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Tay Science voc.

vocab words 4 ch. 17

QuestionAnswer
The smallest particle of an element that can be identified with that element. Consists of protons and neutrons in a nucleus surrounded by electrons. Atoms
A substance of only one kind of atom. Examples are: Carbon, oxygen, hydrogen, and nitrogen Element
a perpetual random movement of microscopic particles suspended in a fluid medium Brownian Motion
The smallest particle of substance consisting of 2 or more atoms of the same or different elements bonded together Molecule
A chemical substance made of atoms of two or more different elements combined in a fixed proportion Compound
A description that uses numbers and symbols of elements to describe proportions of elements in a compound or reaction Chemical Formula
The positively charged center of an atom, which contains protons and neutrons and has almost all the mass of the entire atom but only a tiny fraction of the volume Nucleus
AN electrically neutral particle that is one of the two kinds of particles found in the nucleus of an atom Neutrons
A positively charged particle that is one of the two kinds of particles found in the nucleus of an atom Protons
A form of an element having a particular number of neutrons in the nuclei of its atoms. Different isotopes of a particular element have the same atomic number but different atomic mass numbers Isotopes
Number of protons in the nucleus of an atom Atomic Number
An atom (or group of atoms bound together) with a net electric charge, which is due to the los or gain of electrons Ion
a model of which the electrons of an atom are pictured as grouped concentric shells around the nucleus Shell model of the atom
A chart that lists elements by atomic number and by electron arrangements so that arrangements with similar chemical properties ar in the same column Periodic Table
A fourth phase of matter in addition to solid, liquid and gas. In the plasma phase which exists mainly at high temperature. Matter consists of positively charged ions and free electrons Plasma
Created by: tenderle14
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