Chem. 702 Review

Select the correct answer(s):

John Dalton's atomic theory states that....

• Atoms can be created, destroyed, or transformed.

• All matter is made up of divisible particles called atoms.

• All matter is made up of indivisible particles called atoms.

• Atoms cannot be created, destroyed, or transformed.

Select the correct answer(s):

John Dalton's atomic theory states that....

• In a physical reaction, atoms rearrange, combine, or separate

• The atoms of the same element are alike. They have identical mass and properties.

• The atoms of different elements are alike. They have identical mass and properties.

• In a chemical reaction, atoms rearrange, combine, or separate.

Select the correct electrical charges for the sub-atomic particles:

• Proton (+)

  Electron (neutral)

  Neutron (-)

• Proton (+)

  Electron (neutral)

  Neutron (neutral)

• Proton (-)

  Electron (neutral)

  Neutron (+)

• Proton (+)

  Electron (-)

  Neutron (neutral)

Select the correct answer(s):

In chemistry, the other names for an orbit are....

• shelling

• electron level

• shell

• energy level

State what happens when an electron jumps from a lower shell to a higher shell:

State what happens when an electron jumps from a higher shell to a lower shell:

Select the correct answer(s):

An atom is electrically neutral because....

• It has different numbers of electrons and neutrons

• It has different numbers of protons and electrons

• It has an equal number of protons and neutrons

• It has an equal number of protons and electrons

Select the correct answer:

Which force causes the instability inside an atom?

• electricity force

• electrovalent force

• elective force

• electrostatic force

Select the correct answer:

Which force maintains the stability inside an atom?

• centipedal force

• centrifugal force

• centerfugal force

• sentrifugal force

Select the correct symbols for the following:

Mass number

Atomic number

• A

  Z

• Z

  A

• M

  A