Physics acids & alkalis Flashcards
1
Q
What has a PH of 1
A
Stomach acid
2
Q
What has a PH of 2
A
Lemon
3
Q
What has a PH of 3
A
Vinagar
4
Q
What has a ph of 4
A
Tomatoes
5
Q
What has a ph of 5
A
Coffee
6
Q
What has a ph of 6
A
Milk
7
Q
What has a ph of 7
A
Water
8
Q
What has a ph of 8
A
Blood
9
Q
What has a ph of 9
A
Baking soda
10
Q
What has a ph of 10
A
Stomach tablets
11
Q
What has a ph of 11
A
Ammonia solution
12
Q
What has a ph of 12
A
Soap
13
Q
What has a ph of 13
A
Bleach
14
Q
What has a ph of 14
A
Drain cleaner
15
Q
What is pH 7 called
A
Neutral
16
Q
Ph below 7
A
Acid
17
Q
What is pH above 7
A
Alkali
18
Q
What has a ph of 0
A
Battery
19
Q
What is a sting from a bee
A
Acid
20
Q
What is a sting from a wasp
A
Alkaline
21
Q
What is a base
A
Something that neutralises an acid
22
Q
Are bases soluble in water
A
Yes
23
Q
What is a soluble base
A
An alkaline
24
Q
Independent variable
A
One you change
25
Dependent variables
One that's measured
26
Control variables
One that is kept the same
27
Calcium chloride magnesium nitrate and copper sulfate are all
Salts
28
What is a salt
A compound
29
Acid + base ->
Salt + water
30
Acid+ metal ->
Salt + hydrogen
31
Acid + metal carbonate ->
Salt + carbon dioxide +water
32
What part of the salts name does metal give
First
33
What part of the salts name does the salt give
Second
34
Start of the equation =
Reactants
35
End of the equation
Product
36
Ending in ide means what
Only contains 2 elements
37
Ending in ate or ite means what
3 or more oxygen always 1
38
Most reactivate half
Potassium sodium calcium magnesium aluminium carbon zinc iron
39
Least reactive half
Tin lead hydrogen copper silver gold platinum
40
When does blue litmus paper change it's colour when it is put in acid neutral or alkali
Acid it turns red
41
When does red lipmas paper change its color when it has been put in acid neutral or alkali
Alkali it turns blue
42
What does pH stand for
Potential for hydrogen
