cumulative
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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| What do atoms need to bond with each other? | Nearly empty or nearly full
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| What is the reason for atom bonding? | to have a full/stable outer shell
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| How do atoms bond? | by losing or gaining electrons
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| What are two examples of unfriendly atoms? | half full outer shells and atoms with full outer shells
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| What is an Ionic bond? | when either a loss or gain of electrons is taking place
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| What is an Ion? | an atom that has a charge
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| Atoms in their elemental state are... | nuetral
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| _______ are atoms with a positive charge | cations
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| _______are atoms with a negative charge | anions
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| Physical properties can be observed without _______ ________ matter | chemically changing
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| Chemical properties describe how a ______ ______ interacts with other substances | substance interacts
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| Name six physical properties | Malleability, density, color, texture, solubility, mass
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| solids have _____ shape and ______ volume | definite, defenite
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| in a solid particles are ______ _________ | packed together
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| _______ have indefinite shapes and indefinite volume | liquids
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| ________ have _______ shape and _________ volume | gases, indefinite, indefinite
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| a physical change has ____ ______ in identity of a substance | no change
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| a chemical change has one or more ________ substances provided | new
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| freezing point is from liquid to _______ | solid
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| melting point is from solid to _______ | liquid
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| boiling point is from ______ to _________ | solid to gas
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| condensation point is _____ to _______ | gas to liquid
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| sublimation point is ______ to _________ | solid to gas
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| physical changes include... | tearing, crushing, phase changes
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| chemical changes include... | combustion and acid rain
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| the law of conservation of mass states that mass can not be _______ nor ________ | created nor destroyed
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| define a family | the number of valance electrons inside a family
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| what is a period | the number of energy levels in an atom
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| how many electrons can each level hold | 2,8,18
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| What is the term used for the electrons in the outermost shell or energy level | valance
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| After atoms bond and form chemical compounds they... | react with other chemical compounds or atoms
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| a chemical reaction indicates a _____ _________ | chemical change
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| The Law of Conversation of Mass tells us that after reactants go through a ____ _____, the number of atoms in the ______ must be equal to the number of atoms in the ______ | chemical reaction, product, reactants
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| The number of atoms on either side of the arrow must be _________ | equal
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| We count the number of ______ on each side and use _______ to _______ the equation | atoms, coefficients, balance
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| When atoms share electrons a _______ is taking place | covalent bond
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| Why is the covalent bond the strongest type of bond? | because molecules are formed
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| What do atoms form when they bond? | a compound
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| the formation of a compound is the result of a ________ ________ because a new substance with ____ ________ has been formed | chemical change, new properties
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| What does the nucleus contain? | protons and nuetrons
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| What does the atomic number represent? | protons and electrons
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| Nuetrons = _____ minues _________ | Atomic mass minus protons
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| What is an atom? | the smallest particle into which an element can be divided and still be the same substance
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| If the number of protons and electrons are not equal the atoms becomes a _______ ___________ | charged particle
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| What are some characteristics of Metals? | shiny, good conductors, malleable, ductile
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| What are some characteristics of Metalloids? | emi conductors, shiny or dull, somewhat malleable or ductile
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| What are some characteristics of Nonmetals? | dull, poor conductors, unmalleable, britttle
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