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22 Cards in this Set
- Front
- Back
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What colour does Barium burn in a Flame Test?
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Pale Green
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What colour does Calcium burn in a Flame Test?
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Brick Red
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What colour does Sodium burn in a Flame Test?
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Orange
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What colour does Potassium burn in a Flame Test?
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Lilac
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What colour does Copper burn in a Flame Test?
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Green/Blue
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What colour does Lithium burn in a Flame Test?
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Red
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What colour precipitate is formed when Sodium Hydroxide is added to Aluminium (Al3+)?
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A White Precipitate is formed then the colourless
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What colour precipitate is formed when Sodium Hydroxide is added to Calcium (Cu2+)?
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A White Precipitate is formed
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What colour precipitate is formed when Sodium Hydroxide is added to Copper(ii) (Cu2+)?
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A Pale Blue Precipitate is formed
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What colour precipitate is formed when Sodium Hydroxide is added to Iron(ii) (Fe2+)? |
A Green Precipitate is formed
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What colour precipitate is formed when Sodium Hydroxide is added to Iron(iii) (Fe3+)? |
A Brown (rust) Precipitate is formed
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What colour precipitate is formed when Silver Nitrate reacts with the halide ion chloride (Cl-)?
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A White Precipitate is formed
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What colour precipitate is formed when Silver Nitrate reacts with the halide ion bromide (Br-)?
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A Cream Precipitate is formed
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What colour precipitate is formed when Silver Nitrate reacts with the halide ion iodide (I-)?
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A Yellow Precipitate is formed
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What is Qualitative Analysis?
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Investigation into present substances in an unknown sample
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What is Quantitative Analysis?
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Investigation into the amount of each substance present in an unknown sample
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How is Ammonium tested for in an unknown sample?
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Heated with Sodium Hydroxide, if present a smelly alkaline gas is given off and damp red litmus paper turns blue
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Why is Sodium Fluoride used to treat water?
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Reduces Tooth Decay
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Why are aluminium salts used to treat water?
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They remove small particles of solid in water
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What is a mineral?
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A mineral is a naturally occurring substance, representable by a chemical formula, that is usually solid and inorganic, and has a crystal structure.
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What makes water "hard"?
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When Minerals containing Calcium and Magnesium ions are present in water the water is called hard
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What is a problem with hard water?
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It takes onger to form a lather with soap than soft water
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