Presentation ~ above theme: \"What elements are liquids in ~ room temperature? Two facets are liquid at room temperature (298 K): Bromine (Br), a red brown liquid, melts in ~ 265.9.\"— Presentation transcript:




You are watching: Name two elements that are liquid at room temperature

1 What aspects are liquids in ~ room temperature? Two facets are fluid at room temperature (298 K): Bromine (Br), a red brown liquid, melts at 265.9 K. Mercury (Hg), a toxic metal, melts in ~ 234.32 K. Four facets melt simply a few degrees above room temperature: Francium (Fr), a radioactive and extremely reactive metal, melts approximately 300 K. Cesium (Cs), a soft metal that violently reacts v water, melts at 301.59 K. Rubidium (Rb), an additional soft reactive metal, melts in ~ 312.46 K. Gallium (Ga), a grayish metal, melts at 303.3 K. Gallium\"s near-ambient melting allude is occasionally demonstrated v a photo of a gallium stick liquefying in someone\"s ceiling hand.

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2 METALS steel Physical properties lustrous (shiny) an excellent conductors of heat and also electricity high melting point high density (heavy for their size) easy (can be hammered): Dövülerek kolayca şekil alabilen ductile (can be drawn into wires): Sünek, şekil verilebilir normally solid in ~ room temperature (an exemption is mercury) opaque as a slim sheet (can\"t see with metals) metals are sonorous or make a bell-like sound when struck steel Chemical Properties have 1-3 electron in the outer shell that each metal atom corrode easily (e.g., damaged through oxidation such as tarnish or rust) lose electrons easily type oxides that are straightforward have reduced electronegativities are an excellent reducing agents an easy Oxides: CaO+H 2 O→Ca(OH) 2 MgO+H 2 O→Mg(OH) 2 Na 2 O+H 2 O→2NaOH

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3 Nonmetals Nonmetal physical Properties not lustrous negative conductors the heat and also electricity nonductile solids brittle solids might be solids, liquids or gases in ~ room temperature transparent as a thin sheet nonmetals are not sonorous Nonmetal chemistry Properties have 4-8 electrons in their outer shell readily gain or re-superstructure valence electrons type oxides that are acidic have greater electronegativities are an excellent oxidizing agents Acidic Oxides: CO 2 +H 2 O→H 2 CO 3 therefore 3 +H 2 O→H 2 so 4

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4 Amphoteric oxides are the oxides that weakly electropositive metals. Thus, the oxides that aluminium oxide, zinc oxide, and tin oxide room amphoteric oxides. This amphoteric oxides reaction as straightforward oxides through acids and also as acidic oxides through bases. Amphoteric Oxides Zinc oxide In acid: ZnO + 2H + → Zn 2+ + H 2 O In base: ZnO + H 2 O + 2 five - → 2- Aluminium oxide In acid: Al 2 O 3 + 3 H 2 O + 6 H 3 O + (aq) → 2 3+ (aq) In base: Al 2 O 3 + 3 H 2 O + 2 five - (aq) → 2 - (aq)

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2- Aluminium oxide In acid: Al 2 O H 2 O + 6 H 3 O + (aq) → 2 3+ (aq) In base: Al 2 O H 2 O + 2 five - (aq) → 2 - (aq).\">


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