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Chemistry
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How does the ionisation energy differ across period 2 from Li to Ne?

The ionisation energy across a period increases as the effective nuclear charge increases but the shielding stays the same.

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What is a catalyst?

A catalyst lowers the activation energy of a reaction and therefore increases the rate of reaction. The catalysts reacts with the reactants but is regenerated again i...

Answered by Hannah G. Chemistry tutor
4212 Views

What do you get when you add an acid to a metal hydroxide?

If you add an acid to a metal oxide you get a salt and water.

For example: 

HCl + NaOH ---> NaCl + H2O

Answered by Jenny M. Chemistry tutor
4234 Views

What is nucleophile?

A nucleophile is a species which can donate a lone pair of electrons to an electron deficient species, known as an electrophile. By doing this, a chemical bond is formed.An example of a reaction involving...

Answered by Claire S. Chemistry tutor
7244 Views

What is chirality/optical isomerism?

Chirality (or optical isomerism) is a physical property of a molecule which has a non-superimposable mirror image. In other words, a molecule which, when reflected cannot be rotated in any way to make the...

Answered by Matthew W. Chemistry tutor
11512 Views

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