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Topic 8 - Acids and Alkalis
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Elements burn in oxygen to form what?
Oxides
When a non-metal oxide dissolves in water an _______ solution is formed?
acidic
When a metal oxide dissolves in water an _______ solution is formed?
alkaline
What compound is formed when compounds containing the element sulphur are burned?
sulphur dioxide
Sulphur dioxide is one of the main causes of....?
acid rain
What can acid rain destroy?
Buildings made of limestone
Iron (steel) structures eg bridges
Acids have a ph of....?
less than 7
Alkalis have a ph of....?
more than 7
Neutral solutions have a ph of....?
7
All acidic solutions produce _______ gas at the negative electrode when the acid is electrolysed?
hydrogen
What ion is present in all acidic solutions?
Hydrogen - H
+
What ion is present in all alkali solutions?
Hydroxide - OH
-
What is the formula for hydrochloric acid?
HCl
What is the formula for sulphuric acid?
H
2
SO
4
What is the formula for nitric acid?
HNO
3
What is the formula for sodium hydroxide?
NaOH
What is the test for hydrogen gas?
It burns with a pop
What is the product when pure hydrogen is burned?
Water
In an acidic solution the number of hydrogen ions is _______ than the number of hydroxide ions?
greater
In an alkali solution the number of hydorxide ions is _____ than the number of hydrogen ions?
greater
In a neutral solution there are _____ numbers of hydrogen and hydroxide ions?
equal
What happens to the concentration of acidic and alkali solutions when they are diluted with water?
The concentration moves towards 7
When a metal oxide or a metal hydroxide dissolves in water what kind of solution is formed?
An alkaline solution
Author
Anonymous
ID
73828
Card Set
Topic 8 - Acids and Alkalis
Description
Standard Grade Chemistry - Topic 8 - Acids and Alkalis
Updated
2011-03-19T13:59:23Z
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