Question

0.5-Define acid and write the name of two acids.
0.6-Write the characteristic of a chemical reaction.​

Answer 1

Answer:

(5)

ACID- An acid is the liquid which hai it's Ph value less than 7 .

EX- HCl and HNo3 are examples of two acids

(6)

CHARACTERISTICS

• heat energy is evolved .

• change in colour .

•change in tempereture.

• evolution of gas

Answer 2

1) Acid is a substance with sour taste, more H+ ions present, turns Blue to Red litmus.

Name of two acids:-

*HCl (Hydrochloric acid).

* HNO3 (Nitric acid).

2) Characteristics of a Chemical Reaction are:-

* Evolution of [G]as.

* Change in [S]tate.

* Change in [T]emperature.

* Light Emissi[on].

* Formation of [P]recipitate.

* Change in [C]olour.

Code to remember characteristics of Chemical Reaction, use, [G], [S], [T], [on], [P], [C].