NCERT Solutions Chapter 1 Matter in Our Surroundings

The mass per unit volume of a substance is called density. (density = mass/volume).Arrange the following in order of increasing density – air, exhaust from chimneys, honey, water, chalk, cotton and iron.

The order from lowest to highest density would be: Air, Exhaust from chimneys, Cotton, Water, Honey, Chalk, Iron.

The mass per unit volume of a substance is called density. (density = mass/volume).Arrange the following in order of increasing density – air, exhaust from chimneys, honey, water, chalk, cotton and iron. Read More »

A diver is able to cut through water in a swimming pool. Which property of matter does this observation show?

Fluidity refers to the ability of a substance to flow and change shape when subjected to an external force. Liquids, such as water in this case, exhibit fluidity because their particles can move past each other relatively easily while still maintaining some cohesive forces.

A diver is able to cut through water in a swimming pool. Which property of matter does this observation show? Read More »

Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume.

Matter is anything that has mass and takes up space. Based on this definition, the items that are matter in the given list are: Chair, air, almonds, cold, lemon water, and smell of perfume. The rest (love, smell, hate, thought) are abstract concepts and do not have mass or occupy space in the same way that physical objects do.

Which of the following are matter? Chair, air, love, smell, hate, almonds, thought, cold, lemon water, smell of perfume. Read More »