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28 Cards in this Set
- Front
- Back
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where is the atomic number and atomic mass on element |
atomic number above symbol, mass below |
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how do you find neutrons, electrons and protons |
electrons and protons are equal and are atomic number, neutrons is found by subtraction atomic number (elect./ pro.) from the atomic mass |
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which is positive and negative ( electron or proton) |
electron is negative, proton positive and make sure to make plus sign and minus sign above the number and N next to neutron number |
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an atom is the _____ particle of an ____ that still has the same _____ of the____ |
smallest element characteristics element |
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atoms make up___\ which make up __\\\ which makes up ____ |
elements molecules compounds |
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which is which?? element and molecule 1. substance made up of only 1 type of atom 2. more than 1 atom bonded together |
1. element 2. molecule |
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how would you write 1 mercury in words |
1 atom of the element mercury |
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how would u write 2 atoms of Hydrogen bonded together |
1 molecule of the element hydrogen |
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what is a compound! |
a substance made up of more than one kind of atom bonded together |
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how would u write a compound of o, H, H |
one molecule of the compound water |
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what is a mixture |
a collection of substances that are not bonded to one another |
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what is heterogenous mixture vs homogeneous |
heterogeneous mixture can be easily separated, homo. can’t |
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what an example of hetero and homo |
hetero is something like popcorn and m and ms homo is something like salt and water |
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physical properties can be observed or measured without changing the _____ of ____ |
composition matter |
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physical prop. are used to ___ and __ matter |
observe describe |
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physical prop: list 4 |
appearance texture color melting/boiling density solubility (how easy it dissolves) and conductivity |
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chem prop of matter describes its __\ to undergo some chemical change it reaction |
potential |
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ask these questions for chem prop: |
is it flammable? does it react with... oxygen in the air,acid or base, or water or other chemicals? |
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list 3 properties of metals and non metals |
metals: strong, malleable, good conductor nonmetal: weak, brittle, poor conductor |
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4 prop of mettaloid |
all solid at room temp brittle has luster semi-conductor of electricity |
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chemical change strands formes one type of__ into another kind which may hav dif ___\ |
matter properties |
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3 example of chemical changes |
rusting burning bleaching |
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3 signs of chem changes |
change in color, production of gas, production of odor |
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physical changes are a change in which the identity of the substance does ___change |
not |
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examples of physical change 4 |
freezing/melting/boiling changing in shape changing color dissolving |
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how many C atoms, H atoms, Oatoms and total atoms are in C6H1206 |
C is 6 H is 12 O is 6 total is 24 |
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how many atoms and how many elements are in 2CuSO4 and how many elements |
CuSO4 is 6 2CuSO4 is 6x2 which is 12 total atoms and 3 elements |
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how many elements and total atoms are in NaH(CO3)4 |
Na is 1 H is 1, 1C plus 3O) is 4 tines 4 is 16 plus 2 is 18 total and 4 elements |
