Semester Final Review #2 Question Preview (ID: 45178)
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Each atom of protium has 1 proton, 0 neutrons and 1 electron. Each atom of deuterium has 1 proton, 2 neutrons and 1 electron. Are these the same or different elements?
a) same
b) different
c)
d)
A student sorted 6 elements. He placed iron, silver and sodium in group A. He placed neon, oxygen and nitrogen in group B. Which is 1 other element that could fit into group A?
a) gold
b) hydrogen
c) chlorine
d)
A student sorted 6 elements. He placed iron, silver and sodium in group A. He placed neon, oxygen and nitrogen in group B. What is 1 other element that fits into group B?
a) Magnesium
b) Fluorine
c) Lithium
d)
What is the atomic number of Magnesium?
a) 3
b) 2
c) 12
d) 24
What is the atomic mass of Iodine?
a) 53
b) 127
c) 7
d) 6
Why put data into a table during an experiment?
a) To organize
b) To share data
c) To test a hypothesis
d)
How many valence electrons does Krypton have?
a) 4
b) 6
c) 8
d) 2
How many shells does Potassium have?
a) 1
b) 2
c) 3
d) 4
A neutron
a) is a positive particle in the nucleus of the atom
b) is a neutral particle in the nucleus of the atom
c) is a negative particle in the nucleus of the atom
d) is a negative particle in the electron cloud of the atom
An electron
a) is a positive particle in the nucleus of the atom
b) is a neutral particle in the nucleus of the atom
c) is a negative particle in the nucleus of the atom
d) is a negative particle in the electron cloud of the atom
A proton
a) is a positive particle in the nucleus of the atom
b) is a neutral particle in the nucleus of the atom
c) is a negative particle in the nucleus of the atom
d) is a positive particle in the electron cloud of the atom
J. J. Thomson used the fact that ______ charges attract each other in his cathode-ray tube experiment.
a) like
b) neutral
c) atomic
d) opposite
______ contain(s) only one kind of atom.
a) Matter
b) Elements
c) Chemicals
d) Radioactive material
The atomic number of an isotope is the number of ______.
a) electrons and protons
b) neutrons and protons
c) neutrons
d) protons
The formula for density is ______.
a) D = m/V
b) D – m = V
c) D = V/m
d) D – V = m
Most nonmetals are
a) good conductors
b) brittle
c) gases
d)
In the modern periodic table (ours) the elements are arranging in order of increasing
a) atomic number
b) atomic diameter
c) atomic mass
d)
Elements that can be pounded into thin sheets are
a) metalloids
b) semiconductors
c) metals
d) non-metals
Melting the butter results in ____.
a) physical change
b) chemical change
c) endothermic reaction
d) exothermic reaction
Baking the bread in the oven causes ____.
a) physical change
b) chemical change
c) nuclear change
d) no change
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