chemistry crossword

4. a thing that is composed of two or more separate elements; a mixture
7. makeup of something
8. Marked by lack of variation, diversity, change in form
11. a characteristic or trait that you can use to describe matter by observation, measurement, or combination
14. a distinguishing quality, trait, or feature of an individual, thing, disorder
15. dense region consisting of protons and neutrons at the center of an atom
17. form of matter having constant chemical composition and characteristic properties.
18. a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.
19. a part or aspect of something abstract, especially one that is essential or characteristic
20. having to do with the nucleus of a atom

1. the nature of something's ingredients or constituents; the way in which a whole or mixture is made up
2. a small localized object to which can be ascribed several physical or chemical properties, such as volume, density, or mass
3. the basic unit of a chemical element.
5. 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
6. the basic unit of a chemical element
9. a particle with a positive charge that is in the nucleus of an atom.
10. how something acts or reacts to another thing
12. a substance made by mixing other substances together
13. basis supporting existence or determining essential structure or function
16. lightest stable particle having a negative charge