Kinetic theory and density

Question 1

explain the particle arrangement in solids

Answer 1

strong forces of attraction holding close together in regular shape no energy only vibrate around fixed points

fixed shape and volume

Question 2

explain the arrangement of particles in liquids

Answer 2

forces of attraction are weaker and flow over each other have more kinetic energy and move on random directions and low speeds

Question 3

explain the arrangement of particles in gas

Answer 3

no forces of attraction more energy in kinetic energy and free to move fast speeds

no fixed shape

Question 4

what happens when you use thermal heat on substance

Answer 4

energy is transferred to kinetic energy store causing it to move faster and eventually overcome attraction and boil.

in solids vibrate quicker

Question 5

how can you find density of liquid

Answer 5

use mass balance measure mass of empty measuring cylinder
then measure mass with liquid, difference is mass

volume read of cylinder

Question 6

how can you find density of irregular shaped solid

Answer 6

submerge in water water displaced = volume of object

using eureka fill till spout
Place an empty measuring cylinder below its spout
Carefully lower the object into the eureka can
Measure the volume of the displaced water in the measuring cylinder

Question 7

describe the density of solid liquid and gases

Answer 7

solids are most dense as particles most closely packed but gas least as volume changes and far apart