Mole day 2

Front

Categories of elements by position on the periodic table

Back

metals, nonmetals, metalloids

Front

Why do elements combine to form compounds with other elements?

Back

To gain 8 electrons in their outer shell.

Front

What kind of bond forms by the transfer of electrons from one element to another?

Back

ionic

Front

Elements that give up electrons are

Back

metals

Front

When the atom of a metal loses an electron, the atom becomes

Back

an ion that is positively charged

Front

Metallic atoms lose electrons. What elements gain electrons?

Back

Nonmetals

Front

An atom that gains or loses electrons is now a/an

Back

ion

Front

When two atoms share electrons, they are bonded by

Back

covalent bond

Front

A compound that is held together by a covalent bond creates a

Back

molecule

Front

Water is an example of a compound in which electrons are shared, but sharing is unequal. This is a:
- polar covalent bond
- ionic bond
- covalent bond
- metallic bond

Back

polar covalent bond