31012256
Description
Flashcards by Matthew Bunting, updated more than 1 year ago
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Created by Matthew Bunting
over 3 years ago
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| Question | Answer |
| What is the relative charge and atomic mass of the Proton | Relative charge - +1 Relative atomic mass - 1 |
| What is the relative charge and atomic mass of the electron | Relative charge - -1 Relative atomic mass - 0 |
| What is the relative charge and atomic mass of the neutron | Relative charge - 0 Relative atomic mass - 1 |
| Where are protons and neutrons found | The nucleus |
| Where are the electrons found | The outer shells |
| What number determines the element | The proton number |
| What are isotopes | Isotopes are elements with the same amount of protons but different amounts of neutrons |
| Name features of the plum pudding model | Ball of positive charge with electrons stuck in it No nucleus - solid sphere |
| Name features of the nuclear model | Dense, positively charged centre (most of the mass) Cloud of negative electrons |
| Name features of the early periodic table | Arranged by order of atomic mass Only know elements used Some elements were actually compounds and/or placed in wrong group |
| Name features of Mendeleev’s periodic table | Arranged by order of atomic mass Left gaps and predicted properties of other elements Grouped in similar chemical properties |
| Name features of Modern periodic table | Arranged in order of atomic number Group no. = number of electrons in outer shell. Period = number of shells |
| Metals form what ions | Positive ions |
| What are the diatonic elements | Iodine, hydrogen, nitrogen, chlorine, oxygen, bromine |
| What is the trend in reactivity with group one metals | They increases as you go down the group |
| What is the trend in reactivity with the group 7 metals | They decreases as you go down the group |
| What is the separating method for insoluble solids/liquids | Filtration |
| What is the separating method for two different liquids | distillation |
| What is the separating method for getting a solid, pure soluble salt | Crystallisation |
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