The Halogens - Colour Properties

The video tutorial explains fluoride, a compound of calcium and fluorine, and its presence in Group 7 of the periodic table, known as the halogens. It discusses the safe use of fluorine in everyday items like nonstick pans and drinking water. The video also covers the trends and properties of Group 7 elements, highlighting their non-metallic nature, color variations, and state changes from gases to solids as you move down the group. Specific properties of halogens such as fluorine, chlorine, bromine, and iodine are detailed, including their colors and states at room temperature.

What elements make up fluoride?

• Sodium and fluorine

• Calcium and chlorine

• Sodium and chlorine

• Calcium and fluorine

In which group of the periodic table is fluoride found?

• Group 8

• Group 1

• Group 2

• Group 7

Why is fluorine safe to use in nonstick pans and drinking water?

• It is a non-toxic gas

• It is safe when combined with other elements

• It is a stable metal

• It is naturally found in water

What is the color of fluorine gas?

• Yellow

• Purple

• Green

• Dark orange

Which halogen is a dark purple solid that produces a violet vapor when warmed?

• Bromine

• Chlorine

• Fluorine

• Iodine