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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
all atoms are made of subatomic particles
B
different elements have different properties because their atoms are different
C
all atoms of a particular element have the same properties
D
chemical processes are the result of the rearrangement, combination, or separation of atoms
2) Which idea states that tiny particles do not absorb or release energy in a smooth flow?
A
Heisenberg uncertainty principle
B
quark theory
C
quantum theory
D
Pauli exclusion principle
3) Which type of chemical formula shows the general arrangement of atoms in molecules?
A
empirical
B
intermolecular
C
molecular
D
structural
4) Which of the following is not one of the three groups that elements are divided into?
A
semimetals
B
heavy metals
C
metals
D
nonmetals
5) Which of the following metals is an alkali metal?
A
iodine
B
magnesium
C
sodium
D
calcium
6) Which of the following does not increase the rate at which a substance dissolves?
A
grinding
B
increasing concentration
C
stirring
D
increasing temperature
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
molecular mass
B
atomic mass
C
molar 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
lower
B
4-digit
C
equal
D
higher
10) What process occurs when an atomic nucleus breaks up or changes, emitting radiation?
A
fusion
B
radioactive decay
C
fission
D
nuclear decay
*select an answer for all questions
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