. Which gas do animals including humans need?
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2. Carbon dioxide is needed by which living organisms?
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3. What is the process called when a gas turns into a liquid?
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4. Is freezing a reversible change?
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5. Is melting reversible?
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6. Is condensation reversible?
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7. Is burning reversible?
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8. Name a food in which microbes are used?
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9. What living organisms pass from one person to another and are a disease?
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10. What are good conditions for microbes to grow in?
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11. CO2 is the formula for which gas?
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12. H2O is the formula for what substance which is usually a liquid?
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13. Which element has the symbol ”O”?
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14. Which element has the symbol ”H”?
__________________________
15. Which element has the symbol ”C”?
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LONG ANSWERS
1. Describe gas exchange between animals and plants.
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2. What is a solution? Describe how temperature and the size of granules can make a solid dissolve faster or slower in water.
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3. Describe why we use degrees celsius to measure temperature. Remember to say what happens to water at 0 degrees and 100 degrees.
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END OF PAPER
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About Calers

Born Belfast 1971. I read history at Edinburgh. I did a Master's at UCL. I have semi-libertarian right wing opinions. I am married with a daughter and a son. I am allergic to cats. I am the falling hope of the not so stern and somewhat bending Tories. I am a legal beagle rather than and eagle. Big up the Commonwealth of Nations.

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