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Year 10 Review

Year 10 Review. Material World – Acids and Materials. 1. All matter is made up of atoms. Label the parts of the atom. Nucleus Proton Neutron Electron Shell Hint: the red particles are positive. E. E. A. C. B. A. D. C. B. D.

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Year 10 Review

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  1. Year 10 Review Material World – Acids and Materials

  2. 1. All matter is made up of atoms. Label the parts of the atom. Nucleus Proton Neutron Electron Shell Hint: the red particles are positive E E A C B A D C B D

  3. 2. Fill in the missing symbols and names of the elements. Hydrogen Chlorine He K Lithium Silicon Beryllium Sodium B Mg Carbon Fluorine N O Aluminium Sulfur

  4. 3. Work out what type and how many atoms are in a compound by looking at its formula. • H2O = 2 x H and 1 x O • CO2 • 2FeS • C6H12O6 • 3O2 • MgCl2 • Ca(OH)2 = 1 X C and 2 X O = 3 = 2 X Fe and S X O = 2 = 6 X C and 12 X O and H X 12= 24 = 3 X 2 X O = 6 = 1 X Mg and 2 X Cl = 3 = 1 X Ca and 2 X O and 2 X H = 5

  5. 4. Complete the following word equations. Base • Acid + __________  salt + water • Acid + __________  salt + water + carbon dioxide • Acid + __________  salt + hydrogen gas Hint: use metal, carbonate, and base Carbonate Metal

  6. 6. Name 3 acids and 3 bases. Acids Lemon juice Bile in stomach Vinegar Bases Clothes washing powder Baking soda Soap

  7. 7. Where would you find acids, bases and water on the pH scale? • Strong acids – pH = 0 • Weak acids – pH = 6 • Water – pH = 7 • Weak bases – pH = 8 • Strong bases – pH = 14

  8. 8. Match the test with the gas it tests for. C 1. Hydrogen 2. Oxygen 3. Carbon dioxide A. Limewater will change from clear to white; a lit splint will go out B. A lit splint blown out will relight C. ‘pop’ test – a flame goes out with a ‘pop’ B A

  9. 9. Give a use and a reason for that use for each metal listed.

  10. 10. What is needed for complete combustion? • Lots of oxygen

  11. 11. What are the products of complete combustion? Incomplete combustion? Hint: What colour forms on the bottom of a beaker if it is held over a yellow flame?

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