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Chemistry
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How does electrolysis work?

Electrolysis is essentially the movement of charged ions in a solution.For example, take sodium chloride, NaCl. NaCl is the electrolyte. The electrolyte is a substance, usually a salt tha...

MR
Answered by Maddie R. Chemistry tutor
3251 Views

A student carries out an experiment to determine the melting point of a waxy solid. She heats a sample until it melts, then measures and records its temperature as it cools down. Explain how the student could use her results to decide whether the waxy

...solid is a pure substance or a mixture.
Firstly, she would need to plot a graph of temperature against time. Temperature remains constant at the melting point. The graph will show whether the sol...

LE
7559 Views

Look at this diagram of a methane molecule. Which statement about methane is correct? - A) Electrons are transferred from hydrogen atoms to carbon atoms. - B) The covalent bonds in methane are weak.

(didn't fit:)C) The force of attraction between methane molecules is weak. D) The ionic bonds between carbon and hydrogen are very strong.Answer: C

SK
Answered by Shivani K. Chemistry tutor
4984 Views

Please describe how temperature, concentration and the use of a catalyst affects rate of reaction.

For a reaction to be successful two atoms need to collide with a sufficient amount of energy (activation energy). Raising the temperature increases the amount of kinetic energy that the atoms have, which ...

GS
Answered by Georgie S. Chemistry tutor
2817 Views

Explain the principle behind chemically reactive and inert molecules

Electronegativity.
Molecules with atoms which possess an almost full outer shell will always be seeking to draw in the extra electron(s) to fill up their outer shells.Likewise molecules with atoms wh...

IS
Answered by Irtiza S. Chemistry tutor
2767 Views

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