Properties and reactions of Alkali Metals in Group 1 of the Periodic Table

The video tutorial covers alkali metals, their position in the periodic table, electronic structures, and reactivity. It explains their reactions with oxygen, halogens, and water, highlighting the formation of metal oxides, halides, and hydroxides. The tutorial also discusses the increasing reactivity of alkali metals down the group due to weaker electron interactions. Finally, it compares the properties of alkali metals with transition metals, noting their softness, low melting points, and low density.

Why are alkali metals highly reactive?

• They have one electron in their outer shell.

• They have a full outer shell of electrons.

• They are located in the middle of the periodic table.

• They have a high melting point.

What happens when an alkali metal reacts with oxygen?

• It forms a metal halide.

• It forms a metal oxide.

• It forms a metal hydroxide.

• It forms a metal carbonate.

What is the result of the reaction between sodium and chlorine?

• Sodium carbonate

• Sodium chloride

• Sodium hydroxide

• Sodium oxide

What is produced when alkali metals react with water?

• Metal oxides and hydrogen gas

• Metal carbonates and carbon dioxide

• Metal hydroxides and hydrogen gas

• Metal halides and oxygen gas

How does the reactivity of alkali metals change as you move down the group?

• It fluctuates randomly.

• It increases.

• It remains the same.

• It decreases.

Which property is NOT shared by alkali metals and transition metals?

• Ductility

• Good conductivity

• High density

• Malleability

What is a unique property of alkali metals compared to most metals?

• Softness

• High density

• Brittleness

• High melting point