 |
Give the
name & charge for the 3 subatomic particles in an atom. |
|
What is
the smallest particle of matter that keeps all the same properties of
oxygen? |
|
What is
an element? |
|
All
matter in the universe is made of what? |
|
Where are
electrons found in atoms? |
|
Electrons
will move to a higher energy level whenever they absorb what? |
|
If atoms
are packed tightly together is the substance a solid, liquid, or gas? |
|
If the
outer energy level of an atom is filled with electrons, will it react? |
|
If an
atom only has 6 outer electrons, will it gain or lose electrons to form an
ionic bond? |
|
If an
atom has 2 outer electrons, will it gain or lose electrons to form an
ionic bond? |
|
Why is
carbon able to form four covalent bonds with other atoms? |
|
Are
covalent bonds formed from sharing or transferring electrons between
atoms? |
|
Where are
the electrons found that are involved in ionic & covalent bonding? |
|
What is
an atom called that has lost or gained electrons? |
|
Are ionic
bonds formed from sharing or transferring electrons between atoms? |
|
If the
products have less energy than the reactants in a chemical reaction, is
the reaction endergonic or exergonic? |
|
Has
energy been released or absorbed if the products of a reaction have less
energy than the reactants? |
|
Chemical
reactions drive all of the activities within __________. |
|
Sketch a
graph showing an exergonic reaction. |
|
What
helps reduce the amount of activation energy required in chemical
reactions? |
|
Biological
catalysts are called __________. |
|
Cells
contain thousands of different enzymes. True or False |
|
Has a
molecule been oxidized or reduced when it gains an electron & hydrogen
ion? |
|
Oxidation-reduction
reactions in organisms allow the passage of _________ from molecule to
molecule. |
|
__________
is determined by the number of particles of a substance in a solution. |
|
If a
solution is neutral, what is true about its number of hydrogen &
hydroxide ions? |
|
If a
solution is alkaline or a base, does it have more hydroxide or hydrogen
ions? |
|
If a
solution has a pH of 11, is it an acid or base? |
|
Solutions
with a pH less than 7, would be acids or bases? |
|
_________
in organisms help prevent great changes in pH. |
