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