1 / 11

Metals, Metalloids, and Nonmetals

Metals, Metalloids, and Nonmetals. Chemistry PowerPoint # 2. 3 types of elements. Metals Metalloids Nonmetals. Metals. Metal – an element that is a good electrical conductor and a good heat conductor. 4 Physical properties of metals Malleable – can be pounded into shapes

sari
Télécharger la présentation

Metals, Metalloids, and Nonmetals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Metals, Metalloids, and Nonmetals Chemistry PowerPoint # 2

  2. 3 types of elements • Metals • Metalloids • Nonmetals

  3. Metals Metal – an element that is a good electrical conductor and a good heat conductor. 4 Physical properties of metals • Malleable – can be pounded into shapes • Ductile – can be pulled out into long wires • Metallic luster – silver grey • Hardness – varying hardness

  4. What is a good conductor?

  5. Malleable • Malleable – ability to be pounded into shapes.

  6. Ductile • Ductile – ability to be drawn out into a thin wire. http://penforhire.files.wordpress.com/2007/08/2231-stripped-ground-wire.jpg http://www.almaskaran-co.com/en/images/EPQ_Wire.jpg http://shop.rabtron.co.za/catalog/images/EnamelCopperWire.jpg

  7. Metallic Luster • Most metals have a silver/grey luster (or shine) • Gold (Au) and Copper (Cu) – yellow/reddish brown luster http://www.mineralminers.com/html/pytm165b.jpg http://depthome.brooklyn.cuny.edu/geology/core332/images/graphite.jpg

  8. Hardness • Hardness varies • Some can be cut with a butter knife • Others are VERY hard • Most metals have a high melting point – meaning they are solids at room temp. • Mercury (Hg) is the only exception (liquid) http://www.reuk.co.uk/OtherImages/mercury.jpg

  9. Metal Chemical Properties • Reactivity – ability of an element to undergo a chemical change, heat is released. • Na and K very reactive, quickly react (Group 1) • Au and Cr not very reactive, react slowly • Corrosion – deterioration of metals due to reaction with oxygen (Ex. Rust, tarnish) http://metaldetectingworld.com/secrets_cleaning_coins/jetton_uncleaned.jpg http://www.channel4.com/4homes/images/mb/Channel4/4homes/cleaning/Stains/Rust/rust-1-lg.jpg http://cn1.kaboodle.com/hi/img/2/0/0/85/5/AAAAAlo573QAAAAAAIVQkg.jpg?v=1194183634000

  10. http://intro.chem.okstate.edu/1314F00/Lecture/Chapter2/Lec2113.gifhttp://intro.chem.okstate.edu/1314F00/Lecture/Chapter2/Lec2113.gif Metalloids • Metalloids – elements with some characteristics of metals and others of nonmetals. • All are solid at room temp • Used as semiconductors found in electronics http://technicallyphilly.com/wp-content/uploads/2009/02/semiconductors.jpg http://allsemiconductors.info/images/semiconductors/semiconductors_385x261.jpg

  11. Nonmetals Nonmetal – a poor conductor of heat and electricity. (Opposite of a metal) Most are gases at room temperature (low boiling point) A few solids (C, I) – very brittle One liquid (Br) http://allperiodictables.com/ClientPages/AAEpages/AAEpix/Noble_grays.jpg

More Related