Select brightly coloured flowers, such as the purple and red bougainvillaea, or coloured
leaves. Squeeze or grind one of the coloured flowers or leaves in a mortar with a mixture
made of 2 mL acetone and 2 mL ethanol. By this means the colouring matter will be
extracted into the solvent. Filter and collect the filtrate. Repeat this experiment with one
or two other flower colours.
sharon kalunda answered the question on April 12, 2019 at 07:52
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Give an experimental procedure to investigate what combines with iron during rusting.
(Solved)
Give an experimental procedure to investigate what combines with iron during rusting.
Date posted:
April 12, 2019
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Answers (1)
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Describe an experiment to determine the conditions for rusting and to establish the best metal which can be used to prevent rusting among zinc, copper...
(Solved)
Describe an experiment to determine the conditions for rusting and to establish the best metal which can be used to prevent rusting among zinc, copper and tin.
Date posted:
April 12, 2019
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Answers (1)
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Explain how carbon dioxide is used in cooking.
(Solved)
Explain how carbon dioxide is used in cooking.
Date posted:
April 12, 2019
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Answers (1)
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Describe how Carbon dioxide is prepared,collected and tested in the laboratory.
(Solved)
Describe how Carbon dioxide is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Answers (1)
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Describe how Ammonia gas is prepared,collected and tested in the laboratory.
(Solved)
Describe how Ammonia gas is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Answers (1)
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Describe how Hydrogen chloride gas is prepared,collected and tested in the laboratory.
(Solved)
Describe how Hydrogen chloride gas is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Answers (1)
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Describe how Oxygen gas is prepared,collected and tested in the laboratory.
(Solved)
Describe how Oxygen gas is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Answers (1)
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Describe how Hydrogen gas is prepared,collected and tested in the laboratory.
(Solved)
Describe how Hydrogen gas is prepared,collected and tested in the laboratory.
Date posted:
April 12, 2019
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Answers (1)
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Describe experimental procedures to show the effect of heating substances.
(Solved)
Describe experimental procedures to show the effect of heating substances.
Date posted:
April 12, 2019
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Answers (1)
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Explain how you can Separate two immiscible liquids of different density.
(Solved)
Explain how you can Separate two immiscible liquids of different density.
Date posted:
April 12, 2019
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Answers (1)
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Explain how salt can be Separated from sand.
(Solved)
Explain how salt can be Separated from sand.
Date posted:
April 12, 2019
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Answers (1)
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Describe distillation as a method of seperation of mixtures.
(Solved)
Describe distillation as a method of seperation of mixtures.
Date posted:
April 12, 2019
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Answers (1)
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Describe how you can determine the density of a liquid.
(Solved)
Describe how you can determine the density of a liquid.
Date posted:
April 12, 2019
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Answers (1)
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Describe how you can find the density of a solid.
(Solved)
Describe how you can find the density of a solid.
Date posted:
April 12, 2019
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Answers (1)
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Describe how you can show that solubility of a substance depends on a particle size.
(Solved)
Describe how you can show that solubility of a substance depends on a particle size.
Date posted:
April 12, 2019
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Answers (1)
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Explain how the Solubility of a substance differs from solvent to solvent.
(Solved)
Explain how the Solubility of a substance differs from solvent to solvent.
Date posted:
April 12, 2019
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Answers (1)
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Explain how the Solubility of a substance in water is affected by temperature.
(Solved)
Explain how the Solubility of a substance in water is affected by temperature.
Date posted:
April 12, 2019
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Answers (1)
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Name the methods of preparing carboxylic acids?
(Solved)
Name the methods of preparing carboxylic acids?
Date posted:
April 12, 2019
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Answers (1)
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Describe an experiment to show that different salts have different Solubility in water.
(Solved)
Describe an experiment to show that different salts have different Solubility in water.
Date posted:
April 12, 2019
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Answers (1)
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Describe an experiment to show that Pressure affects the boiling point.
(Solved)
Describe an experiment to show that Pressure affects the boiling point.
Date posted:
April 12, 2019
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Answers (1)