Physical Science Unit 2 Review Question Preview (ID: 53267)


All About Atoms And Molecules. TEACHERS: click here for quick copy question ID numbers.

Which model of the atom was modeled after the solar system?
a) Dalton's model
b) Thomson's model
c) Rutherford's model
d) Bohr's model

Which model of the atom first introduced the idea of a nucleus?
a) Dalton's model
b) Thomson's model
c) Rutherford's model
d) Bohr's model

Which subatomic particle has a negative charge?
a) Proton
b) Electron
c) Neutron
d) All particles

Which subatomic particle has a positive charge?
a) Proton
b) Electron
c) Neutron
d) All particles

What information does the atomic mass of an element provide?
a) The sum of electrons and protons in an atom
b) The number of isotopes
c) The number of protons and neutrons in an atom
d) The difference between the number of protons and electrons

How do scientists determine the number of neutrons in an isotope of an atom?
a) They find the number of protons
b) They subtract the atomic number from the atomic mass
c) They add the number of electrons and protons
d) They divide the atomic mass by 2

The atomic number of an atom is the number of ________________.
a) Protons and neutrons
b) Neutrons
c) Electrons and neutrons
d) Protons

How many protons are in an element with an atomic number of 8 and a mass number of 18?
a) 3
b) 8
c) 10
d) 18

What is the smallest particle representing water?
a) A hydrogen atom
b) A molecule
c) An oxygen atom
d) Diatomic oxygen

Which of these is a physical property?
a) Malleable
b) Easy to digest
c) Does not burn
d) Becomes moldy quickly

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