Particles of Matter Are Very Small

Q.

What is the meaning of volatile and non volatile ?

Q.

When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observaton tell us about the nature of potassium permanganate and water ?

Q.

Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characterstic of particle of matter is illustrated by this observation ?

Q.

when an incense stick is lighted in one corner of a room its fragrance spread in the whole room quickly . Which characteristics of the particle is illustrated by this observation

Q.

Look at the figure given below.

The increasing dilution of potassium permanganate solution with water fades the pink colour of the solution. This explains which property of matter?

1. Particles of matter occupy space

2. Matter is indivisible.

3. Particles of matter are in continuous motion

4. Particles of matter are very very small.

Q. Why do camphor go under sublimation?Why do only some matter go under tHis process?

Q.

What are the main difference s between sublimes and sublimates.

Q.

Potassium permanganate dissolves in water and forms a colorless solution.

1. True
2. False

Q. What kind of matter are humans made up of?

Q. 'Melt' is related to 'liquid' in the same way as freeze is related to
a) ice
b) crystal
c) water
d) cubes

Q.

How can you say that matter is made up of particles?

Q.

Why cannot you smell its perfume at a short distance when incense stick is not lighted ?

Q. What is mean by matter is made up of discrete particles?

Q.

What is sublimation plz explain!!! And why does a naphthalene ball disappears without leaving any solid or residue?

Q.

Which of the following is not true for a mixture?

1. A mixture can be separated into its constituents.

2. The composition of a mixture is variable.

3. Energy is not given out in the preparation of a mixture.

4. A mixture has a fixed melting point.

Q.

Why can you smell the perfume of incense stick ?

Q.

How is the rate of spreading of a solid in a liquid affected by the change in temperature?

Q. Can potassium permanganate sublime?

Q.

Which of the following does not have a fixed melting point/boiling point?

1. Sodium

2. Paint

3. Oxygen

4. Diamond

Q.

Which of the following is a substance according to scientific meaning: air, water, smoke, fog

Q. What is the difference between gas and vapour?

Q.

Three states of matter are the result of a balance between intermolecular forces and thermal energy of the molecules.

1. True

2. False

Q.

Why do naphthalene balls disappear with time without leaving any solid behind?

1. Due to boiling

2. Due to sublimation

3. Due to melting

4. Due to freezing

Q. The particles of matter move continuously in a straight path.

1. True
2. False

Q.

Hello, I have a doubt in chemistry.I want to ask that how a sublime substance like ammonium chloride, camphor directly convert into vapour from solid.

Q. One small crystal of potassium permanganate can colour large volume of water. This proves that ____________.

1. matter is made up of wave
2. matter is made up of tiny particles
3. matter is made up of large particles
4. matter cannot be divided further

Q. is phosporusan example of a sublimable substance

Q.

What happens when a beam of sunlight enters a dark room?

Q.

Differences between vapur and gas?

Q.

Give the characteristics of matter