Across |
| 2. | A _ _ _ _ _ _ _ _ is a characteristic or feature of a chemical. | | 4. | Compounds have _ _ _ _ _ _ _ _ _ properties from those of the elements they contain. | | 5. | When substances react, there is a _ _ _ _ _ _ in the chemicals that are present and often, a change in temperature. | | 7. | The smallest piece, or unit, of an element. It can be represented by a chemical symbol (Such as H, He, O, N, Al). | | 8. | The type of element that is brittle, dull and does not conduct electricity. | | 11. | The temperature when a substance changes from a solid to a liquid. | | 13. | If a substance is _ _ _ _ _ _, it dissolves. | | 14. | A pure substance that is made of more than one kind of atom chemically joined together. | | 15. | A pure substance that consists of only one kind of atom. | | 16. | Whether a substance is a solid a liquid or a gas. |
|
Down |
| 1. | A substance that always has the same set of properties, no matter how it is made or where it is found, is called a _ _ _ _ substance. | | 3. | In a cheical _ _ _ _ _ _ _, existing substances are changed to make a new substance by rea-arranging the atoms. | | 4. | To _ _ _ _ _ _ _ _ _ a compound means to break it into simpler substances, such as elements it contains. | | 6. | A _ _ _ _ _ _ _ _ is the smallest part of an element or compound that can exist on its own. | | 10. | A _ _ _ _ _ _ _ represents the smallest particle o a pure substance using a shorthand of letters and numbers. | | 12. | A _ _ _ _ _ is a way to present information or an idea that helps you to understand more and make predictions. | | 9. | an element that is shiny, maleable (bends) and ductile (can form wires), and conducts electricity is a _ _ _ _ _. |
|