Woodruff- Periodic Table
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| symbol | shorthand way to write the names of elements
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| Rules for writing symbols | Uppercase-first letter, second letter lowercase, must be printed
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| Where do symbols come from? | Some are the Latin, Greek or German names of the elements
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| periodic table | a table of elements arranged in order of increasing atomic number
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| periodic means | repeats at regular intervals
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| Who was Dmitri Mendeleev? | Russian chemist who organized 63 known elements
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| How are elements arranged in periodic table? | increasing atomic number
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| atomic number indicates the number of ____ | protons
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| Modern periodic law | the chemical properties repeat in a way that allows them to be arranged in columns and rows
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| What are groups or families of elements? | vertical column with similar chemical properties
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| How are the groups or families named? | After the first element in group
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| What is the name for group V A? | Nitrogen
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| What is the name for group VI A? | Oxygen
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| What is the special name for group VII A? | halogens
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| What is the name for group O? | noble or inert gases
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| Elements in a group all have ____ | the same number of electrons in the outer energy level
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| What are periods or series of elements? | horizontal rows
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| What do all elements in a period have in common? | the same number of energy levels
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| Location of an element in the table generally indicates the _____ of element it is | type
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| Four groups into which elements can be classified depending on the number of electrons in the outermost shell | metals, non-metals, metalloids, noble gases
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| Where are metals located on the periodic table? | left side of the staircase
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| How many electrons do metals have in the outermost energy level? | 1, 2, 3
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| What do metals tend to do with electrons? | Lose them to non-metals
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| Ion | charged particle
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| valence | outer energy level of electrons
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| When metals lose their electrons, what type of charge do their ions have? | +1, +2, +3
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| Where are the most active metals found? | lower left corner
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| Why are the metals in the lower left corner most active? | They are furthest from the nucleus,least attracted by their own nucleus, and easily pulled away by another
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| Name the most active metal | Francium (Fr)
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| Metals are good conductors of which two forms of energy? | heat and electricity
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| Where are non-metals located in the periodic table? | to the right of the staircase
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| How many electrons do nonmetals have in the outermost energy level? | 4, 5, 6, or 7
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| How many electrons do nonmetals tend to gain? | 1, 2, 3
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| From what type of elements do they gain the electrons? | metals
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| When nonmetals gain electrons, what type of charges do their ions have? | -1, -2, -3
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| Where are the most active nonmetals found? | upper right corner (excluding noble gases)
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| Why are the upper right corner nonmetals the most active? | the outer electrons are nearest to the nucleus thus additional electrons are attracted by their nucleus most easily
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| Name the most active nonmetal. | Fluorine (F)
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| Are nonmetals good conductors of heat and electricity? | no
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| metalloid | elements with some properties of both metals and nonmetals
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| Where are metalloids found? | along the staircase
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| Name the seven metalloids | B, Si, Ge, As, Sb, Te, Po
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| Metalloids are conductors, insulator or semi-conductors. | Semi-conductors
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| What is a semi-conductor? | a substance that conducts electricity better than an insulator, but not as well as a conductor
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| What are noble gases? | Atoms with a full outer energy level which seldom enters into chemical reactions
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| Where are the noble gases located on periodic table? | group O or VIIIA- column furthest to the right
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| How many electrons do noble gases have in their outermost energy level? | 8 except He with 2
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| Noble gases (do or do not) have electrical balance? | do- equal number of protons and electrons
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| Noble gases (do, do not) have a need to react | do not
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| 2/3 of elements on periodic table are classified as ____. | metals
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| Electron configuration | number of electrons in each energy level
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