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Unit 4

Atoms, Molecules, Elements, Compounds

QuestionAnswer
The smallest particle into which an element can be divided and still maintain the properties of the element Elements
The building blocks of matter Atoms
The word atom comes from the Greek word atomos. What does this mean? Invisible
Positively charged particles located in the nucleus of an atom Proton
What particles besides protons are located in the nucleus of an atom? Neutrons
Each row of elements in the periodic table Period
One or two letters used to represent an element’s name Symbol
Number of protons in an atom of that element Atomic Number
Make up all the different kinds of matter in the universe Atoms
Two or more elements that have combined Molecule
Two or more atoms combine Element
Carbon, hydrogen, oxygen and nitrogen Found in living things
Chart of elements based on their property Periodic Table of Elements
Each column of elements in the periodic table Group
Average mass of an atom of that element Atomic Mass
Negative particles of an atom Electrons
Neutral particles of an atom Neutrons
A compound is a molecule
Atom's have a lot of... Space
How many atoms can fit on a pen head 5 million
How many electrons can fit on energy level I? 2
How many electrons can fit on energy level II? 8
How many electrons can fit on energy level III? 18
Most of the mass of an atom comes from.... the nucleus
Created by: chrispullen1978
 

 



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