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Science - Acids and Bases
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List the properties of acids
Acids turn blue litmus paper red
Acids have a pH less than 7
Acids have a sour taste
Give examples of acids
Lemon juice
Coke
Vinegar
Hydorchloric Acid
Sulphuric Acid
List the properties of bases
Bases turn red litmus paper blue
Bases have a pH greater than 7
Bases have a soapy feel
State examples of bases
Toothpaste
Bleach
Washing soda
Sodium hydroxide
Calcium hydroxide
What is an alkali?
This is a base that dissolves in water eg. washing powder
State the function (job) of an indicator
To tell us if the solution is an acid or a base
What is a neutral substance?
These are substances that do not behave like acids or bases
What is the pH Scale?
This is used to measure the strength of an acid or a base
State whether a solution is neutral, acidic or basic when a solution has a pH greater than 7
Base
State whether a solution of neutral, acidic or basic when a solution has a pH of 7
Neutral
State whether a solution is neutral, acidic or basic when a solution has a pH less than 7
Acid
State the two types of indicators?
1. Litmus Indicator
2. Universal Indicator
What is litmus indicator?
This will change colour if the solution is an acid or a base
It does not show how strong the acid or base is
What colour change is observed when litmus paper is put into an acid?
It changes from blue to red
What colour change is observed when litmus paper is put into a base?
It changes from red to blue
What is universal indicator?
This is a mixture of dyes that changes colour depending on how concentrated an acid or a base is
It shows the pH of the acid or base
Author
mshowley
ID
149999
Card Set
Science - Acids and Bases
Description
Acids and Bases
Updated
2020-06-19T21:54:56Z
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