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Study Guide- Lesson 1&2

Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
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Question
Answer
the basic particle from which all elements are made; the smallest particle of an element that has the properties of that element   atom  
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tiny, negatively charged particle that moves around the outside of the nucleus of an atom   electron  
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the central core of an atom which contains protons and neutrons   nucleus  
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small, positively charged particles that are found in the nucleus of an atom   proton  
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a region of an atom in which electrons of the same energy are likely to be found   energy level  
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a small particle found in the nucleus of an atom with no electric charge   neutron  
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the number of protons in the nucleus   atomic number  
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an atom with same number of protons and different number of neutrons from other atoms of the same element   isotope  
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the sum of protons and neutrons in the nucleus of an atom   mass number  
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the average mass of all the isotope of an element   atomic mass  
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an arrangement of the elements showing the repeating pattern of their properties   periodic table  
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one or two letter representation of an element   chemical symbol  
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a horizontal row of elements in the periodic table   period  
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elements in the same vertical column of the periodic table; also called families   group  
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Who created the first version of the periodic table?   Dimitri Mendeleev  
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What are the three major groups on the periodic table?   metals, nonmetals, and metalloids  
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How do you find the number of neutrons in the nucleus of an atom?   1st- round the atomic mass to a whole number 2nd- subtract the atomic number from the mass  
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What tells you the number of protons and electrons?   atomic number  
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How many electrons can each shell hold?   1st- 2 2nd- 8 3rd- 18 or 8 4th- 32  
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If an element is in the 2nd period, how many shells will it have?   2  
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If an element is in the 5th group, how many valence electrons will it have?   5  
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Created by: southern_flair
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