SCIENCE BETCH

Question 1

All particles of matter are constantly moving in a random
manner and this is known as ______________________________

Answer 1

Brownian Motion

Question 2

What is the movement of particles in a solid
(Name all 3)

Answer 2

• Held together by very strong forces of attraction
• Unable to move about freely
• Vibrate about in their fixed positions

Question 3

What is the arrangement of particles in a solid
(Name all 2)

Answer 3

• Packed very closely together
• A fixed, regular pattern

Question 4

What are the physical properties of a solid
(Hint: it is about shape, volume, density, and compression)
(Name all 5)

Answer 4

• Has a definite shape
• Have a definite volume
• Occupies the smallest volume
• Has a higher density than liquids
  and gases
• Cannot be compressed

Question 5

What is the movement of particles in a liquid
( Name all 2)

Answer 5

• Held together by strong forces of attraction
• Able to slide past one another

Question 6

What is the arrangement of particles in a liquid
(Name all 2)

Answer 6

• Packed closely together
• No fixed, regular pattern

Question 7

What are the physical properties of a liquid
(Hint: Something about Volume, Shape, Density, compression.)
(Name all 5)

Answer 7

• Has no definite shape
• Has a fixed volume
• Occupies more volume than solids
• Has a lower density than solids
• Cannot be compressed

Question 8

What is the movement of particles in a gas

Answer 8

• Held together by weak forces of attraction
• Able to move about freely over long distances

Question 9

What is the arrangements of particles in a gas

Answer 9

• Far apart from one another
• No fixed, regular pattern

Question 10

What are the physical properties in a gas
(Hint: Something about Volume, Shape, Density, compression.)
(Name all 5)

Answer 10

• Has no definite shape
• Have no definite volume
• Occupies the largest volume
• Has the lowest density
• Can be compressed

Question 11

Why Does a Solid Have a Fixed Shape? (Name all)

Answer 11

The particles of a solid
* are held together by very strong forces of attraction;
* vibrate about fixed positions;
* cannot move about freely.

Question 12

Why Does a Solid Have a Fixed Volume? (Name all)

Answer 12

A solid cannot be compressed because its particles are
already very close to one another.

Question 13

Why Does a Liquid Not Have a Fixed Shape? (Name All)

Answer 13

The particles of a liquid:
* are arranged in a disorderly manner;
* have weaker forces of attraction;
* are not held in fixed positions;
* can move freely throughout the liquid.

Question 14

Why Does a Liquid Have a Fixed Volume? (Name all)

Answer 14

The particles of a liquid are still packed quite closely
together.

Question 15

Why Does a Gas Not Have a Fixed Shape? (Name all)

Answer 15

The particles of a gas:
* are spread far apart from one another;
* have the weakest forces of attraction;
* can move about rapidly in any direction.

Question 16

Why Does a Gas Not Have a Fixed Volume?

Answer 16

Particles in gas are far apart from one another. There is
space for the particles to be compressed.

Question 17

Gaining heat results in ________________

Answer 17

Expansion

Question 18

Losing heat results in ________________

Answer 18

Contraction

Question 19

What happens to the particle during contraction

Answer 19

1m if say : The particles move closer to one another.
1m if say : This causes the volume of matter to decrease.
1m if say : The particles lose energy and vibrate less vigorously.

Question 20

What happens to the particles during expansion

Answer 20

1/2m if say: The particles move further.
1/2m if say: This cause the volume of matter to increase.
1m if say: This make the particles gain energy and vibrate more vigorously.

Question 21

What occurs to the mass of matter during expansion and
contraction?

Answer 21

The mass of matter does not change during expansion and
contraction.

Question 22

What occurs to the mass of matter during expansion and
contraction?

Answer 22

During expansion and contraction, the mass of a matter is
conserved.

Question 23

What happens to the matter during melting and boiling

Answer 23

1m if say: the particles gain energy and vibrate more vigorously.
1m if say: they overcome the strong forces of attraction between one another. The particles break free from one another and move randomly.

Question 24

What happens to the matter during freezing and condensation

Answer 24

1m if say: the particles lose
energy and move much
slower.
1m if say: they cannot overcome the forces of attraction between one another. The particles move closer to one another and move less randomly.

Question 25

What is diffusion in particles

Answer 25

Diffusion is the net movement of particles from a region of
higher concentration to a region of lower concentration.

Question 26

What is an atom

Answer 26

Atom is the smallest unit of an element