Question

10 th class chemistry 1.3 activity how done this Activity plzz btao jldi

Answer 1

In that there will be <change in state,
<change in colour,
<change of a gas,
<change in
temperature........

Answer 2

Activity 1.3 Class 10 science ncert

Aim : Observing the characteristics indicators for the chemical reaction

Apparatus :  

Conical flask

Zinc granules

conc. HCl

rubber cork

glass tube

Procedure :  

Take a few Zinc granules in a conical flask

Add diluted HCl acid to this conical flask.

Observation :

we observe that when Zinc reacts with acid it gives zinc chloride and Hydrogen gas.

Balanced chemical reaction :

Zn (s)+ 2HCl(l)------------> ZnCl₂(aq)  + H₂(g)+ heat

Here we can observe that chemical reaction has occurred as two things we can see

evolution of gas

exothermic reaction- heat is released