Physics acids & alkalis Flashcards
What has a PH of 1
Stomach acid
What has a PH of 2
Lemon
What has a PH of 3
Vinagar
What has a ph of 4
Tomatoes
What has a ph of 5
Coffee
What has a ph of 6
Milk
What has a ph of 7
Water
What has a ph of 8
Blood
What has a ph of 9
Baking soda
What has a ph of 10
Stomach tablets
What has a ph of 11
Ammonia solution
What has a ph of 12
Soap
What has a ph of 13
Bleach
What has a ph of 14
Drain cleaner
What is pH 7 called
Neutral
Ph below 7
Acid
What is pH above 7
Alkali
What has a ph of 0
Battery
What is a sting from a bee
Acid
What is a sting from a wasp
Alkaline
What is a base
Something that neutralises an acid
Are bases soluble in water
Yes
What is a soluble base
An alkaline
Independent variable
One you change
Dependent variables
One that’s measured
Control variables
One that is kept the same
Calcium chloride magnesium nitrate and copper sulfate are all
Salts
What is a salt
A compound
Acid + base ->
Salt + water
Acid+ metal ->
Salt + hydrogen
Acid + metal carbonate ->
Salt + carbon dioxide +water
What part of the salts name does metal give
First
What part of the salts name does the salt give
Second
Start of the equation =
Reactants
End of the equation
Product
Ending in ide means what
Only contains 2 elements
Ending in ate or ite means what
3 or more oxygen always 1
Most reactivate half
Potassium sodium calcium magnesium aluminium carbon zinc iron
Least reactive half
Tin lead hydrogen copper silver gold platinum
When does blue litmus paper change it’s colour when it is put in acid neutral or alkali
Acid it turns red
When does red lipmas paper change its color when it has been put in acid neutral or alkali
Alkali it turns blue
What does pH stand for
Potential for hydrogen
