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Chemistry: Atomic Theory Flashcards | StudBud

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Chemistry: Atomic Theory

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Atomic Theory Quiz

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Questions 10

Answers

1
What are the representative elements?
gases
main group elements of the periodic table
the house of representatives
metals
2
Which group of elements have no charge?
alkaline earth metals
halides
noble gases
alkali metals
3
If an element has an atomic number 34 and a mass number 78, what is the number of neutrons?
44
34
64
78
4
What is another name for the horizontal rows in the periodic table?
group
trend
family
period
5
The atomic number of an element indicates the number of.....
protons
electrons
mass unitis
neutrons
6
Which of the following is a part of Dalton's Atomic Theory?
atoms of different elements combine in whole number ratios
atoms of the same element are identical to other elements
chemical reactions don't involve the rearrangement of atoms
all matter is composed of divisible particles
7
What is the charge of the Group I elements?
+4
+3
+1
+2
8
What is "average atomic mass"?
mass of 2 isotopes averaged together
total mass of an atoms isotopes
weighted average of an atoms isotopes
total mass of several different atoms chemically combined
9
Atomic mass is found by adding together the total masses of ..............
protons, electrons, and neutrons
protons and electrons
electrons and neutrons
protons and neutrons
10
What are isotopes?
atoms of the same element with different numbers photons
atoms of the same element with different numbers protons
atoms of the same element with different numbers neutrons
atoms of the same element with different numbers electrons