TCDHA ANATOMY AND PHYSIOLOGY TEST 1
Atoms can ______ or ______ electrons in reactions and become ______ charged -
ANSWERS-Gain; Lose; Electrically
Atomic Number - ANSWERS-The number of protons in the nucleus of an atom
Energy Levels - ANSWERS-The possible energies that electrons in an atom can
have
An Atom is stable (nonreactive) when.... - ANSWERS-They have 8 electrons
Which energy level determines will REACT chemically? - ANSWERS-The Farthest
What an atom donates, accept, or share electrons to be completed; They form
a.... - ANSWERS-Chemical Bond
Chemical bond - ANSWERS-The force that holds atoms together
Ionic bonds - ANSWERS-Attractions between oppositely charged ions
An atom or group of atoms that has acquired a (+) or (-) charged is called? -
ANSWERS-An Ion
,Cation - ANSWERS-- A positively charged ion
- Lost electrons
Anion - ANSWERS-- A negatively charged ion
- Gains electrons
Which type of chemical bond is formed by an exchange of electrons? Which type
is formed by a sharing of electrons? - ANSWERS-Ionic Bonds &
Covalent Bonds
What happens when as electrolyte goes into solution? - ANSWERS-Dissolves in
water
Compounds that release ions when they dissolve in water are? - ANSWERS-
Electrolytes
What are molecules? - ANSWERS-Two or more ATOMS bonded together
What are compounds? - ANSWERS-Substances in which atoms of two
or more ELEMENTS are chemically combined
Electrolytes are also referred to? - ANSWERS-The ions themselves In body fluids
, What must be present in the proper concentrations in the intercellular and
extracellular fluids? - ANSWERS-Electrolytes
What must be kept with narrow limits in order to maintain homeostasis? -
ANSWERS-The many different ions in body fluids
Covalent Bonds - ANSWERS-- Bonds created by sharing electrons with other
atoms.
- Making both of them stable
- May share 1-3 pairs between atoms
Nonpolar Covalent Bond - ANSWERS-- A covalent bond in which the electrons are
shared equally by the two atoms
- No part of the combined particle is more negative or positive than any other
part
Polar Covalent Bond - ANSWERS-- A covalent bond in which electrons are not
shared equally
- One region of the combination is more negative and one part is more positive
TREU OR FALSE:
Molecules are the smallest unit of a covalently bonded substance that retains all
their properties - ANSWERS-TRUE
Atoms can ______ or ______ electrons in reactions and become ______ charged -
ANSWERS-Gain; Lose; Electrically
Atomic Number - ANSWERS-The number of protons in the nucleus of an atom
Energy Levels - ANSWERS-The possible energies that electrons in an atom can
have
An Atom is stable (nonreactive) when.... - ANSWERS-They have 8 electrons
Which energy level determines will REACT chemically? - ANSWERS-The Farthest
What an atom donates, accept, or share electrons to be completed; They form
a.... - ANSWERS-Chemical Bond
Chemical bond - ANSWERS-The force that holds atoms together
Ionic bonds - ANSWERS-Attractions between oppositely charged ions
An atom or group of atoms that has acquired a (+) or (-) charged is called? -
ANSWERS-An Ion
,Cation - ANSWERS-- A positively charged ion
- Lost electrons
Anion - ANSWERS-- A negatively charged ion
- Gains electrons
Which type of chemical bond is formed by an exchange of electrons? Which type
is formed by a sharing of electrons? - ANSWERS-Ionic Bonds &
Covalent Bonds
What happens when as electrolyte goes into solution? - ANSWERS-Dissolves in
water
Compounds that release ions when they dissolve in water are? - ANSWERS-
Electrolytes
What are molecules? - ANSWERS-Two or more ATOMS bonded together
What are compounds? - ANSWERS-Substances in which atoms of two
or more ELEMENTS are chemically combined
Electrolytes are also referred to? - ANSWERS-The ions themselves In body fluids
, What must be present in the proper concentrations in the intercellular and
extracellular fluids? - ANSWERS-Electrolytes
What must be kept with narrow limits in order to maintain homeostasis? -
ANSWERS-The many different ions in body fluids
Covalent Bonds - ANSWERS-- Bonds created by sharing electrons with other
atoms.
- Making both of them stable
- May share 1-3 pairs between atoms
Nonpolar Covalent Bond - ANSWERS-- A covalent bond in which the electrons are
shared equally by the two atoms
- No part of the combined particle is more negative or positive than any other
part
Polar Covalent Bond - ANSWERS-- A covalent bond in which electrons are not
shared equally
- One region of the combination is more negative and one part is more positive
TREU OR FALSE:
Molecules are the smallest unit of a covalently bonded substance that retains all
their properties - ANSWERS-TRUE
