Introduction to Chemical Bonding

The video tutorial explains the concept of elements as unique atomic building blocks, highlighting that there are 92 naturally occurring elements on Earth. It discusses how these elements form compounds through chemical bonds, which can be between atoms of the same or different elements. The properties of compounds can differ significantly from the elements they are formed from. The tutorial also covers the three main types of chemical bonding: between non-metals, between metals, and between non-metals and metals, all involving the transfer or sharing of electrons.

How many naturally occurring elements are there on Earth?

• 90

• 100

• 92

• 118

What is a compound?

• A substance with more than one element in a fixed ratio

• A mixture of elements

• A single element

• A type of atom

Which of the following is an example of a compound?

• Mercury

• Water

• Chlorine gas

• Gold lattice

What happens to the nucleus of an atom during chemical bonding?

• It splits

• It remains unchanged

• It changes

• It merges with another nucleus

Which type of bonding involves sharing electrons?

• Hydrogen bonding

• Covalent bonding

• Metallic bonding

• Ionic bonding