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Chemistry
GCSE

Describe the trend in reactivity in group 1 alkali metals.

Reactivity increases as you go down the group.

Answered by Zaynah Q. Chemistry tutor
1846 Views

What is an ion and how are they formed?

An ion can be an atom or a group of atoms that are charged. This means they can be positively charged or negatively charged.A positive ion is formed when the atom loses electrons. Because electrons have a...

Answered by Maisie D. Chemistry tutor
1824 Views

What is the trend of reactivity in group 1 metals?

As you go down group 1, the number of electron shells increases. This means that the outer electron is further from the attractive pull of the nucleus, and it experiences more shielding from the nucleus’ ...

Answered by Keshen P. Chemistry tutor
1990 Views

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...

Answered by Maddie R. Chemistry tutor
2359 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...

Answered by Lucy Erin S. Chemistry tutor
6517 Views

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