Quiz on Carbon Compounds and Bonding

What is the main focus of Chapter 4 in the learning material?

• Ionic compounds

• Carbon and its compounds

• Metals and their properties

• The periodic table

What is the approximate percentage of carbon in the Earth's crust?

• 0.02%

• 0.5%

• 0.02%

• 0.03%

What type of bond is discussed in section 4.1 of the chapter?

• Ionic bond

• Metallic bond

• Covalent bond

• Hydrogen bond

What is the melting point of ethanol (CH₃CH₂OH) in Kelvin?

• 290 K

• 209 K

• 156 K

• 90 K

Which compound has the highest boiling point according to Table 4.1?

• Acetic acid (CH₃COOH)

• Chloroform (CHCl₃)

• Ethanol (CH₃CH₂OH)

• Methane (CH₄)

Why are most carbon compounds poor conductors of electricity?

• They have high melting points.

• They have strong forces of attraction between molecules.

• The forces of attraction between the molecules are not very strong.

• They are ionic compounds.

What is the electronic configuration of carbon?

• 1s² 2s² 2p²

• 1s² 2s² 2p⁶

• 1s² 2s¹ 2p³

• 1s² 2s² 2p⁴

What is required for carbon to form a C⁴⁺ cation?

• Gain four electrons

• Lose four electrons

• Gain two electrons

• Lose two electrons

What is the atomic number of hydrogen?

• 1

• 2

• 3

• 4

How many electrons does hydrogen need to fill its K shell?

• One

• Two

• Three

• Four