Recent questions in Chemistry Form 2

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1 answer

Give 2 reasons why helium is used in weathers baloons

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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4 answers

The diagram below represents part of the periodic table use it to answer the questions that follow.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

The diagram shows electric current passing through dilute sulphuric (iv)acid

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

Explain how you would obtain solid sodium carbonate from a mixture of lead II carbonate and sodium carbonate.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

The diagram shows the structures of two allotropes of carbon. Study them and answer the questions that follow

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

X+ is an ion with electronic configuration 2,8,8. Identify element X

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

Draw a dot and cross diagram showing the bonding in a molecule of calcium oxide. Name the type of bond.

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

The table below shows the relative atomic masses and the percentage abundance of the isotopes T1 and T2 of element T

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

write the electronic configuration of calcium (atomic number 20) and magnesium (atomic number 12)

asked Aug 4, 2021 in Chemistry Form 2 by anony mous

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1 answer

A circuit consists of a battery, a metal wire, an ammeter and a switch connected in series. The switch is closed and the ammeter reading noted. The metal wire is now heated.

asked Jul 29, 2021 in Chemistry Form 2 by anonymous

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2 answers

Briefly explain the following observations.

asked Jul 28, 2021 in Chemistry Form 2 by anony mous

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1 answer

Rubidium (Rb) is a member of the alkali metals. Predict how the element reacts with:

asked Jul 28, 2021 in Chemistry Form 2 by anony mous

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1 answer

An atom of an element has the electronic configuration 2.8.2

asked Jul 28, 2021 in Chemistry Form 2 by anony mous

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1 answer

An element y has the electronic configuration of 2:8:5 which period of the periodic table does, the element belong

asked Jul 27, 2021 in Chemistry Form 2 by monicahwangombe

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1 answer

Write down the electronic configuration of the atoms with the following atoms with the following atomic numbers

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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1 answer

Other than their location in the atom, name two other differences between an electron and a proton.

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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1 answer

An element y has an electron arrangement of 2.8.5

asked Jul 27, 2021 in Chemistry Form 2 by anony mous

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1 answer

A solution of hydrogen chloride in water reacts with zinc carbonate but a solution of the gas in methylbenzene does not. Explain

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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1 answer

Study the diagram below and answer the questions that follow

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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1 answer

The grid below shows a part of the periodic table. The letters do not represent the actual symbols. Study it and answer the questions that follow.

asked Jul 27, 2021 in Chemistry Form 2 by anonymous

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