CHEM 121 FINAL EXAM!
1). Kinetic molecular theory
Ans: all matter is made of tiny particles that are constantly moving
2). Fundamental particle
Ans: take a macroscopic object and divide it repeatedly. Eventually you have a
particle, which, if further divided is no longer the original substance. This smallest piece
of the substance is called...
3). H2o molecule
Ans: the fundamental particle of water is what?
4). Atom
Ans: the basic unit of a chemical element
5). Molecule
Ans: two or more atoms (same or different) chemically bound
6). Element
Ans: fundamental particle contains only one kind of atom
7). Compound
Ans: two or more different kinds of atoms chemically bound
8). The same
Ans: in a pure substance, all the fundamental particles are what?
9). Solution
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, Ans: mixture that is uniform throughout
10). Density
Ans: = mass / volume
11). Atomic number
Ans: number of protons in the nucleus, defines the element
12). Mass number
Ans: equal to the sum of protons and neutrons
13). Isotope
Ans: what results when you change the number of neutrons in an element?
14). Atomic mass
Ans: weighted average of the masses of the isotopes of an element, gives the mass
of one atom of the element
15). Alkali metals
Ans: group 1 on periodic table
16). Alkali earth
Ans: group 2 on periodic table
17). Halogens
Ans: group 17 on periodic table
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1). Kinetic molecular theory
Ans: all matter is made of tiny particles that are constantly moving
2). Fundamental particle
Ans: take a macroscopic object and divide it repeatedly. Eventually you have a
particle, which, if further divided is no longer the original substance. This smallest piece
of the substance is called...
3). H2o molecule
Ans: the fundamental particle of water is what?
4). Atom
Ans: the basic unit of a chemical element
5). Molecule
Ans: two or more atoms (same or different) chemically bound
6). Element
Ans: fundamental particle contains only one kind of atom
7). Compound
Ans: two or more different kinds of atoms chemically bound
8). The same
Ans: in a pure substance, all the fundamental particles are what?
9). Solution
PaperStoc.com Page 1 of 12
, Ans: mixture that is uniform throughout
10). Density
Ans: = mass / volume
11). Atomic number
Ans: number of protons in the nucleus, defines the element
12). Mass number
Ans: equal to the sum of protons and neutrons
13). Isotope
Ans: what results when you change the number of neutrons in an element?
14). Atomic mass
Ans: weighted average of the masses of the isotopes of an element, gives the mass
of one atom of the element
15). Alkali metals
Ans: group 1 on periodic table
16). Alkali earth
Ans: group 2 on periodic table
17). Halogens
Ans: group 17 on periodic table
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