Question

II. Fill in the blanks.
1.
is a chemical that changes its colour to indicate the presence of a chemical substance.
2.
are substances that have a sour taste.
3. Rain containing excess of acid is called
4.
are substances that taste bitter and feel slippery to the skin.
5.
and
are examples of naturally occurring indicators.
6. When an acidic solution is mixed with a basic solution, they
each other forming
and water.
​

Answer 1

Answer:

5)red litmus and blue litmus

3)acid rain

2)bases

not sure about others

Answer 2

Explanation:

1.

2.acids

3.acid rain

4.bases

5. turmeric, hibiscus

6.salt and water