Periodic Table

Front

What does the atomic number tell us?

Back

The atomic number tells the number of protons and electrons in an atom.

Front

What is an element that is shiny and conducts heat and electricity well?

Back

A metal.

Front

What is an element that conducts heat and electricity poorly?

Back

A nonmetal.

Front

What is the term for an electron found in the outermost shell of an atom that determines the atom's chemical properties?

Back

Valence electron.

Front

What does the atomic mass tell us?

Back

The atomic mass tells the sum of protons and neutrons in an atom.

Front

What are the three main categories of elements in the periodic table?

Back

Metals, nonmetals, and metalloids.

Front

What is a metalloid?

Back

A metalloid is an element that has properties of both metals and nonmetals.

Front

What are alkali metals?

Back

Alkali metals are highly reactive metals found in Group 1 of the periodic table.

Front

What is a chemical bond?

Back

A chemical bond is the force that holds atoms together in a compound.

Front

What is the significance of valence electrons in chemical reactions?

Back

Valence electrons determine how an atom will react with other atoms.