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42 Cards in this Set
- Front
- Back
- 3rd side (hint)
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What is matter? |
Particles taking up space |
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4 classes of matter |
Elements, compounds, mixtures, solutions |
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Elements |
Pure atoms |
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Compounds |
Pure molecules |
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Mixtures |
Heterogeneous (can see the difference, not completely mixed) |
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Solution |
Homogeneous (Cannot see difference, completely mixed) |
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Mass |
Grams |
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Length |
Meters |
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Temperature |
Kelvin (or Celsius) |
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# of particules |
Moles |
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Time |
Seconds |
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Volume |
mL or cm^3 |
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Density |
(g/mL) Mass over Volume |
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Zero Sig Figs Rules |
Front never, middle always, end only if theres a decimal |
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How many sig figs - 2000 |
1 |
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How many sig figs - 2000. |
4 |
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How many sig figs - 0.0009 |
1 |
Zeros appearing in front of all nonzero figures are not significant |
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How many sig figs - 9.000,000,000 |
10 |
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Nucleus |
Center, protons & neutrons |
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What dicate an atom's identity? |
Protons |
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What holds nuclear particles together? |
Nuclear forces |
Short range. Proton-neutron, proton-proton, neutron-neutron |
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Relative mass of electrons in amu |
0.000,5486 |
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Relative mass of protons in amu |
1.007,276 |
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Relative mass of neutrons in amu |
1.008,665 |
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Mole |
Special unit used to express amounts of particles like atoms and molecules |
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Nuclide |
General term for a specific isotope of an element |
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Mole |
The SI unit for amount of substance |
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Avogadro's Number |
6.022 141 79 × 10^23 -the number of particles in exactly one mole of a pure substance |
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Molar Mass |
The mass of one mole of a pure suvstance is called the molar mass of that substance |
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Order of electron configurations |
That ^ |
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Metallic Characteristics |
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Valence e- |
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Atomic Radius |
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Ionization Energy |
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Electron Affinity |
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Electronegativity |
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Nonpolar Covalent |
Equal sharing of electrons to create full outershell |
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Covalent |
Sharing valence electrons |
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Polar Covalent |
Partial sharing of electrons, creating some attraction |
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Ionic |
Complete transfer of electron creating ions |
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Percent comp. Formula |
Mass of element over mass of compount x 100 |
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Percent comp example |
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