Chapter 22- The Periodic Table

Question 1

What are the properties of group 1?

Answer 1

The alkali metals

• have 1 electron on outer shell+want to loose it-> v. Reactive
• looses shine fast(stored in oil)
• low melting point
• low density (floats)
• conduct electricity
• soft
• X alkali metal reacts with water to produce X hydroxide and hydrogen
• X alkali metal reacts with water to produce X oxide

Question 2

Chemical equation for lithium reacting with water

Answer 2

Lithium+water-> lithium hydroxide+hydrogen

Question 3

Describe sodium S reaction with water (chemical equation in words)

Answer 3

Sodium+water-> sodium hydroxide+hydrogen

Question 4

Write the chemical equation for sodium’s reaction with air

Answer 4

Sodium+oxygen-> sodium oxide

Question 5

Chemical equation for lithium’s reaction with oxygen

Answer 5

Lithium+oxygen -> lithium oxide

Question 6

What are group 2?

Answer 6

The alkaline earth metals

Question 7

Describe group 2

Answer 7

The alkaline earth metals

• have 2 electrons in outer shell
• less reactive
• eg. Beryllium, magnesium, calcium

Question 8

What are group 7?

Answer 8

The halogens

Question 9

Describe group 7

Answer 9

The halogens

• have seven electrons in their outer she
• trying the gain one
• eg. Fluorine, chlorine, iodine

Question 10

Describe group O (group 8)

Answer 10

The noble gasses

• Unreactive-> have full outer shell
• eg. Helium, argon, neon

Question 11

What is group 1?

Answer 11

The alkali metals