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24 Cards in this Set
- Front
- Back
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Write these word equations:
1) zinc + hydrochloric acid - 2) sodium carbonate + hydrochloric acid - 3) hydrochloric acid + copper carbonate 4) oxygen + nickel 5) Silver carbonate + hydrochloric acid |
1) zinc chloride + hydrogen
2) sodium chloride + carbon dioxide + water 3) copper chloride + carbon dioxide + water 4) nickel oxide 5) silver chloride + carbon dioxide + water |
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Classify each of the following compounds as soluble or insoluble in water:
a) copper nitrate b) lead sulfate c) zinc hydroxide d) tin carbonate e) sodium sulfate f) silver carbonate g) calcium chloride h) silver chloride i) potassium carbonate j) magneium nitrate |
a) soluble (1)
b) insoluble (4) c) insoluble (6) d) insoluble (5) e) soluble (2) f) insolulble (5) g) soluble (3) h) insoluble (3) i) siluble (2) j) soluble (1) |
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Find the products for the following and state if it precipitates:
a) silver nitrate + sodium chloride b) sodium hydroxide + magnesium chloride c) silver nitrate + cobalt chloride d) sodium hydroxide + lithium chloride |
a) sodium nitrate + silver chloride, no (all nitrates dissolve)
b) sodium chloride + magnesium hydroxide, yes (rule 6) c) cobalt nitrate + silver chloride, yes (rule 3) d) lithium hydroxide + sodium chloride, no (both soluble) |
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Predict the result:
Copper + silver nitrate |
silver + copper nitrate
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Write and balance the following synthesis reaction equations:
- Na(s) + Cl2(g) - Mg(s) + F2(g) - Al(s) + F2(g) |
- 2NaCl(s)
- MgF2 - 2AlF3 |
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Write the products and balance the following combustion reactions:
- C5H12 + O2 - C10H22 + O2 |
- 5[CO2] + 6[H20]
- 20CO2 + 22H2O |
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What is happening to each of the atoms' electrons in all of these reactions:
Na + Cl - NaCl Na+ + Cl- - NaCl |
the electrons are always moving
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What do all redox reactions have in common?
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One reactant loses electrons and another gains electrons
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What is oxidation?
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Loss of electrons
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What is reduction?
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Gain of electrons
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Where dpes the word 'redox' come from?
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Oxidation and reduction always occur together. Hence, the 2 words are combined to form the word redox
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2Zn(s) + O2(g) - 2ZnO(s):
a) From which reactant are the electrons being transferred? b) To which reactant are they transfered? |
a) oxygen
b) zinc |
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Give an example of a redox reaction where electron transfer is not complete
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the burning of methane in a gas jet
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List all 3 uses of acids and 3 uses of bases
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Acids: car batteries, dietary aids, fizzy drinks
Bases: soaps, rice cakes, fertilsers |
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What do some acids and bases have in common?
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They are both chemicals and affect you every day
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What is the difference between a base and an alkali?
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Alkali: can be dissolved in water
Base: cannot |
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What acid or base is used:
a) to make cakes rise b) in fizzy drinks c) in drain cleaners d) in vinegar e) in car batteries |
a) sodium bicarbonate
b) carbonic acid c) sodium hyrdoxide d) Acetic acid e) sulfuric acid |
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What is an acid-base indicator?
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a substance that can be used to tell whether a substance is an acid or a base
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Copper oxide + sulfuric acid
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copper sulfate + water
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Sodium carbonate + hydrochloric acid
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sodium chloride + carbon dioxide + water
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Magnesium oxide + hydrochloric acid
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magnesium chloride + water
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What causes the burning sensation in your stomach when you have indigestion?
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hydrochloric acid
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Explain how antacids relieve indigestion
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An antacid contains a base which neutralises the excess acid in the stomach and relieve the pain
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Which type of substance has a pH value:
a) less than 7 b) more than 7 c) equal to 7 |
a) gastric juices
b) sea water c) black coffee |
