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26 Cards in this Set
- Front
- Back
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List down Group 18 Elements (down the group) (3m) |
- Helium, He - Neon, Ne - Argon, Ar - Krypton, Ra - Xenon, Xe - Radon, Ra |
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The physical state of all Group 18 elements is |
Gas |
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What are the Physical properties of Group 18 elements? Elaborate (5m) |
◾Low melting and boiling points - increases down the group ◾Low density - increases down the group ◾Colourless |
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What is the Chemical property of Group 18 elements? Elaborate with detail (5m) |
◾Inert and Chemically unreactive - achieved stable octet electron arrangement - do not donate electron - do not share electron - outermost shell is full |
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Use of Neon gas and elaborate (2m) |
◾Advertisement signs - glow with reddish-orange colour |
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Use of Argon gas and elaborate (2m) |
◾Fill Filament bulbs - prevent oxidation of filament |
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Aliases of Group 18 elements (2m) |
- Noble gases - Inert gases |
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List down Group 1 elements (down the group) (3m) |
- Lithium, Li - Sodium, Na - Potassium, K |
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What are Physical properties of Group 1 elements? Elaborate (5m) |
◾Low density - increases down the group ◾Low melting point - decreases down the group ◾Soft |
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Why does the atomic size of Group 1 elements increase down the group? (4m) |
◾Number of occupied electron shell increases ◾Nucleic attraction with valence electron decreases ◾Valence electron shell is further away from nucleus ◾Atomic size increases |
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Why does the reactivity/electropositivity of Group 1 elements increase down the group? (5m) |
◾Number of occupied electron shells increases ◾Atomic size increases ◾Electrostatic force between nucleus and valence electron decreases ◾Valence electron becomes easier to donate ◾Reactivity increases |
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What are the Chemical properties of Group 1 elements? Elaborate (6m) |
◾Reacts with Group 17 elements - form salt only ◾React with Oxygen gas - form oxide only ◾React with Water - form hydroxide and hydrogen gas |
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Use of Lithium, Li (1m) |
- Batteries |
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Use of Potassium, K (1m) |
- Explosives |
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Precautions of handling Group 1 elements (2m) |
- Immerse in paraffin oil - Hold with forceps |
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List down Group 17 elements (down the group) (4m) |
- Fluorine, F - Chlorine, Cl - Bromine, Br - Iodine, I |
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What are the Physical properties of Group 17 elements? Elaborate (4m) |
◾Low melting and boiling points - increases down the group ◾Low density - increases down the group |
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Why does the reactivity of Group 17 elements decreases down the group? (6m) |
◾Number of occupied electron shells increases ◾Atomic size increases ◾Distance between valence shell and nucleus increases ◾Electrostatic force between nucleus with valence electron decreases ◾Harder to attract electron to valence shell ◾Reactivity decreases |
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In Period 3, When moving from left to right ( increases or decreases ) ◾Proton number ◾Electronegativity ◾Atomic size (3m) |
◾Proton number increases ◾Electronegativity increases ◾Atomic size increases |
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List down the 3 Types of Oxides (3m) |
- Basic oxides - Amphoteric oxides - Acidic oxides |
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What is basic oxides? Give 2 examples (3m) |
Oxides that dissolve in acids only - Sodium oxide - Magnesium oxide
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What is amphoteric oxides? Give an examples (2m) |
Oxide that dissolve in both acids and alkalis - Aluminium oxide |
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What is acidic oxides? Give 2 examples (3m) |
Oxide that dissolve in acids only - Silicon oxide - Sulphur oxide |
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Why does the atomic size of elements of Period 3 decreases from left to right? (5m) |
◾Number of proton increases ◾Nucleus charge increases ◾Electrostatic force between electron shell becomes stronger ◾Occupied electron shells decreases distance with nucleus ◾Atomic size decreases |
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What are physical properties of Transition Elements? (4m) |
◾High melting point ◾Shiny surface ◾Good conductor of heat and electricity ◾Ductile and Malleable |
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What are special properties of Transition Elements? |
◾Acts as catalysts - Iron powder for Haber Process ◾Different oxidation numbers ◾Complex ions formed |
