3. The pH Scale, Properties of Acids and Bases. Flashcards
1
Q
What does pH stand for?
A
pH stands for the power of hydorgen.
2
Q
What does pH mesaure?
A
pH measures the amount of hydorgen in a substance ot determine if it is an acid or a base.
3
Q
Acids have a pH of
A
7 or less.
4
Q
Bases have a pH of
A
7 or more.
5
Q
The sour taste belongs to
A
an acid.
6
Q
The bitter taste belongs to
A
a base.
7
Q
Litmus paper the colour of blue will turn
A
red when an acidic substance is dropped onto it.
8
Q
Litmus paper the colour of red will turn
A
blue when a basic substance is dropped onto it.
9
Q
When magnesium is dropped into a test tube of acid …
A
there is a release of hydrogen, as indicated by the pop made when gas is trapped and then a lit taper is placed near the mouth.
