| A | B |
|---|
| ORGANIC COMPOUNDS | COMPOUNDS THAT CONTAIN CARBON. |
| CARBOHYDRATES, PROTEINS, LIPIDS, NUCLEIC ACIDS | MOST IMPORTANT GROUPS OF ORGANIC COMPOUNDS. |
| INORGANIC COMPOUNDS | COMPOUNDS THAT DO NOT CONTAIN CARBON. |
| CARBOHYDRATES | AN ENERGY-RICH ORGANIC COMPOUNDS SUCH AS STARCHES AND SUGARS; MADE OF CARBON, HYDROGEN, OXYGEN. |
| SIMPLE SUGARS | BUILDING BLOCKS OF STARCHES. |
| CELLULOSE | CARBOHYDRATE FOUND IN PLANT CELL WALLS. |
| PROTEINS | LARGE ORGANIC COMPOUNDS CONTAINING CARBON, HYDROGEN, OXYGEN AND NITROGEN. |
| AMINO ACIDS | BUILDING BLOCKS OF PROTEINS. |
| ENZYMES | A TYPE OF PROTEIN THAT SPEEDS UP A CHEMICAL REACTION IN A LIVING THING. |
| LIPIDS | ENERGY-RICH COMPOUNDS THAT INCLUDE FATS, OILS AND WAXES. |
| NUCLEIC ACIDS | VERY LARGE ORGANIC MOLECULES MADE OF CARBON, HYDROGEN, NITROGEN, AND PHOSPHORUS. |
| DNA | GENETIC MATERIAL THAT CARRIES INFORMATION ABOUT AN ORGANISM. |
| RNA | PLAYS AN IMPORTANT ROLE IN THE PRODUCTION OF PROTEINS. |
| ELEMENT | A SUBSTANCE THAT CANNOT BE BROKEN DOWN NTO SIMPLER MATERIALS BY CHEMICAL REACTIONS. |
| COMPOUND | A SUBSTANCE FORMED FROM TWO OR MORE CHEMICALLY COMBINED ELEMENTS. |
| MIXTURE | ANY MATTER CONSISTING OF TWO OR MORE SUBSTANCES PHYSICALLY COMBINED IN NO PARTICULAR PROPORTION BY MASS. |
| CALCIUM AND PHOSPHORUS | ELEMENTS PRESENT IN BONES. |
| CALCIUM AND POTASSIUM | ELEMENTS NEEDED FOR MUSCLE CONTRACTION. |
| OXYGEN | MOST ABUNDANT ELEMENT IN THE HUMAN BODY. |
| WATER, CARBON DIOXIDE, SALT, CARBON MONOXIDE, RUST | EXAMPLES OF COMPOUNDS |
| SALT WATER, CONCRETE, AIR, BRASS | EXAMPLES OF MIXTURES |
| ATOM | THE SMALLEST UNIT OF AN ELEMENT. |
| MOLECULE | THE SMALLEST UNIT OF MOST COMPOUNDS. |
