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Chemistry
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why do ionic compounds conduct electricity when in molten state or solution but not when solid?

this is because ionic compounds have positive and negative ions that are only allowed to move when the compound is liquid or when dissolved in solution. in solid state they are in their fixed position and...

MR
Answered by Muzaina R. Chemistry tutor
10546 Views

Use your own knowledge to compare and contrast the physical and chemical properties of Transition metals and group 2 elements. Use examples to explain your answer.

Answer: Students should be able to list the typical properties of transition metals Physicalhigh melting point / DensityFormation of coloured compoundsFormation of ions w...

CK
Answered by Chris K. Chemistry tutor
2594 Views

Excess KCN(aq) is added to a solution of [Co(H2O)6]2+. Identify the complex ion formed and predict its shape and charge.

[Co(CN)6]4-CN has -1 charge so overall charge is -4. CN- is similar sized ligand to H2O so shape is unchanged and remains octahedral.

JJ
Answered by Jack J. Chemistry tutor
4017 Views

Could you explain why water has a high latent heat of vapourisation?

A water molecule is polar. Due to the uneven sharing of electrons in the hydrogen-oxygen covalent bond, the oxygen molecule is slightly negatively charged and the hydrogen atoms are slightly positively ch...

SJ
Answered by Steffan J. Chemistry tutor
6199 Views

Why do I have to learn about electron shells.

This knowledge may not help you become good at your job in the future, but it is critical knowledge for everyone to have. electrons exist in certain energy levels around the atom. When an atom is hit by a...

AM
Answered by Alireza M. Chemistry tutor
2244 Views

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