Test on States of Matter

Question 1

What is the shape of an atom?

Answer 1

Spherical

Question 2

What does an atom consist of ?
Draw it?

Answer 2

Three types of particles(sub-atomic particles)
proton, neutrons, electrons

Question 3

Which sub-atomic particle is positively charged?

Answer 3

Protons

Question 4

Which sub-atomic particle has no charge?

Answer 4

Neutrons

Question 5

Which sub-atomic particle is negatively charged?

Answer 5

Electrons

Question 6

Explain 3 pieces of evidence that matter is made up of tiny particles.

Answer 6

1. Brownian Motion
2. Diffusion
3. Osmosis

Question 7

What is Diffusion?

Answer 7

Diffusion is the movement of particles from an area of high concentration to an area of low concentration until the particles are evenly distributed.

This process occurs in both GASES and LIQUIDS

Question 8

What is Osmosis?

Answer 8

Osmosis is the movement of water particles from an area of high water concentration to an area of low water concentration, through a semi-permeable membrane.

Question 9

Describe an experiment to explain Osmosis.

Answer 9

You should notice that the level of liquid in the thistle funnel rose.

This occurred because the water particles moved from an area of high concentration inside the funnel.

The semi-permeable membrane has very tiny pores. These are big enough for water particles to pass through but too small for the larger sugar particles to pass through.

Question 10

Describe an experiment to show diffusion.

Answer 10

In the experiment, there was a high concentration of food coloring particles in the drop of food coloring.

The particles diffused from this area of high concentration to distribute themselves evenly in the beaker of water.

Question 11

Describe an experiment with Diffusion in GASES.

Answer 11

Diffusion can also be observed in gases.

When a jar filled with brown bromine vapour is allowed to mix with another jar containing air particles, bromine vapour spreads into the two jars. (Figure 1.2.)

Particles of bromine move from a high concentration to a low concentration until they are evenly distributed.

Question 12

Describe an experiment showing the Brownian Motion.

Answer 12

In 1827, the botanist Robert Brown using a high-powered microscope observed the CONSTANT IRREGULAR MOTION OF POLLEN FLOATING ON WATER.

He called this Brownian Motion.

This motion can be explained in terms of kinetic theory.

Air and water particles are constantly moving.

Question 13

Three factors that affect the rate of diffusion?

Answer 13

1. If the water or substance

Question 14

The particulate model of matter states?

Answer 14

That matter is made up of small discrete particles and that the discrete particles in matter are in constant and random motion.

Question 15

Answer 15

B

Question 16

Answer 16

liquid to gas

Question 17

Answer 17

Condensation

Question 18

Answer 18

B

Question 19

Answer 19

B

Question 20

Answer 20

C

Question 21

Answer 21

C

Question 22

Answer 22

D

Question 23

Answer 23

Evaporation and diffusion

Question 24

Answer 24

D

Question 25

Answer 25

DIFFUSION

Question 26

Answer 26

C

Question 27

Answer 27

B

Question 28

Answer 28

D

Question 29

Answer 29

B

Question 30

Answer 30

C

Question 31

Answer 31

C

Question 32

Question 33

Answer 33

D

Question 34

Answer 34

D

Question 35

Answer 35

D

Question 36

Answer 36

DIFFUSION

Question 37

Answer 37

C

Question 38

A. turgid
B. Flaccid
C. ISOTONIC
D.PLASMOLYZED

Answer 38

TURGID

Question 39

Answer 39

D