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What trends are shown as you go down group 2 of the periodic table?

Group 2 (the alkaline earth metals) show many different trends. As you go down, the size of the atoms increases. This is due to the fact that each element has an extra full main level of electrons compared t...
Answered by • Chemistry tutor
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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 ne...
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Answered by Maisie D. • Chemistry tutor
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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’ att...
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Answered by Keshen P. • Chemistry tutor
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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 that when in liquid for...
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Answered by Maddie R. • Chemistry tutor
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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 solid is pur...
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