Solve

Guides

0

You visited us 0 times! Enjoying our articles? Unlock Full Access!

Question

What is meant by a chemical reaction? Explain with the hekp of an example.

Open in App

Solution

Verified by Toppr

Chemical reactions are the processes in which new substances with new properties are formed.

Example: When magnesium ribbon is heated, it burns in air to form a white powder called magnesium oxide.

$$Mg + \cfrac 12 O_2 \to MgO$$

Was this answer helpful?

9

Similar Questions

Q1

Answer the following questions.

(a) Name the different types of chemical reaction.

(b) Explain the difference between a combination and dissociation reaction.

(c) Explain with examples what is meant by oxidation.

(d) Explain with examples what is meant by reduction.

(e) What is a catalyst?

(f) On what factors does the speed of chemical reactions depend?

View Solution

Q2

(a) What is meant by chemical reaction? Explain with the help of an example.
(b) Give one example each of a chemical reaction characterised by:
(i) evolution of a gas
(ii) change in colour
(iii) formation of a precipitate
(iv) change in temperature
(v) change in state.

View Solution

Q3

What is a chemical reaction? Explain with an example.

View Solution

Q4

With the help of an example, explain what is meant by a pseudo-first-order reaction.

View Solution

Q5

With the help of an example explain what is meant by pseudo first order reaction.

View Solution