Unit B Vocabulary Crossword

2. Combination of pure substances, however the substances do not combine chemically.
4. have both metallic and non-metallic properties.
5. An experiment in which all products can escape.
7. When two or more materials react and create new materials
9. A solid material that is typically hard, shiny, malleable, ductile, and makes a good conductor.
10. A chemical reaction that takes in energy.
11. Is anything that has mass and takes up space.
13. When a material chanegs from one state to another, and is reversible.
16. the law that matter can not be created or destroyed in a chemical reaction.
20. Pure substances formed as a result of the attraction between ions.
21. A chemical reaction in which oxygen reacts with another substance to form a new one and gives off energy.
22. Acronym that defines a system of easy to see warning symbols.
23. Horizontal row on the periodic table.
24. A change from a solid to a liquid.
25. A slow chemical reaction in which oxygen reacts with metal.
26. A table in which the elements are organized.

1. Substance that helps the speed the rate of a chemical reaction.
3. A chemical reaction that releases energy.
6. When two or more substances combine to form a new substance.
8. An experiment in which all products can escape.
12. A pure substance and cannot be broken down further.
14. Atom that has become electrically charged because it has gained or lost electrons.
15. mass of one atom of an element, calculaterd from the total number of protons.
17. When a solid changes directly into a gas
18. A pure substabnce created when non-metals combine.
19. Vertical column on the periodic table.