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Question
Define the following term:
Precipitate
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Solution
Chemical reactions which are characterised by the formation of insoluble solid substances are called precipitates.
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MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Reduction reaction is the exact opposite of
- displacement reaction
- decomposition reaction
- oxidation reaction
- none of these
Give an example of a reaction where the following are involved
Heat
Give reason for the following:
Molybdenum is used in the manufacture of ammonia.
Write your observation and a balanced equation in the case of the following substances being heated.
Copper nitrate.
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
Limestone contains ______ mainly.
Which of the following is not an “element + element → compound” type reaction?
Silver metal can displace hydrogen gas from nitric acid.
Write the characteristics of chemical change.
______ is the chemical name of limestone.
