Elements And The Periodic Table Question Preview (ID: 3320)
Chapter 4 Holt Text.
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Dalton\'s atomic theory stated that every element was made of atoms that could not be subdivided, atoms of the same element are alike and
a) atoms are made of protons, neutrons and electrons
b) atoms are constantly in motion
c) atoms can join to form molecules and compounds
d) the nucleus is the center of the atom
Which statement is true according to Dalton\'s theory?
a) atoms of different elements can join to form larger atoms
b) atoms of the same element are exactly alike
c) atoms of the same element differ in electric charge
d) atoms can be subdivided into smaller particles
According to Bohr's model of the atom, electrons behave like
a) planets orbiting the sun
b) waves on a vibrating string
c) light energy in a vaccuum
d) planets rotating on their axes
The order of elements in the periodic table is based on
a) the number of protons in the nucleus
b) the electric charge of the nucleus
c) the number of neutrons in the nucleus
d) atomic mass
Valence electrons determine an atom's
a) mass
b) chemical properties
c) electric charge
d) period
Alkali metals are extremely reactive because they
a) have very small atomic masses
b) are not solid at room temp
c) have one valence electron that is easily removed to form a postive ion
d) have two valence electrons that form compounds with calcium and magnesium
Most halogens form compounds by
a) gaining an electron to form a negative ion
b) losing an electron to form a positive ion
c) losing protons
d) joining with both calcium and carbon
Carbon and other nonmetals are on which area of the periodic table?
a) on the left-most side
b) on the right side
c) in the middle column of the periodic table
d) in the bottom rows
Avogadro's constant is defined as the number of particles in
a) one mole of a pure substance
b) one liter of a pure substance
c) one gram of a pure substance
d) one kilogram of a pure substance
Ionization energy refers to the process of
a) changing from one period to another
b) losing or gaining protons
c) turning lithium into flourine
d) losing or gaining electrons
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