Top answers

Describe and explain the changes between sulphuric acid with copper carbonate, connected to a test tube with limewater.

The limewater turns cloudy (due to formation of C0 2 )Solution fizzes/effervescesSolution turns blue
PH
Answered by Prav H. • Chemistry tutor
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Describe the relationship between the number of carbon atoms in an alkane molecule and its boiling point.

As the number of carbon atoms increases, the boiling point increases.
PH
Answered by Prav H. • Chemistry tutor
8422 Views

What is ionic bonding?

It is a type of bonding where there is an electrostatic attraction between negative charged ions and positive charged ions. In this way atoms chemically combine, to produce a compound.
PM
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How would you carry out a flame test and what colours would Li+, Na+, K+ and Ca2+ ions form?

Use a clean platinum wire loop. To clean the loop, dip in dilute HCl and hold in flame until the flame burns without any colour. Then dip clean loop into samples. Li+ turns the flame red, Na+ yellow\orange f...
RP
Answered by Rosie P. • Chemistry tutor
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When do halogens displace each other in solutions of their salts?

More reactive halogens displace less reactive halogens. The more reactive halogens are those at the top of the group, as their outer electron shells (negatively charged) are closer to the nucleus (positively...
AP
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