Karteikarten
Topic 1 - Atomic Structure and Periodic Table
Karten in diesem Stapel (61)
- 1What's an atom?All substances are made of atoms. An atom is the smallest part of an element that can exist.
- 2How many different elements are there?100
- 3What are formed when elements react?Compounds
- 4What happens in a chemical reaction?New substances are formed
- 5What's a compound?Two or more elements chemically combined
- 6Compounds can only be seperated into their elements by..?Chemical reactions
- 7What's a mixture?Two or more elements or compounds not chemically combined
- 8Dalton's atomic model?Atoms are tiny sheres that can't be divided
- 9Plum pudding model?Ball of positive chareg with negative electrons embedded
- 10Nuclear model?Small, dense, positive nucleus. Electrons outside the nucleus. Most of the atom is empty space
- 11How did Nils Bohr adapt the nuclear model?Electrons orbit the nucleus at specific distances
- 12Order of subatomic particle discovery?Electron, proton, neutron
- 13Who discovered the neutron?James Chadwick
- 14Charge on a proton?+1
- 15Charge on a neutron?0
- 16Charge on an electron?-1
- 17Why do atoms have no overall charge?Number of protons = number of neutrons
- 18Atomic numberNumber of protons
- 19Atoms of the same element have the same number of..Protons
- 20Atomic radius0.1nm (1x10-10m)
- 21Nuclear radius1x10-14m
- 22Relative mass of a proton?1
- 23Relative mass of a neutron?1
- 24Relative mass of an electron?Very small
- 25Mass numberProtons + neutrons
- 26IsotopesAtoms with same number of protons, different number of neutrons
- 27Relative Atomic MassAverage mass of all the atoms of an element (takes into account abundance)
- 28In which order do electron shells fill?From nearest the nucleus outwards
- 29Which electron shells have lowest energy?Nearest the nucleus
- 30In the modern periodic table, elements are arranged in order of..Atomic number
- 31What are the columns on the periodic table called?Groups
- 32What are the rows on the periodic table called?Periods
- 33Elements in the same group have…Similar properties
- 34Atoms of the elements in the same group have…Same number of electrons in their outer shell
- 35How did Mendeleev mostly order the elements in his periodic table?By atomic weight
- 36What two things did Mendeleev do in the design of his table?Leave gaps for undiscovered elements, changed the order of some elements
- 37Why was Mendellev's table accepted?He predicted properties of undiscovered elements. When they were discovered their properties matched his predictions
- 38What charge ions do metals form?Positive
- 39Most of the elements in the periodic table are…Metals
- 40Where are non-metals in the periodic table?Top right
- 41What is the name of Group 0?Noble Gases
- 42Why are Noble Gases unreactive?They have stable electron arrangements
- 43Trend in Noble Gas boiling points?Increases with increasing relative atomic mass (i.e. going down the group)
- 44What is the name of Group 1?Alkali Metals
- 45How many electrons do alkali metals have in their outside shell?1
- 46Alkali metal + oxygen →Metal oxide
- 47Alkali metal + water →Metal hydroxide + hydrogen
- 48Alkali metals react with halogens to form…Salts
- 49How does reactivity of alkali metal change as you go down the group?Increases
- 50What is the name of Group 7?Halogens
- 51How many electrons do halgens have in their outside shells?7
- 52As elements, halogens exist as…Diatomic molecules
- 53Halogens react with non-metals to form…Covalent molecules
- 54Halogens react with hydrogen to form…Hydrogen halides which dissolve in water to form acids
- 55Trend in halogen melting and boiling points?Increase with increasing relative formula mass (down the group)
- 56How does reactivity of halogens change as you go down the group?Decreases
- 57A more reactive halogen can…Displace a less reactive halogen from its aqueous salt
- 58Compared to alkali metals, transition metals…Less reactive, higher melting points, stronger and harder
- 59Transition metals can form ions with…Different charges
- 60Appearance of transition metal compoundsColoured solids and coloured solutions
- 61Transition metal and their compounds are useful as…Catalysts
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- GCSE Chemistry Karteikarten am Topic 1 - Atomic Structure and Periodic Table, erstellt von Mark Smith am 22/10/2024.
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- Mark Smith
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