Seeleys Anatomy and Physiology Chapter 2 Exam Questions and Answers 100% Pass
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Seeleys Anatomy and Physiology
Chapter 2 Exam Questions and Answers
100% Pass
Matter - anything that occupies space and has mass
Mass - •: the amount of matter in an object.
•International unit for mass = kilogram (kg).
Weight - the gravitational force acting on an object of a given mass....
Matter - ✔✔anything that occupies space and has mass
Mass - ✔✔•: the amount of matter in an object.
•International unit for mass = kilogram (kg).
Weight - ✔✔the gravitational force acting on an object of a given mass.
Element - ✔✔the simplest type of matter with unique chemical properties;
composed of atoms of only one kind.
Atom - ✔✔smallest particle of an element that has chemical characteristics
of that element.
Atoms: composed of what subatomic particles. - ✔✔Neutrons: no electrical
charge
Protons: one positive charge
Electrons: one negative charge
Nucleaus - ✔✔formed by protons and neutrons.
,Most of the volume of an atom occupied by what - ✔✔electrons
Atomic number - ✔✔equal to number of protons in each atom, which is
equal to the number of electrons.
Mass Number - ✔✔number of protons plus number of neutrons.
Isotopes - ✔✔two or more forms of same element with same number of
protons and electrons but different neutron number.
Atomic Mass - ✔✔average mass of naturally occurring isotopes
Avogadro's Number - ✔✔6.00x10^23
Mole: - ✔✔Avogadro's number of atoms, ions, molecules.
Molar mass - ✔✔mass of one mole of a substance in grams, which is equal
to its atomic mass units.
Chemical bonds are formed when - ✔✔electrons in the outermost energy
level (valence shell) are either shared with or transferred to another atom.
Ionic Bonding - ✔✔atoms exchange electrons
Covalent Bonding - ✔✔two or more atoms share electron pairs
Type of chemical bond between two atoms is determined by their
difference in what? - ✔✔electronegativity.
Ions - ✔✔atoms that have gained or lost an electron.
, Cations - ✔✔are positively charged
Anions - ✔✔are negatively charged
Single covalent: - ✔✔two atoms share one pair of electrons
Double covalent - ✔✔Two atoms share 4 electrons.
Nonpolar covalent - ✔✔Electrons shared equally because nuclei attract the
electrons equally
Polar covalent - ✔✔Electrons not shared equally because one nucleus
attracts the electrons more than the other does
Molecules - ✔✔two or more atoms chemically combine to form an
independent unit
Compounds - ✔✔a substance composed of two or more different types of
atoms chemically combined.
Molecular Mass - ✔✔determined by adding up atomic masses of its atoms
or ions.
Solubility - ✔✔ability of one substance to dissolve in another.
Dissociation (separation) - ✔✔in ionic compounds, cations are attracted to
negative end and anions attracted to positive end of water molecules; the
ions separate and each becomes surrounded by water molecules.
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