- 1. When heated, its particles gain energy andvibrate faster

- 2. Strong forces of attraction which hold themtogether weakens and cannot hold themtogether as tight.

- 3. The particles move further away from oneanother.

- Same process but the particles change intogaseous state without going through the liquidstate.

- 1. When losing heat, its particles lose energy.

- 2. The particles will then move slower as theforces of attraction strengthens.

- 3. The particles will then move closer together.

- 1. When liquid particles are heated, it gainsenergy.

- 2. They move and vibrate faster, moving furtheraway from one another.

- 3. Forces of attraction between the particlesare no longer strong enough to hold themtogether

- 1. When losing heat, the particles lose energy.

- 2. They move and vibrate slower and closer toeach other.

- 3. Forces of attraction between the particlesstrengthens, holding them tighter to each other.

- -Loosely packed

-Arranged in a disorderly manner

- Sliding past each other

- Higher Kinetic energy than solid, but lower thangas

- Strong forces between them

- Vibrate about their fixed positions

- -Closely Packed

-Arranged in a orderly manner

- Lowest Kinetic energy

- Very strong attraction force

- -Very far apart

-Arranged in a random pattern

- Moving at random

- Highest Kinetic energy

- Very weak forces of attraction between them

- A molecule is made out of two or more atomscombined together.

- Losing electron(s)

- Gaining electron(s)

- An ion is formed when an atom gains or loseselectrons.

- Molecules of elements consist of a fixed numberof the same type of atoms combined together.

- Molecules of compounds consist of a fixednumber of two or more different types of atomscombined together.

- This occurs only between metal and non-metalatoms.

- Compounds formed by such bonds are calledionic compounds.

- Occurs only between metal atoms.

- 'Ionic compounds' are used when substancesconsist of metal and non-metal atoms.

- 'Molecules' is used when the substancesconsist of non-metal only.

- Occurs only between non-metal atoms.