What happens when chemical bonding occurs?

• Elements remain unchanged.

• Atoms of different elements separate.

• A chemical change takes place, forming a new product.

• Atoms of the same element repel each other.

Which of the following is an example of a compound?

• Oxygen gas (O2)

• Hydrogen gas (H2)

• Water (H2O)

• Nitrogen gas (N2)

What is the difference between a compound and a molecule?

• Compounds are formed by atoms of the same element.

• Molecules are formed by atoms of different elements.

• Compounds are formed by atoms of different elements, while molecules can be formed by atoms of the same element.

• Molecules are always larger than compounds.

Which of the following is a diatomic molecule?

• Carbon dioxide (CO2)

• Potassium nitrate (KNO3)

• Sulfur dioxide (SO2)

• Oxygen gas (O2)

Why do atoms bond?

• To become unstable.

• To achieve a noble gas structure.

• To increase their atomic number.

• To decrease their mass.

What type of bonding involves the transfer of electrons?

• Metallic bonding

• Ionic bonding

• Hydrogen bonding

• Covalent bonding

In a covalent bond, what happens to the electrons?

• They are shared between atoms.

• They are transferred from one atom to another.

• They are absorbed by the nucleus.

• They are lost to the environment.

Which type of bonding occurs between a metal and a non-metal?

• Covalent bonding

• Metallic bonding

• Ionic bonding

• Hydrogen bonding

How can you determine the number of valence electrons in an atom?

• By checking the atomic number.

• By looking at the atomic mass.

• By using the Roman group numerals on the periodic table.

• By measuring the atom's size.

What is the significance of valence electrons in bonding?

• They are involved in the sharing or transfer during bonding.

• They determine the atom's color.

• They are responsible for the atom's weight.

• They are not involved in bonding.