Recent questions in Chemistry Form 2

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Hydrogen Sulphide gas was bubbled into two solutions of metallic nitrates as shown in the flow diagram below

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

Determine the number of neutrons in 1818O

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

What are isotopes?

asked Aug 17, 2021 in Chemistry Form 2 by anonymous

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1 answer

Balance the following chemical equations

asked Aug 6, 2021 in Chemistry Form 2 by anonymous

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Two elements M and N have atomic numbers 17 and 20 respectively. Write the formula of the compound formed when M and N react.

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

The table below shows the atomic numbers of four elements W,X,Y and Z

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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2 answers

Elements X and Y have atomic numbers 11 and 17 respectively. Which one of the elements is a metal? Give a reason for your answer.

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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An element B consists of three isotopes of mass, 28, 29 and 30 and percentage abundances of 92.2, 4.7 and 3.1 respectively. Show that the relative atomic mass of element is 28.11

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

An element, A, has 30 protons and 35 neutrons. What is

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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3 answers

Name two other substances that behave as dry ice

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Carbon (IV) sublimes at -78ºC. It is called dry ice

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Define the following terms: Electron affinity

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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2 answers

Define the following term: Ionization energy

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Define the following term: Isotope

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Define the following: Ion

asked Aug 5, 2021 in Chemistry Form 2 by anonymous

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1 answer

Give the valency of each of the elements or radical in the following chemical compounds.

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

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The table below gives the number of protons and neutrons in element G,H,I and J.

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

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1 answer

Explain why is not suitable to have a

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

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1 answer

Carbon Oxide gas was passed over heated iron III Oxide as shown in the diagram below

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

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1 answer

Explain why aluminum is a better conductor of electricity than Sodium

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

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