Compounds
Crossword
Click on a number to see the clue. When you are finished, click on check to check your answer. Click hint for an extra letter (though you will lose points).
Check
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 _ _ _ _ _.