Introduction to Chemistry and Biology Quiz

What is the atomic weight of carbon?

• 14

• 6

• 12

• 8

Which type of bond involves the sharing of electrons?

• Metallic bond

• Hydrogen bond

• Ionic bond

• Covalent bond

What rule is used to ensure atoms have eight electrons in their outer shell?

• Duplet rule

• Octet rule

• Shell rule

• Electron rule

Which compound is described as the simplest carbon compound?

• Methane

• Ethane

• Propane

• Butane

What type of bond is formed when atoms completely transfer electrons?

• Dipole bond

• Ionic bond

• Hydrogen bond

• Covalent bond

Which element is described as needing only one electron to fulfill its octet?

• Chlorine

• Oxygen

• Hydrogen

• Carbon

What is the most common ionic compound in our daily lives?

• Magnesium sulfate

• Sodium chloride

• Calcium carbonate

• Potassium chloride

What type of bond is characterized by a slight positive and negative charge due to unequal sharing of electrons?

• Ionic bond

• Metallic bond

• Nonpolar covalent bond

• Polar covalent bond

Which molecule is an example of a polar covalent bond?

• Water (H2O)

• Oxygen (O2)

• Methane (CH4)

• Nitrogen (N2)

Who was the scientist behind the concept of Lewis dot structures?

• Isaac Newton

• Gilbert Lewis

• Albert Einstein

• Niels Bohr