Ch 03 - Metals and Non-metals10th Science
Malleability & Ductility
Define the physical properties of malleability and ductility in metals. Which metal is the most ductile?
Define the physical properties of malleability and ductility in metals. Which metal is the most ductile?
- Malleability: The ability of metals to be beaten into incredibly thin sheets. (Gold and silver are the most malleable).
- Ductility: The ability of metals to be drawn into thin wires.
- Extreme Example: Gold is the most ductile metal. A single gram of gold can be drawn into a wire approximately 2 km long.
Prism Memory Hook
MD-SW: Malleable = Sheets, Ductile = Wires
Exceptions in Physical States
Generally, metals are solids and non-metals are either solids or gases at room temperature. What are the two strict exceptions to this rule?
Generally, metals are solids and non-metals are either solids or gases at room temperature. What are the two strict exceptions to this rule?
- Metal Exception: Mercury strictly exists as a liquid at room temperature.
- Non-Metal Exception: Bromine is the only non-metal that strictly exists as a liquid at room temperature.
Prism Memory Hook
A premium mnemonic for this topic is available in the Prism App.
Exceptions in Melting Points
Metals typically have very high melting points. Which two specific metals have melting points so extraordinarily low that they will melt if kept on your palm?
Metals typically have very high melting points. Which two specific metals have melting points so extraordinarily low that they will melt if kept on your palm?
- Gallium and Caesium.
- Despite being metals, their intermolecular forces are so weak that the ambient heat from a human hand is strictly enough to cross their melting point thresholds.
Prism Memory Hook
Ga-Cs: Gallium and Caesium melt in your palm.
Also in this chapter
44 more cards to study in Prism
- 4Anomalies in Non-Metals
- 5Combustion of Metals in Air
- 6Electric Wire Coatings
- 7Nature of Metal vs Non-Metal Oxides
- 8Reactions of Amphoteric Aluminium Oxide
- 9Metal Oxides Dissolving to Alkalis
- 10Amphoteric Oxides
- 11Violent Reaction of Potassium with Water
- 12Anodising & Natural Oxide Layers
- 13Action of Sulphur Dioxide on Litmus
- 14Metals Reacting Strictly with Steam
- 15Storage of Highly Reactive Metals
- 16Buoyancy of Calcium and Magnesium during Reaction
- 17Metal Displacement Reaction
- 18Metals Unreactive with Water
- 19Reactivity Order with Dilute HCl
- 20The Nitric Acid Exception
- 21Aqua Regia (Royal Water)
- 22The Reactivity Series of Metals
- 23Extraction of Mercury (Low Reactivity)
- 24Electron Dot Structure of Ionic Compounds
- 25Chemical Equations for Roasting & Calcination
- 26Formation of Ionic Bonds
- 27The Thermit Reaction
- 28Physical Nature & MP/BP of Ionic Compounds
- 29Electrical Conductivity of Ionic Compounds
- 30Electrolytic Reduction of Sodium
- 31Minerals, Ores, and Gangue
- 32Roasting vs. Calcination
- 33Extraction of Highly Reactive Metals
- 34Electrolytic Refining & Anode Mud
- 35Reaction of Calcium and Sodium with Water
- 36Corrosion of Silver and Copper
- 37Cleaning Tarnished Copper Vessels
- 38Conditions for Rusting of Iron
- 39Reduction of Zinc Oxide with Carbon
- 40Galvanisation
- 41Displacement by Aluminium (Manganese Extraction)
- 42Food Can Coating (Tin vs Zinc)
- 43Alloys and Amalgams
- 44Alloying of Iron
- 4524 Carat vs 22 Carat Gold
- 46Common Alloys: Brass, Bronze & Solder
- 47The Iron Pillar of Delhi
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