Oxygen and Oxides

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  • Created by: Ellie
  • Created on: 29-11-12 14:31
What's the percentage of Nitrogen in the air?
78.1%
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What's the percentage of Oxygen in the air?
21.0%
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What's the percentage of Argon in the air?
0.9%
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What's the percentage of Carbon Dioxide in the air?
0.04%
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When heating copper, which two changes occur?
Colour and Mass
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Metal + Oxide
--> Metal Oxide
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Non-Metal + Oxygen
--> Non-Metal dioxide
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What happens if a metal oxide dissolves?
It will form an alkaline solution.
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What happens when a non-metal oxides dissolves?
It will form an acidic solution.
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Which two non-metals form an acidic solution?
Hydrogen Oxide and Carbon Monoxide
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Why is CO2 used to put out fires?
It's denser than air and stops oxygen reaching flames.
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Which two things form Acid rain?
Sulphur dioxide and oxides of Nitrogen
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Where does acid rain evolve from?
Acid rain comes from volcanoes, powerstations, cars and fuels.
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Water + Oxygen + Sulphur dioxide
--> Sulphuric acid
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Thermal decomposition=
Metal carbonate + HEAT --> Metal oxide + Carbon dioxide
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Tests for water prescence: Anyhydrous copper sulfate (white powder)
--> Hydrated copper sulfate (blue crystals)
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Tests for water prescence: Anhydrous cobalt chloride paper (blue paper)
--> Hydrated cobalt chloride paper (pink paper)
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Test for pure water=
freezes at exactly 0 degrees and boils at exactly 100 degrees
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Other cards in this set

Card 2

Front

What's the percentage of Oxygen in the air?

Back

21.0%

Card 3

Front

What's the percentage of Argon in the air?

Back

Preview of the front of card 3

Card 4

Front

What's the percentage of Carbon Dioxide in the air?

Back

Preview of the front of card 4

Card 5

Front

When heating copper, which two changes occur?

Back

Preview of the front of card 5
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Qatriya_58'$

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u must show the answers as well..!

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