Unit B- Matter and Change

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Across
  1. 2. A vertical column in the periodic table. Also known as a family
  2. 8. Can be solids, liquids, or gasses at room temperature. Consist of non-metals
  3. 11. Group 17 elements, the most reactive non-metals
  4. 12. A change from a solid to a liquid
  5. 13. A chemical reaction that produces heat energy
  6. 14. A group of ions acting as one
  7. 17. The materials at the start of a reaction
  8. 18. What takes place when two or more substances react to form a new substance
  9. 21. These are characteristics that can be used to describe a substance
  10. 22. A chemical reaction that absorbs heat energy
  11. 24. A neutral particle
Down
  1. 1. Can be a solid or a gas
  2. 3. Where a material changes states
  3. 4. Where two or more materials react and create new materials
  4. 5. When the substances that make up the mixture are not separately visible
  5. 6. The mass of one atom of an element
  6. 7. Group 18 elements, the most stable and unreactive elements
  7. 8. When the substances that make up the mixture are visible
  8. 9. The new materials produced by the reaction
  9. 10. A horizontal row in the periodic table
  10. 15. They are pure substances consisting of at least one metal and one non-metal
  11. 16. The juice of a plant
  12. 19. It is anything that has mass and occupies space
  13. 20. The slow chemical change that occurs when oxygen in the air reacts with a metal
  14. 23. A chemical reaction that occurs when oxygen reacts with a substance to form a new substance