Chemical Bonds

What is the difference between ionic and covalent bonds?

• Ionic bonds involve sharing of electrons, while covalent bonds involve transfer of electrons.

• Ionic bonds are stronger than covalent bonds in all cases.

• Ionic bonds involve transfer of electrons, while covalent bonds involve sharing of electrons.

• Covalent bonds can only occur between nonmetals.

What is an example of an ionic compound?

• Sodium chloride (NaCl)

• Carbon dioxide (CO2)

• Methane (CH4)

• Glucose (C6H12O6)

What is a covalent bond?

• A bond formed when two atoms share one or more pairs of electrons.

• A bond formed by the transfer of electrons from one atom to another.

• A bond that occurs between two metals.

• A weak attraction between molecules.

What is an ionic bond?

• A bond formed when two atoms share electrons equally.

• A bond formed when one atom transfers electrons to another, resulting in charged ions.

• A bond formed by the attraction between molecules of different polarities.

• A bond formed when atoms are held together by a magnetic force.

What happens when a sodium atom loses an electron?

• The sodium atom becomes a negatively charged ion, Na⁻.

• The sodium atom becomes a neutral atom.

• The sodium atom becomes a positively charged ion, Na⁺.

• The sodium atom gains an additional electron.

What are metallic bonds?

• Bonds formed between metal atoms where electrons are shared in a 'sea' of electrons.

• Bonds formed between non-metal atoms through the transfer of electrons.

• Bonds that occur between metal and non-metal atoms involving ionic interactions.

• Bonds formed by the attraction between positively charged metal ions and negatively charged electrons.

What is the octet rule?

• Atoms tend to bond in a way that gives them eight valence electrons.

• Atoms prefer to have two valence electrons for stability.

• Atoms can bond in any configuration without regard to electron count.

• Atoms will always lose electrons to achieve a full outer shell.

What is an example of a covalent compound?

• Water (H₂O)

• Sodium Chloride (NaCl)

• Calcium Carbonate (CaCO₃)

• Iron Oxide (Fe₂O₃)

Covalent bonds are formed between which types of elements?

• Two or more nonmetals.

• A metal and a nonmetal.

• Two or more metals.

• Ionic compounds.

What are valence electrons?

• Electrons in the outer shell of an atom.

• Electrons that are lost during chemical reactions.

• Electrons that are found in the nucleus of an atom.

• Electrons that are involved in nuclear reactions.