CC13a Alkali Metals

How many electrons do the alkali metals have in their outer shell?

• 1

• 2

• 4

• 7

What is the charge of an alkali metal ion?

• 2-

• 2+

• 1-

• 1+

What is the correct order of reactivity of the alkali metals, from least reactive to most reactive?

• Na, Li, K

• K, Na, Li

• Li, Na, K

• Li, K, Na

What is produced when an alkali metal reacts with water?

• Metal oxide + Oxygen

• Metal oxide + Hydrogen

• Metal hydroxide + Oxygen

• Metal hydroxide + Hydrogen

What are the products of the reaction between an alkali metal and oxygen?

• Metal oxide + Hydrogen

• Metal oxide

• Metal hydroxide + hydrogen

• Metal hydroxide

Which of these statements about alkali metals is NOT true as you go down the group?

• The number of electrons in the outer shell increases.

• The outer electron is more easily lost.

• The outer electron becomes further from the nucleus.

• The size of the atoms increases.

Which of the following does NOT describe alkali metals?

• Shiny

• Soft

• High density

• Good conductivity

What is the trend for the reactivity of alkali metals?

• Reactivity decreases down the group.

• Reactivity increases down the group.

• Reactivity increases up the group.

• There is no change in reactivity.

When added to water, which alkali metal burns with a lilac flame and whizzes across the surface of the water?

• Lithium

• Sodium

• Potassium

• Rubidium

What can alkali metals be stored in to stop them from reacting with oxygen in the air?

• Water

• Oil

• Bubble wrap

• Tissue paper