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Year 2 Chemistry OCR A level > General revision > Flashcards

General revision Flashcards

1
Q

What gives a violet colour if shaken with organic solvent

A

Iodine

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2
Q

What are the conditions when chlorine reacts with sodium hydroxide to form bleach

A

Cold and dilute

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3
Q

The reactivity of group 2 elements increases down the group, explain why (3 marks)

A

Increasing size:
Atomic radius increases
OR
more shells
OR
more (electron) shielding

Attraction
Nuclear attraction decreases
OR
(outer) electron(s) experience less attraction

Ionisation energy
Ionisation energy decreases
OR
less energy needed to remove electron(s)

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Year 2 Chemistry OCR A level (16 decks)

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