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Chemistry > YR 12 Metals with water and steam > Flashcards

YR 12 Metals with water and steam Flashcards

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1
Q

Equation

A

Metal+Water=Metal Hydroxide+Hydrogen

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2
Q

Potassium

A

-lilac flame
-heat released
-bubbles
-colourless solution produced
-metal disappears completely

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3
Q

calcium

A

-bubbles
-heat
-sinks then rises
-colourless with white precipitate
-metal disappears slowly

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4
Q

Magnesium

A

-few bubbles

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4
Q

Sodium

A

-Orange flame
-bubbles
-heat
-colourless solution
-metal disappears at the end

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4
Q

Test for hydrogen

A

Place a splint into the test tube. If there’s a pop then hydrogen is present.

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4
Q

Why are sodium and potassium stored under oil

A

To prevent them from reacting with oxygen or moisture in air

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Chemistry (11 decks)

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