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G7 CH8 - Chemical Reaction
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Complete these word equations
Magnesium and hydrogen
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A gas was tested with a lighted splint and it made a popping sound. Which gas was it?
Hydrogen
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Complete these word equations
Hydrochloric and hydrogen
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How many cm3 is this reading?
16 cm3
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Is this fair test or not?
Not Fair test. (Because the acid is not same)
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When baking powder and vinegar react, a gas is also given off. This gas is __________
Carbon dioxide
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Iron filings heated with sulfur to produce iron sulfate. Chemical reaction or Physical change?
Chemical Reaction
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When a piece of apple is placed in hydrogen peroxide it bubbles. A gas is given off. This gas is __________
Oxygen
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How many cm3 is this reading?
47 cm3
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The products of a chemical reaction contain the elements magnesium, hydrogen and chlorine. What elements are present in the reactants?
Magnesium + Hydrogen + Chlorine
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If the solution is green, what pH does it has?
pH 7
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Sugar dissolving in a hot drink. Chemical reaction or Physical change?
Physical Change
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How many cm3 is this reading?
12 cm3
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the reaction of magnesium with acid and seen bubbles of the gas. What gas is produced?
Hydrogen
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