Identifying Ions Flashcards

0
Q

What colour does potassium burn as

A

Lilac

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1
Q

Ionic compound contains

A

A positive ion (metal)

A negative ion (non metal)

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2
Q

What colour does copper burn as

A

Blue then green

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3
Q

What colour does sodium burn as

A

Orange

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4
Q

What colour does calcium burn as

A

Dark orange

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5
Q

What colour does strontium burn as

A

Orange red

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6
Q

What colour does lithium burn as

A

Bright red

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7
Q

Why do chemicals burn as different colours

A

To do with the electrons in them moving around- when they collide they give of different amounts of energy which produces different amounts of light energy

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8
Q

Why is heat needed to make chemicals’ colours visible

A

Electrons gain enough energy to collide and give off light energy

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9
Q

Identifying cations and metal ions

A

Adding it to sodium hydroxide

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