18015654
Description
Flashcards by Malachy Moran-Tun, updated more than 1 year ago
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Created by Malachy Moran-Tun
about 6 years ago
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| Question | Answer |
| What were the main points of Dolton's Theory on the Atomic Structure? | > All matter is made up of tiny particles called atoms > Atoms cannot be created or destroyed > The atoms in an element are all identical (but each element has its own type of item) > Atoms are tiny, hard spheres that cannot be broken down into smaller parts |
| What was a flaw with Dolton's Theory on the Atomic Structure | > Atoms are not hard > Atoms contain smaller particles (protons, neutrons, electrons) |
| Protons have a Relative Charge of _? | +1 |
| Neutrons have a Relative Charge of _? | 0 |
| Electrons have a Relative Charge of _? | -1 |
| Protons have a Relative Mass of _? | 1 |
| Neutrons have a Relative Mass of _? | 1 |
| Electrons have a Relative Mass of _? | 1 / 1835 (Negligible) |
| Why do subatomic particles not include any units for mass? | The particle's mass is so small that it is impossible to relate it to any measurement (such as grams), so it's relative to each other instead |
| True / False The Atomic Number is always bigger than the Mass Number. | False, the Atomic Number (or Proton Number) is always SMALLER |
| The mass number is all the ______ added up? | Protons and Neutrons |
| On the periodic table, aluminium has the numbers 27 and 13, how many neutrons does it have? | 14 (Mass Number) (Atomic Number or Number of Protons) 27 - 13 = 14 |
| What is an Ion? | An atom with an overall positive or negative charge |
| What are isotopes? | Atoms with the same atomic number but a different mass number. (The same number of protons and electrons, but a different number of neutrons) |
| Bismuth Sulfur Copper Iodine Tennessine | BiSCuITs |
| How do you calculate the relative atomic mass of several isotopes? | The relative abundance (usually percent) multiplied by the mass. e.g: Cl-35 (75%) and Cl-37 (25%) (35 * 0.75) + (37 * 0.25) = 35.5 (IMPORTANT: This is why some elements do NOT have an integer RAM) |
| Why do atoms contain an equal number of protons and electrons? | To make the atom's overall charge neutral |
| How did Thomson's "Plum Pudding" Model for atomic structure improve upon Dalton's Model? | Subatomic particles were introduced, randomly scattered around the atom |
| How did Rutherford's Nuclear Atomic Model improve upon Thomson's "Plum Pudding" Model? | Electrons now orbit the proton in the middle |
| What isn't included in Rutherford's Nuclear Atomic Model? | A nucleus |
| What is an atomic nucleus? | Protons and Neutrons in the centre of the atom |
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