Elements and Compounds

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Across
  1. 6. a pure substance composed of the same type of atom throughout
  2. 7. a substance made of two or more elements that are chemically combined in fixed amounts
  3. 9. the rigid, outer part of the Earth
  4. 11. a measure of the space that matter occupies
  5. 14. physical and chemical characteristics of matter used to describe or identify a substance
  6. 15. the sum of all living matter, made of a limited number of elements including oxygen, carbon, hydrogen, nitrogen, calcium, and phosphorus
Down
  1. 1. anything that has mass and takes up space
  2. 2. Table of Elements a table in which all of the known elements are arranged by properties and are represented by one or two letters, referred to as chemical symbols
  3. 3. the smallest part of an element - made of electrons, protons, and neutrons
  4. 4. all of the water on the Earth
  5. 5. a combination of two or more substances which do not chemically combine
  6. 8. the layer of gas surrounding planet Earth, held in place by gravity and composed of a limited number of elements, primarily nitrogen and oxygen
  7. 10. a measure of how much matter is present in a substance
  8. 12. any form of matter that is uniform throughout and has consistent properties
  9. 13. composition made of the same evenly distributed substance or combination of substances throughout