13-19 chemistry

Question 1

What is the arrangement of particles in a solid?

Answer 1

The particles are very close together in an ordered arrangement
The particles vibrate in a fixed position
The particles have very strong forces between them

Question 2

What is the arrangement of particles in liquid?

Answer 2

The particles are close together
The particles are free to move below the surface
The particles vibrate and move round each other
The particles have quite strong forces between them

Question 3

What is the arrangement of particles in a gas?

Answer 3

The particles are far apart in a random arrangement
The particles are free to move anywhere
The forces between the particles are weak

Question 4

Describe the arrangement of particles in a solid, liquid and gas

Answer 4

Solid - very close together, regular arrangement
Liquid - close together, random arrangement
Gas - far apart, random arrangement

Question 5

Describe the motion of particles in a solid, liquid and gas

Answer 5

Solid - vibrates about a fixed position
Liquid - moves around each other
Gas - moves quickly in all directions

Question 6

Describe the properties of a solid, liquid and gas

Answer 6

Solid - definite shape, definite volume, not compressible
Liquid - takes the shape of container, definite volume, not compressible
Gas - does not stay in an open container, spreads out to fill available volume, volume depends on container, compressible

Question 7

How can a substance change its state?

Answer 7

When the particles of a substance gains or loses energy, the substance may change its state