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Ch 6 And 7
Test Description: Mix of questions from both chapters
Instructions: Answer all questions to get your test result.
1) Which of the following is not a principle of the atomic theory?
A
different elements have different properties because their atoms are different
B
chemical processes are the result of the rearrangement, combination, or separation of atoms
C
all atoms are made of subatomic particles
D
all atoms of a particular element have the same properties
2) Which idea states that tiny particles do not absorb or release energy in a smooth flow?
A
quark theory
B
quantum theory
C
Pauli exclusion principle
D
Heisenberg uncertainty principle
3) Which type of chemical formula shows the general arrangement of atoms in molecules?
A
molecular
B
intermolecular
C
empirical
D
structural
4) Which of the following is not one of the three groups that elements are divided into?
A
heavy metals
B
semimetals
C
metals
D
nonmetals
5) Which of the following metals is an alkali metal?
A
calcium
B
magnesium
C
sodium
D
iodine
6) Which of the following does not increase the rate at which a substance dissolves?
A
increasing temperature
B
grinding
C
stirring
D
increasing concentration
7) What property describes how strongly atoms of an element pull on electrons in a chemical bond?
A
concentration
B
electronegativity
C
ionic strength
D
solubility
8) What is the sum of the atomic masses of all the atoms in a molecule?
A
atomic mass
B
molar mass
C
molecular mass
D
units of mass
9) A substance with strong intermolecular forces typically has a(n) ? boiling point than a substance with weak intermolecular forces.
A
equal
B
4-digit
C
higher
D
lower
10) What process occurs when an atomic nucleus breaks up or changes, emitting radiation?
A
fusion
B
fission
C
radioactive decay
D
nuclear decay
*select an answer for all questions
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