Sample paper of Chapter- IS Matter around us pure https://drive.google.com/file/d/1LT9d4-S211EmTtNcKdGEUqBejodMBkM-/view?usp=drivesdk <br /><br /> Chapter- Matter in our surrounding video Link - https://dai.ly/x7oxw7v<br /><br /><br />YouTube Channel Link - https://www.youtube.com/channel/UCjClczBJBKgpOSlGzx813gA<br />
