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48 Cards in this Set
- Front
- Back
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The electron of an atom is... |
negatively charged and has a low density |
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extensive |
depends on the amount of matter in the sample (mass, volume, calories, ect) |
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intensive |
depends on the type of matter, not the amount present (hardness, density) |
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heterogeneous |
the mixture is not uniform in composition (gravel, soil, sand) |
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homogeneous |
same composition throughout 100% dissolved |
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How is a covalent bond made? |
share overlapped electrons |
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covalent elements |
2 nonmetals |
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covalent bond strength |
weak, break easy |
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covalent MP and BP |
Low |
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covalent electricity |
not conductive |
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covalent solubility in H2O |
poor |
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covalent naming |
prefix |
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How is an Ionic bond made? |
a transfer of valence electrons |
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types of ionic elements |
metal 1st / nonmetal 2nd |
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ionic bond strength |
very strong |
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ionic MP and BP |
high |
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ionic electricity |
only conduct when dissolved in water |
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ionic solubility in H2O |
Most, not ACU |
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ionic naming |
criss cross |
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How is the metallic bond made? |
sea of valance electrons, delocalized |
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types of metallic elements |
2 metals |
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metallic bond strength |
strong |
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metallic MP and BP |
high |
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metallic electricity |
very good |
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metallic solubility in H2O |
NO |
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four groups of the periodic table |
alkali metals, alkaline earth metals, halogens, and noble gasses. |
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What are the blocks of the PT? |
S, D, P, and F block |
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Who is Rutherford and what did he do? |
-gold foil experiment -nucleus is small, dense, and positively charged |
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Why was Dalton wrong? |
the indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons |
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law of conservation of matter |
matter cannot be created or destroyed in a chemical reaction |
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What is density? |
-D= mass/ vol -The degree of compactness of a substance |
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Thompson's model |
-plumb pudding |
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Bohr's model |
-hydrogen atom |
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Dalton's model |
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Rutherford's model |
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significant figures |
give the read an idea of how accurate your measurement is |
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chemical properties |
flammability and corrosion/oxidation resistance |
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chemical change |
-atoms are rearranged -rust, burn, explode, decompose, ferment |
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physical properties |
color, density, hardness |
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physical change |
-change of appearance without change of composition -boil, melt, freeze, cut, bend |
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What is the law of conservation of mass? |
The principle that matter can neither be created nor be destroyed |
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qualitative measurments |
a property that can be observed |
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quantitative measurements |
description of a relevant characteristic involves a numericalmeasurement |
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element information |
-simplest forms of matter -atomic number = protons -#protons = #e- if neutral -mass = p + n |
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number of electrons for ions both positive and negative |
cation + :more protons than electrons anion - :more electrons than protons |
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What is the relative mass of an electron in relation to a proton? |
Neutron = 1 Proton = 0.99862349 Electron = 0.00054386734 |
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monatomic ions |
an ion consisting of a single atom |
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What are the parts of the atoms |
Protons - p+ electrons - e- neutrons - 0 The protons and neutrons cluster together in the central part of the atom, called the nucleus, and the electrons 'orbit' the nucleus |
