Practice: According to the table above, how many electrons are required to produce a charge of –2.0 C?
Subjects
| Sections | |||
|---|---|---|---|
| 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 Guides |
|---|
| Periodic table Charges (IGNORE) |
| Calculating Molar Mass (IGNORE) |
| Calculating Grams to Moles (IGNORE) |
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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