Chemical Bonding

Front

According to the octet rule, the number of chlorine ions that would bond with a calcium ion is

Back

2

Ionic compounds are electrically neutral. Calcium ions have a +2 charge and chlorine ions have a -1 charge so 2 chlorine ions are needed to create a -2 charge to balance out the +2 charge of calcium.

Front

Which of the molecules has the highest boiling point? Options: Liquid 1: CH₄, Liquid 2: CH₃CH₃, Liquid 3: CH₃CH₂CH₃, Liquid 4: CH₃CH₂CH₂CH₃

Back

Liquid 4: CH₃CH₂CH₂CH₃

hydrocarbons are generally nonpolar molecules. The only intermolecular forces are London Dispersion forces. The more electrons in a molecule, the stronger

Front

The melting point of CBr₄ suggests that it can be classified as an ionic compound.

Back

False

There is no metal in this formula therefore it is not an ionic compound (a combination of metal and nonmetal)

Front

It takes more energy to overcome the attractive forces between particles of solid LiBr than it does to overcome the attractive forces between particles of solid PBr₃.

Back

True

Ionic compounds have higher melting points (require more energy to overcome the attractions between particles)

Front

How does the tug-of-war game shown in the figures relate to the concept of bonding electrons?

Back

The game represents the sharing of electrons between atoms.

Front

The statement that best describes bonding in a metallic compound

Back

metal atoms share electrons that move freely within a solid

(covalent compounds share electrons in bonds and ionic compounds are formed when atoms gain/lose electrons)

Front

The Octet Rule states that atoms tend to form bonds so that each atoms has eight ____ in its ____ shell

(word choices: electrons / protons / neutrons / inner / valence)

Back

The Octet Rule states that atoms tend to form bonds so that each atoms has eight ELECTRONS in its VALENCE shell

Front

This statement best describe what type of compound?

This compound conducts electricity and can be hammered into different shapes

Back

metallic compound

(metals have mobile electrons and can therefore conduct electricity and are malleable)

Front

This statement best describes what type of compound?

bonds that form when nonmetal atoms are close enough to overlap at least one valence orbital and share electrons

Back

covalent compounds

(covalent compounds are formed when nonmetal atoms share electrons by overlapping 1/2 filled valence orbitals)

Front

True or False?

The melting point of NaBr would be significantly LOWER than Br₂ because NaBr is an ionic compound whereas Br₂ is a covalent compound

Back

FALSE

While it is true that NaBr is ionic and Br₂ is covalent, it is generally found that the melting point of ionic compounds is much HIGHER than the melting point of covalent compounds.