Physical Science Test Chapter 4
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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| 2 or more substances combined, but not chemically joined | mixtures
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| mixtures can be organized by ... | ordinary ways
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| each substance in a mixture keeps ... | its own properties
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| 2 or more elements that are chemically joined (stuck together) | compounds
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| compounds must have ... | different properties than the substances that make them up
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| compounds must have bonds broken in order to ... | separate the elements
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| a certain compound always has the same ...(ex. sodium chloride is NaCl) | chemical formula
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| some compounds exist as ... | molecules
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| a molecule is ... | when atoms join by sharing electrons with eachother, they join in ratios
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| what can show how atoms in a compound are connected? | a sketch
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| bond length | the distance between the nuclei of two bonded atoms/the angle formed by 2 bonds to the same atom
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| does the structure of a compound affect the properties of the compound? | yes
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| strong structures are made of ... | bonded ions
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| high or low melting point?-compounds made of bonded ions have ( ) melting points ex.-salt | high
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| there are 2 main types of bond's between atoms, and which type it is depends on ... | its electonegativity
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| how much an atom attracts electrons in a bond | electron electonegativity
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| one atom steals electrons from another atom | ionic bond
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| opposites ( ) and ( ) together. | attract, stick
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| what do ionic compounds conduct when they are melted or dissolved in water? | electricity
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| ionic compounds stick together in ( ) not as ( ) molecules. they always ( ) eachothers charges. | networks, individual, balance
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| ionic compounds have very ( ) melting points | high
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| two atoms share electrons is called | covalent bonds
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| atoms may share (2 words) of electrons or ( ) than one pair of electrons. | one pair, more
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| O=O is a... | double covalent bond (it shares 4 electrons)
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| H-H is a ... | single covalent bond
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| a triple covalent bond shows ( ) lines | 3, it shares 6 electrons
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| atoms may ( ) we call these polar covalent bonds. | not share electrons equally
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| some covalent bonds have a ( ) or a ( ) charge. these are called ( ) | positive, negative, poly atomic ions
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| covalent compounds have ( ) melting points than ionic compounds do. | lower
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| we dont hear much about this bond | metallic bond
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| ( ) bond is similar yet different from the main 2 types of bond we just talked about(ionic and covalent) | metallic
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| a bond formed by positively charged metal ions in an "ocean" or "soup" of electrons | metallic bond
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| what can slide around in the "soup" of electrons from one nucleus to the next? | ions
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| this type of bonding allows metals to conduct ( ) well. | electricity
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| long molecules made of many smaller molecules bonded together. the smaller molecules that make them up are called monomers.(ex.- cotton, wool, rubber, plastics, DNA) | polymers
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To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
darrl
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