Practice: According to the table above, how many electrons are required to produce a charge of –2.0 C?
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The Atom | 10 mins | 0 completed | Learn |
Subatomic Particles | 17 mins | 0 completed | Learn |
Isotopes | 17 mins | 0 completed | Learn Summary |
Ions | 28 mins | 0 completed | Learn |
Atomic Mass | 23 mins | 0 completed | Learn |
Periodic Table: Classifications | 11 mins | 0 completed | Learn |
Periodic Table: Group Names | 9 mins | 0 completed | Learn |
Periodic Table: Representative Elements & Transition Metals | 7 mins | 0 completed | Learn |
Periodic Table: Element Symbols | 7 mins | 0 completed | Learn |
Periodic Table: Elemental Forms | 6 mins | 0 completed | Learn |
Periodic Table: Phases | 9 mins | 0 completed | Learn |
Periodic Table: Charges | 20 mins | 0 completed | Learn |
Calculating Molar Mass | 10 mins | 0 completed | Learn |
Mole Concept | 38 mins | 0 completed | Learn Summary |
Law of Conservation of Mass | 6 mins | 0 completed | Learn |
Law of Definite Proportions | 10 mins | 0 completed | Learn |
Atomic Theory | 10 mins | 0 completed | Learn |
Law of Multiple Proportions | 6 mins | 0 completed | Learn |
Millikan Oil Drop Experiment | 9 mins | 0 completed | Learn |
Rutherford Gold Foil Experiment | 10 mins | 0 completed | Learn |
Additional Practice |
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Thomson's Cathode Ray Tube Experiment |
The Chadwick Neutron Experiment |
Mass Spectrometry |
Additional Guides |
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Periodic table Charges (ignore) |
Calculating Molar Mass (ignore) |
Calculating Grams to Moles |
The atom is composed of 3 subatomic particles: neutrons, protons, and electrons.
In terms of size, neutrons are the largest, protons are slightly smaller, and the electrons are the smallest.
Concept #1: The 3 subatomic particles share key differences and similarities in their masses and charges.
Example #1: Osmium, one of the densest elements on earth, has an actual mass of 190.23 grams. According to the table above, what is its value in terms of atomic mass units?
Practice: According to the table above, how many electrons are required to produce a charge of –2.0 C?
Practice: If the charge and mass of one proton is 1.60218 x 10-19 C and 1.673 x 10-30 g respectively, what is the charge of 378 kg of protons?
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