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Chemistry
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Why does graphite conduct electricity while diamond doesn't?

I'd start by asking the student what they knew about the structures of diamond and graphite, and asking them what they understood by the keyword "allotrope". If they were able to draw/ describe ...

Answered by Lauren P. Chemistry tutor
3338 Views

Explain why the atomic radius of elements decreases as you move across the periodic table from the left to the right

Periodicity:As you move across the row the atomic number increases, ie an additional proton is added for each additional element, this is what makes them different elements rather than isotopes of the sam...

Answered by Benjamin B. Chemistry tutor
1909 Views

Explain why cis- alkenes typically have a lower boiling point than trans alkenes.

Define cis and trans alkenes:Carbon to carbon single bonds can freely rotate to give a carbon chain that can take on a number of shapes (this is to do with the overlap of p - orbitals to ...

Answered by Benjamin B. Chemistry tutor
2578 Views

describe in terms of electrons what happens when magnesium oxide is formed from magnesium and oxygen atoms?

Magnesium in a metal, whereas oxygen is a non metal - therefore magnesium oxide is formed by an ionic bond (if it were 2 non metals it would be a covalent bond). It is important to understand that atoms p...

Answered by Maaedah K. Chemistry tutor
6936 Views

How can you distinguish between an endothermic reaction and an exothermic reaction based on temperature change of the surroundings.

In an exothermic reaction, energy is released from the system and into the surroundings, the system loses energy so the surroundings gain energy. The surroundings gain energy as heat and therefore there i...

Answered by Kuba S. Chemistry tutor
5761 Views

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