Summative Quiz #2 re: Bonding

Electrons making up ionic bonds between a metal and non-metal involves:

• shared electrons

• transferred electrons

• only lone pairs of electrons

• the weakest type of bond in chemistry

Electrons that are in covalent bonds between non-metals involve:

• a transfer of electrons

• sharing of electrons

• only lone pairs of electrons

• electron connections the represent the strongest bond in chemistry

When forming a dry compound formula for in ionic compound (aka salt) between a metal and a non-metal ion, what should the overall charge on the compound be? Review your notes on the "criss cross method" that we covered recently on Jam Boards and in our Zoom class.

• neutral or zero, because all the (+) protons should be equal in number to all the (-) electrons within that compound

• (+) by a certain number depending on how many more protons you have in the compound

• (-) by a certain number depending on how many more electrons you have in the compound

• none of the other answers are correct

What is a compound or an example of a compound?

• a physical blend of two or more substances

• a chemical combination of two or more elements of different types

• Oxygen gas, aka O₂

• Hydrogen gas, aka H₂

What type of electron pair has the strongest bond within a molecule?

• lone pair

• ionic bond

• covalent bond

• LDF, dipole-dipole, or hydrogen bond

What is the ion ratio for the compound:

Calcium chloride, aka CaCl₂ ?

• 1 : 1

• 1 : 2

• 2 : 1

• 2 : 3

For electron stability of an atom, the saying goes "8 is great, except for atom's near (in atomic number to) helium (on the Periodic Table) two will do." This refers to what fundamental rule for filling the outside electron paths of atoms.

• Hund's rule

• Boyle's law

• Law of Conservation of Mass

• Octet rule

Covalent bonds are:

• usually formed between non-metal atoms

• weaker than ionic bonds

• always involve sharing of some valence electrons

• all the other answers are correct

Which is the Lewis Electron Dot structure for: calcium hydroxide?

Recall: hydroxide is a polyatomic ion make of oxygen and hydrogen. Hover your cursor over the answer choices toward the left of your box choice to see the images in your answer choices.

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If the electronegativity difference between two bonding atoms is greater than 2.0 (for example between K (potassium) with an electronegativity of .82 and Cl (chlorine) with an electronegativity of 3.16), then the polarity and bond type must be:

• polar ionic

• polar covalent

• non-polar ionic

• non-polar covalent