Which term describes a pure substance that is made up of only one type of atom?

1) matter

2) rock

3) compound

4) element

How many valence electrons do the alkali metals possess?

According to the second law of thermodynamics, energy tends to become more spread out. True False

How was the first periodic table of the elements organized?

What has more inertia? Hammer or Feather?

What is the only way that elements can be separated

Choose the statement below that is TRUE. A solution will form between two substances if solute-solvent interactions are of comparable strength to the solute-solute and solvent-solvent interactions.

When liquid silver nitrate and liquid sodium chloride are combined, solid silver chloride forms along with a new liquid, sodium nitrate. Witch substance represents the precipitate? Silver nitrate silver chloride sodium chloride sodium nitrate

The summer season at Arica and Rio de Janeiro Occurs from approximately

What are the major function of the digestive system

What is a substance made of identical atoms called?