U3S3 - Covalent Compounds

U3S3 - Covalent Compounds

By NEICEL FALCULAN

Poll

What type of elements are involved in covalent bonding?

• metals

• nonmetals

Open Ended

What differs it from ionic compounds?

Multiple Choice

Up to how many bonds can form between two nonmetals in covalent bonding?

• 1

• 2

• 3

• 4

​Up to 6 sharing electrons can form making up a triple bond which is the strongest.

Multiple Choice

Which of the following is NOT correct about covalent compounds?

• They have low melting and boiling points.

• Many are insoluble in water.

• They don't conduct electricity when dissolved in water.

• All covalent compounds are hard.

Multiple Choice

Water is an example of a covalent compound. If it is not capable of conducting electricity, then why are prone to electrocution when you throw an electric dryer in a bath tub?

• Because the blower has electricity.

• Because our body is a conductor of electricity.

• Because the water in the bath tub is not pure water.

• Because of the strong voltage of the hair dryer.

Multiple Choice

Sugar and oil are both examples of covalent compounds. Sugar dissolves in water while oil doesn't. Why is this so?

• Sugar is polar covalent while oil is nonpolar covalent. Sugar being polar can be dissolved in water (which is polar too).

• Sugar is soluble in water because the molecules are smaller as compared to oil.

• Sugar is non-polar covalent while oil is polar covalent. Like dissolves like so water (being nonpolar) will dissolve sugar.

• Sugar will dissolve in water because the particles will dissociate easily as compared to oil which is immiscible with water.

​Symmetric Molecule

​Asymmetric Molecule

​Polar and Non-Polar Covalent Bonds

Electronegativity Difference

Multiple Choice

Covalent compounds can have double bonds.

• True

• False

Multiple Choice

The electronegativity different betweem hydrogen and chlorine is 0.9. Therefore what is the polarity of this covalent compound?

• polar

• non-polar

Questions?