Recent questions in Chemistry

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A solution contains 29.1g per litre of aluminium Sulphate. Calculate the number of Sulphate ions in 350cm3 of the solution.(Al = 27, S = 32, O = 16) Avogadro’s constant = 6.0 x 1023.

asked Aug 17, 2021 in Chemistry Form 3 by anonymous

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When magnesium is burnt in air it reacts with both oxygen and nitrogen gas giving a white ash. Write two equations for the reactions that take place.

asked Aug 17, 2021 in Chemistry Form 1 by anonymous

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Determine the number of neutrons in 1818O

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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What are isotopes?

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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Differentiate between strong and weak acids.

asked Aug 17, 2021 in Chemistry Form 1 by anonymous

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Name the indicator that can be used in the laboratory to tell the pH of lemon juice.

asked Aug 17, 2021 in Chemistry Form 1 by anonymous

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State one disadvantage of using flower extracts as acid – base indicators.

asked Aug 17, 2021 in Chemistry Form 1 by anonymous

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what happens oxygen is mixed with hydrogen

asked Aug 16, 2021 in Chemistry Form 3 by realpalmer

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what's a bunsen burner?

asked Aug 11, 2021 in Chemistry Form 1 by Stellar

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State reasons why most laboratory apparatus are made of glass.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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State 4 career areas studied in chemistry.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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Study the flame shown below.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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Name two method of separating miscible liquids.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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The diagram below shows various states of matter. Study it and answer the questions that follow.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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State four substances that sublime.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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What is sublimation?

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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State two long-term effects of drug abuse.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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Name three frequently abused drugs.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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Putting off flames after use is one of the safety rules in the laboratory. State five other rules.

asked Aug 11, 2021 in Chemistry Form 1 by anonymous

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A Magnesium ribbon was cleaned with steel wool and used in the following set up. Wet sand was heated before Magnesium ribbon.

asked Aug 6, 2021 in Chemistry Form 1 by anonymous

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