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S2 Chemistry > Module 4 > Flashcards

Module 4 Flashcards

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1
Q

What colour of flame does copper make?

A

Blue-green flame

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2
Q

What colour of flame does barium make?

A

A green flame

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3
Q

What colour of flame does sodium make?

A

Orange flame

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4
Q

What colour of flame does calcium make?

A

Orange-red flame

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5
Q

What colour of flame does Potassium make?

A

Lilac flame

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6
Q

What colour of flame does strontium make?

A

Red flame

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7
Q

What colour of flame does lithium make?

A

Red flame

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8
Q

What is the test for carbonates?

A

Carbonates react with acids to produce CO2 (test by making lime water cloudy)

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9
Q

What is the word equation for when a metal reacts with acid?

A

metal + acid ➡️ salt + hydrogen

Example: magnesium + hydrochloric acid ➡️ magnesium chloride + hydrogen gas

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10
Q

What is the test for sulfates/ites?

A

If a precipitate is made using barium chloride

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11
Q

What are halides?

A

Compounds which contain an element joined to a halogen.

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12
Q

What is the test for halides?

A

Using silver nitrate to give a precipitate. Chlorides gives white, bromides give “cream” and iodides give “yellow”

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13
Q

What is chromatography used for?

A

Used to identify and separate chemicals from mixtures

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14
Q

How do you interpret a chromatogram?

A

You go across from the substances on the side and you see which substances line up and match

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15
Q

What is another test for metals?

A

We can use sodium hydroxide to various solutions that contain ions.

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16
Q

What colour will an iron ion turn when sodium hydroxide is added?

A

Green/brown

17
Q

What colour will copper turn when added to sodium hydroxide?

A

Blue

18
Q

What colour will magnesium turn when added to sodium hydroxide?

A

Cloudy white

19
Q

What colour will Aluminium turn when added to sodium hydroxide?

A

Cloudy white

20
Q

What is an alloy?

A

It’s a metal mixed with other elements.

S2 Chemistry (4 decks)

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