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the only metal that is liquid at room temperature
Mercury
the densest of the everyday metals
Lead
the colorless, odorless gas that makes up about 78% of the earth's atmosphere
Nitrogen
the most abundant element at the earth's surface
Oxygen
the basic building blocks of all complex compounds found in all living organisms
Carbon
the most common alkaline metal
Calcium
the semimetal that is used to make computer chips is called?
silicon
the element group that is highly reactive, showing a special tendency to form compounds with alkali and alkaline earth metals is known as ?
halogens
The most widely used halogen is ?
Chlorine
The elements in the last column of the periodic table that do not normally combine with anything else are called?
Noble gases
What is the term for a tiny group of two or more atoms that are bonded together tightly
molecules
what do we call a substance composed of more than one type of atom bonded together
compound
Which is the hardest of all known substances
diamond
What geometric shape is formed by sodium and chlorine
Crystal
What is compound that is composed of individual molecules called
molecular compound
what is a compound composed of charged atoms or groups of atoms known as
ionic compound
