Chapter 4 Quiz

Dalton's model of an atom is best described as

• a solar system

• a solid sphere

• a plum pudding

• an electron cloud

Who provided the first evidence that atoms contain subatomic particles, with discovery of the electron?

• Dalton

• Thomson

• Rutherford

• Bohr

Almost all of the mass of an atom is located in its ...

• protons

• electrons

• nucleus

• electron cloud

An electron is a particle with

• a negative charge, found in the nucleus

• a positive charge, found in the nucleus

• no charge, found outside the nucleus

• a negative charge, found outside the nucleus

Which particle is the least massive?

• proton

• neutron

• electron

• moron

All atoms of an element have the same ...

• mass number

• atomic number

• number of isotopes

• number of neutrons

The number of neutrons in an atom equals the ...

• mass number minus atomic number

• atomic number plus number of electrons

• mass number plus atomic number

• atomic number minus mass number

The atomic number of sulfur is 16. How many ELECTRONS are there in an atom of sulfur-34?

• 16

• 18

• 34

• 50

The atomic number of sulfur is 16. How many PROTONS are there in an atom of sulfur-34?

• 16

• 18

• 34

• 50

The atomic number of sulfur is 16. How many NEUTRONS are there in an atom of sulfur-34?

• 16

• 18

• 34

• 50