ch 5 chem test
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| Carbon and other nonmetallic are found in which are of the periodic table? | Dmitri Mendeleev
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| When he was putting his table together, what characteristics did he use to place the elements in order? | Rows-increasing mass Columns-similar properties
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| What units do you put on atomic mass? | amu
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| What is the definition of atomic mass? | Individual Atoms- number of protons plus number of neutrons Elements- weighted average of the masses of the isotopes
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| Does the atomic number increase or decrease as you move from left to right? How much does one element to the next? | Increases by 1 for each element as you move from left to right
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| The vertical columns on the Periodic Table are called what? | groups
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| The horizontal rows are called what? | period
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| What states of matter are represented by the metals at room temperature (solid, liquid, and/or gas)? | solid and liquid
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| There are two groups on the periodic table that are considered the most reactive, what are they? | alkali metals and halogens
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| How many valence electrons does each of those groups have? | group 1 has 1 and group 17 has 7
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| Na is a very reactive element in period 3, what other elements in period 2 would be considered reactive? | lithium and fluorine
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| Every element in the Carbon group has how many valence electrons? | 4
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| Looking at group 2 which element would be the most reactive? | radium
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| If a reaction is going to take place, which Halogen would expect to react the fastest? | fluorine
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| What element do all living creatures contain? | carbon
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| List 4 properties of metals | luster, shine, good conductors, solids
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| If K reacts very violently in water, what you expect Fr to do? Why? | React even more violently - reactivity increases down a period
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| The majority of the periodic table is made up of what kind of elements? | metals
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| What group on the periodic table represents all three states of matter at room temperature? | halogens
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| What do each of the four terms in the element box represents? | 55 - atomic #, Cs - element symbol, Cesium - element name, 132.91
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| what are valence electrons? | electrons in the outer shell
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| What do elements that belong to the same group have in common? | same number of valence electrons and similar chemical properties
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| What is the "octect rule"? | atoms are most stable if they have filled or empty outer shell of electrons
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| what is the trend in reactivity within the alkali metals and the alkaline earth metals? | reactivity increases as you go down the column
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| What is the trend in reactivity within the halogens? | reactivity decreases as you go down the column
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| Define Ionization energy. Which metal has the highest ionization energy? why? | The amount of energy needed to remove an electron from an atom
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| Define electronegativity? Which element has the highest electronegativity? why? | the ability of an atom to attract or gain an electron
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| List the following elements in order of increasing ionization energy: Li, Ti, Ba, K, Fr. | Fr, Ti, Ba, K, Li
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| List the following elements in order of increasing reactivity: C, S, I, Te, F | C, Te, S, I, F
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Created by:
EmmaRoseDavis