Question

50 new words related to matter around us pure

Answer 1

Answer:

$\huge\mathfrak\red{Answer ⤵}$

We come across different substances like water that we drink; salt that we add in food for taste, milk that we drink as it provides us with calcium and other minerals, soaps that we use to wash clothes, paint that we use to colour walls and so on. These substances have different nature, different properties. They can be pure or there can be some impurities in them. Let us see what do we understand by the words pure or impure substances.

Pure substance -

They are substances that are made up of a single type of particle. But there are certain characteristics that determine the purity of a substance. Let us see what all properties they possess. Characteristics of a pure substance are as follows-

They all have a uniform composition ( homogeneous).

They can not be separated into their constituents.

They have fixed melting and boiling points.

They always have the same characteristic properties.

Two categories of substances fall under pure substance. They are as follows-

-Elements

-Compounds

Explanation:

Hope this may help you !!....

Answer 2

Explanation:

ANSWER ✍️

This article brings you the CBSE Class 9 Science notes on chapter 2 - Is Matter Around Us Pure (Part-I). These chapter notes are prepared by the subject experts and cover every important topic from the chapter. In between these notes you can try the questions asked from the discussed set of topics. These questions will help you to track your preparation level and get a hold on the subject.

Key notes for Chapter- Is Matter Around Us Pure, are:

______________________

______________________

Matter

Anything which has mass and occupies space is called matter. It may be solid, liyquid or gas.

Types of Matter

_____________________

It is of two types :

1. Pure Substance

2. Impure substance

Pure Substance: It may be defined as a material which contains only one kind of atoms or molecules.

Pure substances are again of two types:

element and compound

Hope this helps you꧂