States of Matter

Question 1

What are the three states of matter?

Answer 1

Solid, Liquid and Gas

Question 2

How are the particles in a solid?

Answer 2

• Have regular arrangement
• are very close together
• vibrate about fixed position
• can’t compress a solid

Question 3

How are the particles in a liquid?

Answer 3

• have random arrangement
• are close together
• flow around each other
• can’t compress a liquid

Question 4

How are the particles in a Gas?

Answer 4

• Have a random arrangement
• The way the particles are arranged changes
• the way the particles move changes
• can be compressed

Question 5

How do substances change state?

Answer 5

The substances change state when they are heated or cooled (freeze, boil). The particles arrangement changes and the way the particles move changes.

Question 6

What does substances with high melting point due to strong bonds include?

Answer 6

They include ionic compounds, metals and giant covalent structures.

Question 7

How are the bonds in the substances that contain simple molecules?

Answer 7

Bonds within the molecules are strong covalent bonds

Question 8

Simple molecules need a lot of energy to overcome the forces between the molecules, so the melting and boiling point are relatively high. True / False

Answer 8

False

They need a lot of energy to overcome the forces between the molecules, so the melting and boiling point are relatively low.

Question 9

what does the chemical symbol (aq) mean?

Answer 9

(aq) - Aqueous (dissolved in water)