Properties of elements

A __________ is a pure substance made of only one type of atom.

• Compound

• Element

• Proton

• Electron

An atom is made up of how many different types subatomic particles?

• One

• Two

• Three

• Four

Where are protons found in an atom?

• The nucleus

• Energy level

• The atomic mass

• By electrons

What are the rows of the periodic table of elements called?

• Columns

• Groups

• Periods

• Lines

The numbered row of the periodic table tells you how many __________an element has.

• neutrons

• protons

• atoms

• energy levels

Examples of elements that are gases and not reactive are called _______________.

• metals

• non-metals

• metalloids

• noble gases

What are the columns of the periodic table of elements called?

• columns

• groups

• periods

• lines

________ are good conductors of electricity; they are often shiny solids at room temperature.

• Non-metals

• Metalloids

• Metals

• Noble gases

The __________ tells you how many protons an element has.

• atomic number

• atomic mass

• energy levels

• electrons

To find the number of neutrons, you subtract the atomic ___________ from the atomic _________.

• mass; number

• number; mass

• electrons; protons

• neutrons; electrons