Chemistry UnitB

3. horizontal row of elements in the periodic table
6. shiny,malleable,ductile element that conducts electricity
7. principle that matter is not created or destroyed in a chemical reaction
11. ability to be stretched into wire
12. the smallest part of an element that is representative of that element
13. number of protons in the nucleus of an element
14. positively charged center of an atom
15. group 2 elements in the periodic table
17. dull brittle element that does not conduct electricity
18. an experiment in which all parts of a chemical reaction are accounted for
19. atom that is electrically charged
20. ability to be pounded into sheets
21. description of how a substance interacts with other substances
22. pure substance that cannot be broken down
23. slow chemical change when oxygen reacts with a metal
25. combination of symbols that represent a compound
28. pure substance formed from a metal and non-metal
29. absorbs energy (cold)
30. workplace hazardous materials information system
31. releases energy (warm)

1. experiment in which products can escape a chemical reaction
2. negatively charged particle
4. group 17 of the periodic table
5. substance that helps a chemical reaction to proceed quicker
7. chemical reaction that takes place in cells
8. element has both metallic and non-metallic properties
9. catalyst involved in chemical reactions in living things
10. chemical combination of two or more elements
14. group 18 of the periodic table
15. group 1 metals in the periodic table
16. pure substance formed when non-metals combine
23. change that results when substances react to create a different substance
24. reaction that occurs when oxygen reacts with a substance to form a new substance
26. chemical name of CO
27. mass of one atom of an element