Classify each of the following as elements (E), compounds (C) or Mixtures (M). Write the letter X if it is none of these. Diamond (C) Sugar (C6H12O6) Milk Iron (Fe) Air Sulfuric Acid (H2SO4) Gasoline (hydrocarbons) Electricity Krypton (K) ___Bismuth (Bi) ___Uranium (U) Kool-Aid ___Water (H2O) Alcohol (CH3OH) Pail of Garbage ___Ammonia (NH3) ___Salt (NaCl) Energy Gold (Au) Wood Bronze Ink Pizza Dry Ice (CO2) Baking Soda(sodium bicarbonate)

Diamond - E

Sugar- C

Milk - M

Iron- E

Air- M

Sulfuric Acid- C

Gasoline - M

Electricity- X

Krypton- E

Bismuth - E

Uranium - E

Kool-Aid -M

Water - C

Alcohol - C

Pail of Garbage - M

Ammonia - C

Salt - C

Energy - X

Gold - E

Wood - M

Bronze - M

Ink - M

Pizza - M

Dry Ice - C

Baking Soda - C

Explanation:

An element is the smallest part of a substance that is capable of independent existence. An element cannot be broken down into any other substance. Krypton, Bismuth etc are all elements.

A compound is a combination of two or more elements which are chemically combined together e.g NH3, CO2 etc.

A mixture is any combination of substances that are not chemically combined together. E.g Pizza, milk etc