Question

Observation :
Sr.No. Experimental procedure
Obsertvations
1 Note the heat absobed or evolved during
the reaction by touching the dish.
2 Note whether a gas or vapour is given
away in the reaction.
3 Note the noise, if, any, produced during
the reaction.
4 Note the change in the physical state​

Answer 1

1. When a dish which has been heated is touched, heat gets absorbed and the temperature of the thing being touched with increases. This is a physical change or chemical reaction which is known as exothermic reaction.
2. Endothermic reactions will give out gases. and, Exothermic reactions will give out vapours.
3. Hey mate!! A hissing sound will produce during the reaction , because it is an exothermic reaction
4. Changes of state are physical changes in matter. They are reversible changes that do not involve changes in matter's chemical makeup or chemical properties. Common changes of state include melting, freezing, sublimation, deposition, condensation, and vaporization.

Explanation:

Here is your answer

Mark me as brainliest

Answer 2

Answer:

1.A large around of heat is generated during reaction. 2.Co2 gas released. 3.Hizzing sound produced. 4.solid calcium oxide and liquid water gives equetion solution calcium hydroxide.