Chapter 3 Test Question Preview (ID: 39768)
Atoms, Ions, Isotopes, History Of The Atom And Basic Mole Conversions.
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What does the -p- orbital most look like?
a) a sphere
b) two tear drops
c) a donut
d) a star
A magnesium atom has 10 electrons. What is its charge?
a) +1
b) +2
c) -1
d) -2
A nitrogen atom has a -3 charge, how many electrons does it have?
a) 4
b) 7
c) 9
d) 10
A negative ion is called a(n)
a) cation
b) anion
c)
d)
What is an ion?
a) Atom with different number of protons
b) Atom with different number of electrons
c) Atom with different number of neutrons
d) Atom with different number of both protons and electrons
What is the mass number for a Chlorine atom that has 20 neutrons?
a) 17
b) 34
c) 35
d) 37
Carbon 14 has how many neutrons?
a) 6
b) 7
c) 8
d) 9
What is an isotope
a) Atom with different number of Protons
b) Atom with different number of electrons
c) Atom with different number of neutrons
d) A single atom
What is the law of conservation of mass?
a) Mass cannot be created nor destroyed?
b) Mass can be created
c) Mass can be destroyed
d)
Who discovered the proton?
a) Rutherford
b) Millikan
c) Thomson
d) Dalton
Who discovered the mass and charge of an electron?
a) Rutherford
b) Millikan
c) Thomson
d) Dalton
Who discovered the electron
a) Rutherford
b) Millikan
c) Thomson
d) Dalton
Who was the schoolmaster with a 5 part atomic theory?
a) Rutherford
b) Millikan
c) Thomson
d) Dalton
How many grams are in 0.456 mol of Cu
a) 29.0 g Cu
b) .056 g Cu
c) 42.0 g Cu
d) .0301 g Cu
How many moles are in 10.23 grams of Carbon?
a) 12.0 mole
b) 14.24 mole
c) .164 mole
d) .852 mole
How many atoms are in one mole of anything?
a) 1 atom
b) 5.62 x 10^23 atoms
c) 6.022 x 10^23 atoms
d) Depends on the elements weight
How many moles are in 4.56 x10^24 atoms of gold?
a) 7.57
b) 5.77
c) 7.57 x 10^48
d) 79
How many atoms are in 32.9 grams of Kr
a) 83.8
b) 8.38x10^23
c) 2.36x10^23
d) 97.5
What element has a molar mass of 190.23
a) Os
b) Nb
c) Au
d) Ag
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