Question 1

Anything that occupies space and has mass is called:

Accepted Answer

matter. Matter is anything that has mass and occupies space (volume).

Question 2

When a spoon of sugar dissolves in water without overflowing, it shows that:

Accepted Answer

particles of matter have spaces between them. Sugar particles fit into the spaces between water particles, so the level barely changes.

Question 3

The spreading of the smell of perfume across a room is evidence that particles of matter:

Accepted Answer

are continuously moving. Diffusion of perfume shows particles are in constant random motion and mix with air particles.

Question 4

Diffusion is fastest in:

Accepted Answer

gases. Gas particles move fastest and are farthest apart, so diffusion is quickest in gases.

Question 5

The random zig-zag motion of tiny particles suspended in a fluid, seen under a microscope, is called:

Accepted Answer

Brownian motion. Brownian motion is the erratic movement of suspended particles caused by collisions with fast-moving fluid particles.

Question 6

Solids, liquids and gases differ mainly in the:

Accepted Answer

arrangement and movement of their particles. The three states differ in how closely packed and how freely moving their particles are.

Characteristics of Matter — Homi Bhabha Exam Chemistry MCQs with Solutions

Questions with solutions