1
Q
The special dye that can tell you how strong or weak and acid or alkali is named…
A
universal indicator
2
Q
What colour does universal indicator turn in a neutral solution?
A
Green
3
Q
What colour does universal indicator turn in a strong acid?
A
Red
4
Q
What colour does universal indicator turn in a strong alkali?
A
Purple
5
Q
If universal indicator turns yellow the substance is a…
A
weak acid
6
Q
If universal indicator turns blue the substance is a…
A
weak alkali
7
Q
The scale used to measure the strength of an acid or alkali is called the _____
A
pH scale
8
Q
pH 1-6 are all
A
acidic
9
Q
pH 7 is
A
Neutral
10
Q
pH 8-14 are all
A
alkali
Chapter 4 - Be Reactive
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