Elements And Chemical Bonds (Pt.2) Question Preview (ID: 45327)


Elements And Chemical Bonds (Pt.2). TEACHERS: click here for quick copy question ID numbers.

Why are group 18 noble gases stable?
a) They are all naturally neutral elements.
b) They are all ions.
c) Noble gases do not have any isotopes.
d) They all have full valence shells.

Metals are __________.
a) good conductors of electricity and thermal energy
b) malleable
c) shiny
d) All of these are properties of metals.

A metallic bond is a bond that forms between metal cations that ______________.
a) transfer their valence electrons to the electron shells of one another
b) share their valence electrons to complete each others outer shells.
c) share their pooled valence electrons
d) bond with metal anions

Covalent compounds are made up of many molecules, but in an ionic compound there are no molecules.
a) TRUE
b) FALSE
c) -
d) -

A neutral Sodium (Na) atom releases it's 1 valence electron to reveal a full shell of 8 underneath to stabilize. In the process the once neutral Sodium (Na) atom, becomes a(n) ______________.
a) Sodium cation
b) Sodium anion
c) Beryllium atom
d) Sodium isotope

A(n) _______________________ is a group of chemical symbols and numbers that represent the elements and the number of atoms of each element that make up a molecule or compound.
a) subscript
b) chemical formula
c) chemical bond
d) chemical configuration

The bonding of oppositely charged metal and nonmetal atoms will result in a(n) __________.
a) covalent molecule
b) polar covalent bond
c) ionic compound
d) metal

A(n) ___________ is an atom of an element that is no longer electrically neutral because it has gained or lost 1 or more valence electrons.
a) nuclide
b) dipole
c) isotope
d) ion

Which of the following is NOT a characteristic of most ionic compounds?
a) Solid and Brittle
b) High Melting/Boiling Points
c) Both of these are characteristic of most ionic compounds
d) Neither of these are characteristic of most ionic compounds

If 1 atom of the group 2 metal Magnesium (Mg) was to form an ionic bond with 1 atom of the group 16 nonmetal Oxygen (O), what would most likely have to take place?
a) The Mg atom would transfer it's 2 valence electrons to the O atom.
b) The O atom would transfer it's 2 valence electrons to the Mg atom.
c) Both of these would result in both elements becoming stable and oppositely charged.
d) Neither of these would result in both elements becoming stable and oppositely charged.

Polar compounds cannot dissolve in other polar compounds, but can dissolve in nonpolar compounds.
a) TRUE
b) FALSE
c) -
d) -

The Pauling Scale is used to show __________________________, which is the measure of the tendency of an atom to attract a bonding pair of electrons. This will vary from element to element.
a) electronegativity
b) nonpolarity
c) ionic tendency
d) subscript

Hydrochloric Acid (HCl) is a compound including 1 atom of Hydrogen (H) and 1 atom of Chlorine (Cl) joined in a single covalent bond. Hydrogen has an electronegativity of 2.1 and Chlorine has an elctronegativity of 3. Is this a polar compound?
a) YES - The Chlorine end would have a partial positive and the Hydrogen end a partial negative.
b) YES - The Chlorine end would have a partial negative and the Hydrogen end a partial positive.
c) NO- This is a nonpolar molecule
d) Not enough information to respond

A molecule is _____________________ if the atoms pull equally on the negative charge of shared electrons.
a) polar
b) ionized
c) ionic
d) nonpolar

A(n) ____________________ is a molecule that has a partial positive end and a partial negative because of an unequal sharing of the negative charges of shared electrons.
a) ionic compound
b) polar compound
c) nonpolar compound
d) metal

Covalent compounds are good conductors of electricity and thermal energy.
a) TRUE- They are made of metals and nonmetals and metals are good conductors of electricity.
b) TRUE- They are made of nonmetals, which are good conductors of electricity.
c) FALSE- They are made of nonmetals, which are bad conductors of electricity.
d) FALSE- They are made of metals and nonmetals and metals are bad conductors of electricity

Which of the following could form a covalent bond with a single Fluorine (Group 17) atom that would form a stable compound.
a) 1 Hydrogen (Group 1) atom
b) 1 Sodium (Group 1) atom
c) 1 Oxygen (Group 16) atom
d) 1 Phosphorus (Group 15) atom

How can one know that an electron configuration diagram of a Lithium (Li) atom would include 2 electron shells and 1 valence electron, if neutral?
a) Because it is a Period 1, Group 2 element
b) Because it is a Period 2, Group 1 element
c) Because it is a metalloid
d) Because it has only 2 isotopes

Metalloids have properties in common with metals and nonmetals and are often used as semi-conductors in electronic devices.
a) TRUE
b) FALSE
c) -
d) -

Neon (Ne) is a Group 18 noble gas. Which of the following would an atom of Neon be able to form a stable covalent bond with?
a) A group 2 element.
b) A group 10 element.
c) Noble gases don't form covalent bonds.
d) None of These

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