| A | B |
|---|
| CHEMISTS | scientists who study what all things in the universe are made of |
| ELEMENTS | Everything we can observe in the universe is made up of ___. |
| LIVING THINGS | ___ need elements to live and grow. |
| LABELS | ___ on food packages tell us which elements are in that food. |
| PERIODIC TABLE OF ELEMENTS | The ___ lists the names and symbols of elements. |
| CALCIUM | ___ is an element that our bodies need to make our bones strong. |
| ATOM | One small particle of an element is called an ___. |
| MOLECULE | When two or more atoms join together they form a ___. |
| COMPOUND | A ___ is a combination of elements fastened or joined together. |
| CARBON | ___ forms more compounds than any other element. |
| C | the symbol for Carbon |
| MERCURY and BROMINE | ___ are the only two elements that are liquids at room temperature. |
| HYDROGEN, HELIUM, and OXYGEN | ___ are three of the elements that are a gas at room temperature. |
| CHEMICAL FORMULAS | Chemists use chemical symbols to show elements that make up a compound. These symbols are called ___. |
| H 2 O | The chemical formula for water is ___. |
| O | the symbol for Oxygen |
| ATOMS OF THAT ELEMENT | The number in a chemical formula tells us how many ___ is in that compound. |
