Presentation on theme: "What facets are liquids at room temperature? Two elements are liquid at room temperature (298 K): Bromine (Br), a reddish brown liquid, melts at 265.9."— Presentation transcript:
You are watching: Name two elements that are liquid at room temperature
1 What facets are liquids at room temperature? Two aspects are liquid at room temperature (298 K): Bromine (Br), a reddish brvery own liquid, melts at 265.9 K. Mercury (Hg), a toxic metal, melts at 234.32 K. Four aspects melt just a couple of levels above room temperature: Francium (Fr), a radioenergetic and incredibly reenergetic metal, melts roughly 300 K. Cesium (Cs), a soft steel that violently reacts through water, melts at 301.59 K. Rubidium (Rb), an additional soft reenergetic metal, melts at 312.46 K. Gallium (Ga), a grayish metal, melts at 303.3 K. Gallium"s near-ambient melting point is sometimes demonstrated through a picture of a gallium rod liquefying in someone"s bare hand also.
2 METALS Metal Physical Properties lustrous (shiny) excellent conductors of warmth and also electricity high melting point high thickness (hefty for their size) malleable (have the right to be hammered): Dövülerek kolayca şekil alabilen ductile (have the right to be drawn right into wires): Sünek, şekil verilebilir generally solid at room temperature (an exemption is mercury) opaque as a thin sheet (can not view through metals) metals are sonorous or make a bell-prefer sound when struck Metal Chemical Properties have actually 1-3 electrons in the outer shell of each metal atom corrode quickly (e.g., damaged by oxidation such as tarnish or rust) shed electrons conveniently form oxides that are fundamental have reduced electronegativities are excellent reducing agents Basic Oxides: CaO+H 2 O→Ca(OH) 2 MgO+H 2 O→Mg(OH) 2 Na 2 O+H 2 O→2NaOH
3 Nonmetals Nonsteel Physical Properties not lustrous bad conductors of warm and power nonductile solids brittle solids might be solids, liquids or gases at room temperature transparent as a thin sheet nonmetals are not sonorous Nonsteel Chemical Properties have actually 4-8 electrons in their external shell easily get or share valence electrons develop oxides that are acidic have actually higher electronegativities are excellent oxidizing agents Acidic Oxides: CO 2 +H 2 O→H 2 CO 3 SO 3 +H 2 O→H 2 SO 4
4 Amphoteric oxides are the oxides of weakly electropositive metals. Therefore, the oxides of aluminium oxide, zinc oxide, and tin oxide are amphoteric oxides. These amphoteric oxides react as standard oxides through acids and as acidic oxides via bases. Amphoteric Oxides Zinc oxide In acid: ZnO + 2H + → Zn 2+ + H 2 O In base: ZnO + H 2 O + 2 OH - →
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