Chemistry Vocab #1

2. Reaction in which the nuclei of one atom combines with the nuclei of another to form a larger nuclei
3. Mass per unit of volume
4. Smallest particle of a substance that can exist by itself
6. The quality of being exact
11. Group 18 in the periodic table with a full outer shell
13. Method that expresses the number multiplied by 10 and the appropriate power
18. A science that deals with the structure and properties
20. System of electrons surrounding the nucleus of an atom

1. Numerical measurements rather than its words
5. Experimental value minus the accepted value, divided by the accepted value and then multiplied by 100
7. Sum of the protons and neutrons in the nucleus of an atom
8. Atoms with same number of protons but not the same number of neutrons
9. a number that express a magnitude to a specified degree of accuracy
10. The heat required to raise the temperature of the mass of a given substance by given amount
12. atom that has gained or lost one or more electrons
14. The ability to work without mistakes
15. Data in words rather than in numbers
16. Element with the properties of both metals and nonmetals
17. A solid that is produced by a chemical reaction in solution
19. Number of protons in the nucleus in an atom