Chemistry Vocab

6. the positively charged central core of an atom, consisting of protons and neutrons and containing nearly all its mass
7. the nature of something's ingredients or constituents; the way in which a whole or mixture is made up
9. a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign
10. a subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen
11. a characteristic of a particular substance that can be observed in a chemical reaction
13. a group of atom bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction
15. a pure substance consisting only of atoms that all have the same number of protons in their nuclei
17. the basic unit of a chemical element
18. the idea that every substance has at least one property that makes it unique and able to be differentiated from other substances
19. consisting of uncombined atoms rather than molecules

1. a physical or chemical property that is unique to a particular substance
2. a particle kind of matter with uniform properties
3. relating to the nucleus of an atom
4. a thing that is composed of two or more separate elements; a mixture
5. of, involving, or comprising a foundation; basic
8. marked by lack of variation, diversity, change in form, degree or character in all occurrences or manifestations
11. a minute portion of matter
12. the reactions a system produces in response to a particular circumstance
14. a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids
16. a substance made by mixing other substances together