Understanding Alkali Metals

This video from MooMooMath and Science discusses alkali metals, which are found in group 1 of the periodic table. These metals include lithium, sodium, potassium, rubidium, cesium, and francium. They are characterized by their high reactivity, especially with water, low melting points, and ability to conduct electricity. The video explains that their reactivity increases down the group and highlights their abundance in the Earth's crust. Alkali metals have one valence electron, making them highly reactive, and are often stored in oil to prevent reactions with air and water. They are usually found in nature combined with other elements, forming compounds like sodium bicarbonate and common salt. The video also mentions the uses of these metals, such as potassium in fertilizers and lithium in batteries.

Which group in the periodic table contains the alkali metals?

• Group 18

• Group 1

• Group 2

• Group 17

Which of the following is NOT an alkali metal?

• Potassium

• Calcium

• Lithium

• Sodium

What is a common characteristic of alkali metals regarding their melting points?

• They have low melting points

• Their melting points are variable

• They have high melting points

• They do not melt

Why are alkali metals highly reactive?

• They have high melting points

• They have one valence electron

• They have a full outer shell

• They are noble gases

How are alkali metals typically stored to prevent reactions?

• In oil

• In water

• In sand

• In air-tight containers

Which alkali metal is commonly used in batteries?

• Sodium

• Potassium

• Lithium

• Cesium