Chap 05_5-2: Form 2
3
Chapter 5.2 Composition of Water Water is a chemical compound that made up of two atoms of hydrogen and one atom of oxygen The ratio of hydrogen to oxygen is 2:1 Oxygen atom Hydrogen atom Hydrogen atom 1 © Amazing Tunas Enterprise (001573407-U) TRG ± Sci ence Form 2 Chapter 5 : Water and Solutions
Transcript of Chap 05_5-2: Form 2
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Chapter
5.2 Composition of Water
Water is a chemical compound that made up of two atoms of hydrogen
and one atom of oxygen
The ratio of hydrogen to oxygen is 2:1
Oxygen atom
Hydrogen atom Hydrogen atom
1
© Amazing Tunas Enterprise (001573407-U)TRG ± Science Form 2
Chapter 5 : Water and Solutions
8/8/2019 Chap 05_5-2: Form 2
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Chapter
5.2Composition of Water
The electrolysis of water
platinum
electrode
(anode)
platinum
electrode
(cathode)
acidified
water
Oxygen is
collected at
anode
Hydrogen is
collected at
cathode
2
© Amazing Tunas Enterprise (001573407-U)TRG ± Science Form 2
Chapter 5 : Water and Solutions
8/8/2019 Chap 05_5-2: Form 2
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Water can be break up into hydrogen and oxygen through the process of
electrolysis
In the process of electrolysis, oxygen is discharged at the anode
(positive electrode) and hydrogen is discharged at the cathode (negative
electrode)
Oxygen is tested with a glowing wooden splint. The wooden splint lights
up when oxygen is present
Hydrogen is tested with a lighted wooden splint. µPop¶ sound is produced
when hydrogen is present
Q.R.
5.2 Quick Refresh
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© Amazing Tunas Enterprise (001573407-U)TRG ± Science Form 2
Chapter 5 : Water and Solutions
