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McSweeney Ch. 17

McSweeney Chapter 17 Vocabulary

QuestionAnswer
1. The building blocks of matter Atoms
2. A material composed of only one kind of atom Element
3. The perpetual jiggling of particles that are just large enough to be seen Brownian Motion
4. The smallest particle of a substance consisting of two or more atoms that bond together by sharing electrons Molecule
5. A subsatance that is made of atoms of different elements combined in a fixed proportion. Compound
6. It tells the proportions of each kind of atom in a compound Chemical Formula
7. The central region of an atom that contains protons and neutrons Nucleus
8. The principal building blocks of the nucleus Nucleons
9. Nucleons in an electrically neutral state inside the nucleus of an atom Neutrons
10. Nucleons in a positive electrically charged state in the nucleus of an atom Protons
11. Atoms of the same element having different numbers of neutrons Isotopes
12. The number of protons in the nucleus of an atom Atomic Number
13. An atom with a net electric charge Ion
14. Electrons are pictured as orbiting in spherical shells around the nucleus Shell Model of the Atom
15. A chart that lists atoms by their atomic number and by their electron arrangements Periodic Table
16. A phase of matter in which matter consists of positively charged ions and free electrons Plasma
Created by: mcsweeney