Juan Delgado?s Flashcard Ch.6 &7

Electrons
An ionic bond forms when **** are transfer from one to another
True
The lower ionization energy, the easier it is to remove an electron from an atom
6
How many sodium ions surround each chloride ion in this
three-dimensional structure?
False
The attractions among ions
within a crystal lattice are weak
3
How
many pairs of electrons must two nitrogen atoms share in order for
each atom to have eight valence electrons?
Negative
When atoms form a polar covalent bond, the atom with the greater
attraction for electrons has a partial ****charge
True
In a water molecule, the
hydrogen side of the molecule has a partial positive charge, and
the oxygen side has a partial negative charge
Binary
A compound made from
only two elements
Charge
When a metal forms more than one ion, the name of the ion contains
a Roman numeral to indicate the ****** on the ion
Polar
A term describing a covalent bond in which electrons
are not shared equally
True
The new substances formed
as a result of a chemical reaction are called products
14
According to the equation
C ! O2hCO2, how many carbon atoms react with 14 molecules
of oxygen to form 14 molecules of carbon dioxide?
True
A chemical equation must
be balanced in order to show that mass is conserved during a
reaction
Mole
Chemists use a counting unit called a(n)***** to measure amounts of a substance because chemical reactions often
involve large numbers of small particles
True
A decomposition reaction is
the opposite of a synthesis reaction
Calcium
Which reactant
is oxidized in this reaction?
absorbed
During a chemical reaction, energy is either released or
Rate
Any change that happens over time can be expressed as a(n)
catalyst
A substance that affects the reaction rate
without being used up in the reaction
Combustion
Areaction in which a substance reacts
rapidly with oxygen, often producing
heat and light
x

Hi!
I'm Larry

Hi there, would you like to get such a paper? How about receiving a customized one?

Check it out