Atomic Theory Quiz

……………… atomic theory states that all the atoms of a given element are identical to one another.

• Dalton

• Bohr

• Rutherford

• Thomson

Every element consists of a fundamental particle known as an ……………...

• Molecules

• ions

• atom

• none

Dalton’s atomic theory was derived from many observations of the behavior of ………………….

• Solids

• liquids

• gases

• plasma

Atoms are joined, separated and recombined but not created or …………….

• Destroyed

• created

• made

• produced

Atoms can bond together to form …………………...

• Molecules

• ions

• atom

• none

The atoms of certain elements are able to bond in different combinations called ………………...

• Allotropes

• isotopes

• ions

• none

Cathode rays are understood to be beams of ……………….

• Protons

• electrons

• neutrons

• none

Nucleus of the ……………………. contains protons and neutrons

• Molecule

• proton

• atom

• neutron

The radius of Helium atom is ………………pm.

• 30

• 32

• 33

• 31

The mass of the atom is entirely the number of protons and ………… in the nucleus.

• Protons

• neutrons

• electrons

• none