chemistry- chemical tests

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How do you test for group 1 metals?
Add to water and see if it reacts vigorously and produces a metal hydroxide + Hydrogen
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Why do group 1 metals become more reactive as you go down the group?
more electrons = more shells = fewer forces of attraction, making electrons more likely to transfer
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What observations can you make about Chlorine?
It is a green gas
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What observations can you make about Bromine?
Red-brown liquid
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What observations can you make about Iodine?
dark grey solid
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Halogens form which type of reaction?
Displacement
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What is the test for oxygen?
It will relight a glowing splint
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What colour flame is produced by Magnesium?
Bright white (MgO)
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What colour flame is produced by Calcium?
Brick red
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What colour flame is produced by Potassium?
Lilac
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What colour flame is produced by Sodium?
Orange
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What colour flame is produced by Lithium?
Red
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What is added to a solution when testing for metal ions?
Sodium Hydroxide (NaOH)
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When NaOH is added to Copper(II) ions what colour precipitate is formed
Blue
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When NaOH is added to Iron(II) ions what colour precipitate is formed
Green
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When NaOH is added to Iron(III) ions what colour precipitate is formed
Red-brown
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What is the test for ammonia?
Damp red litmus paper turns blue
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What is added when testing for carbonates (what shows that it is a carbonate)
Hydrochloric acid (It gives off CO2)
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What is added when testing for Sulfates (what shows that it is a Sulfate)
Barium Chloride (Produces a white precipitate)
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What is added when testing for Halides (what shows that it is a Halide)
Nitric acid then Silver Nitrate (Chloride gives a white precipitate, Bromide a cream coloured one, Iodide a yellow one)
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Test for Chlorine
Bleaches damp litmus paper white
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Test for CO2
Turns limewater cloudy
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Test for Hydrogen
BURNS with a squeaky pop
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What is added when testing for water (what shows that it is water)
Copper(II) Sulfate (Forms blue crystals)
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Other cards in this set

Card 2

Front

Why do group 1 metals become more reactive as you go down the group?

Back

more electrons = more shells = fewer forces of attraction, making electrons more likely to transfer

Card 3

Front

What observations can you make about Chlorine?

Back

Preview of the front of card 3

Card 4

Front

What observations can you make about Bromine?

Back

Preview of the front of card 4

Card 5

Front

What observations can you make about Iodine?

Back

Preview of the front of card 5
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