Atoms and the Periodic table

An ________ is the smallest part of an element that still has the properties of that element.

A ________________ molecule is two or more atoms that are chemically combined.

Which of the following is an example of a molecule

• Water

• oxygen

• sulfur

• carbon

An ______________ element is a substance that is made up of only one type of atom.

Which of the following are examples of molecules

• Hydrogen sulfide

• Carbon

• Carbon dioxide

• Sodium Chloride

What is the symbol that represents Sodium

• S

• Sm

• Na

• So

Which of the following particles are found in the nucleus of an atom

• Electrons

• Protons

• Neutrons

Electrons have what charge

• +1

• -1

• 0

Neutrons have what charge

• +1

• -1

• 0

Electrons have a mass of

• 1 amu

• 1/1850 amu