Elements And Chemical Bonds (Pt.1) Question Preview (ID: 45325)


Elements And Chemical Bonds (Pt.1). TEACHERS: click here for quick copy question ID numbers.

A covalent bond would involve _________________.
a) 2 metal atoms
b) 1 metal atom and 1 nonmetal atom
c) 2 nonmetal atoms
d) 1 metal atom and 1 metalloid atom.

Carbon is a group 14, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)
a) 1
b) 2
c) 3
d) 4

Nitrogen is a group 15, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)
a) 1
b) 2
c) 3
d) 4

A covalent bond is a chemical bond formed when two atoms ____________ valence electrons to fill their outer shells and become a stable molecule or compound.
a) transfer
b) share one or more pairs of
c) absorb
d) neutralize

Beryllium is a group 2, period 2 element. How many bonds can this atom form? (Tip: consider its Electron Dot Diagram)
a) 1
b) 2
c) 4
d) 8

Sodium (Na) is a Group 1 element, in Period 3. Is Sodium stable?
a) Yes - It has the same amount of protons and electrons
b) Yes - It is a neutral atom
c) No - Sodium (Na) would need to lose 1 valence electron to become stable
d) No - Sodium (Na) would need to gain 1 valence electron to become stable

Which of the following types of models includes only valence electrons?
a) Electron Configuration Diagram
b) Ball-and-Stick Model
c) Electron Dot Diagram
d) Space-Filling Model

Why are Noble Gases (Group 18 Elements) stable?
a) They have an equal amount of protons and electrons.
b) Their outermost shell is full/complete with 8 valence electrons.
c) Their outermost shell is empty.
d) They are the product of ionic bonding.

Valence electrons are the only electrons in an atom of an element that participate in chemical bonds. (True or False)
a) TRUE
b) FALSE
c) -
d) -

Electrons closest to the nucleus are in the lowest energy level and electrons farthest from the nucleus are in the highest energy level. Valence electrons are always found in the ___________________.
a) lowest energy level, closest to the nucleus.
b) highest energy level, furthest from the nucleus.
c) nucleus.
d) None of These

A(n) _________________ tells us the number of atoms of each element in a compound.
a) chemical profile
b) atomic formula
c) chemical formula
d) chemical symbol

How is a compound unique, when compared to a molecule?
a) A compound must include at least two different elements, a molecule can posses only one type of element.
b) A compound can posses only one type of element, a molecule must include at least two different elements.
c) A compound must include both a metal and a nonmetal.
d) None of These

Nonmetals are on the right side of the table. Nonmetals are _________________.
a) bad conductors of electricity and thermal energy.
b) bad conductors of electricity, but good conductors of thermal energy.
c) good conductors of electricity, but bad conductors of thermal energy.
d) good conductors of electricity and thermal energy.

Elements rarely exist in pure form in nature. (True or False)
a) TRUE
b) FALSE
c) -
d) -

A __________________________ is a force that holds two or more atoms together in a molecule/compound.
a) gravitational bond
b) chemical bond
c) nuclear reaction
d) magnetic bond

There are three main regions of elements on the periodic table. Which of the following is NOT one?
a) Metals
b) Polymers
c) Nonmetals
d) Metalloids

Except for hydrogen, elements on the left side are metals. Metals are _____________.
a) bad conductors of electricity and thermal energy.
b) bad conductors of electricity, but good conductors of thermal energy.
c) good conductors of electricity, but bad conductors of thermal energy.
d) good conductors of electricity and thermal energy.

If I wanted to find out which elements on the periodic table have similar chemical properties and characteristics, which of the following would be the best approach?
a) Identify elements in the same period.
b) Identify elements in the same group.
c) Identify elements with the same amount of isotopes.
d) Identify elements with charges and those that are neutral.

Elements are organized on the periodic table in vertical columns, called groups. What can groups tell us about the electron configuration of an atom of a particular element?
a) How many valence electrons it has.
b) How many electron shells it has.
c) How many protons it has.
d) How many neutrons it has.

Elements are organized on the periodic table in horizontal rows, called periods. What can periods tell us about the electron configuration of an atom of a particular element?
a) How many valence electrons it has.
b) How many electron shells it has.
c) How many non-valence electrons it has.
d) How many neutrons it has.

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