Question

two types of changes

Answer 1

The two types of changes are
Physical change: the change in shape, size or color of an object just merrily the appearance is the physical change
Chemical change: the change in chemical composition of an object or it structure is a chemical change

Answer 2

Heya!! Here is your answer!

$<b><i>⭐There are only two types of changes⭐$

These two types of changes are:

✨Physical change

✨Chemical change

Now,for your understanding,let me explain these to you.

$<b>✨A change in which no new substance is formed and which can be reversed by reversing the conditions is a Physical change.For example,freezing of water,melting of ice,melting of wax.etc.$

✨Now,all about Chemical change.A change in which new substances are formed and which cannot be reversed by reversing the conditions is a Chemical change.E.g.Burning of paper,Cooking of food,Digestion, Germination.etc.

⭐Remember,all chemical processes are Chemical changes.⭐

$<b><i>But,there are also some exceptions.I am giving you two examples from which you will get an idea of changes which are both Physical and Chemical.$

✨Burning of a candle.When we burn a candle,the wax melts and we can collect the wax and use it for manufacturing another candle.But on the other hand,the wick burns and forms a new substance-CO2(Carbon Dioxide) which is a chemical change.So,the burning of a candle is both a Physical and a Chemical change.

✨Another example of this is heating of sugar.If we heat sugar for some time,the product we will obtain can be reversed back
So,it's a Physical change.But,after hearing it for long,a new substance will form which is CARBON.This process is known as Charring of sugar which is a Chemical change.

✌️ Hope it helps you ✌️