1 / 7

DCA Week 6 Review

DCA Week 6 Review. Sept 27, 2013. Definitions:. 1) Elements -Pure Substance -Identical Atoms Examples: O, N, Fe * remember all elements start with1 capital letter 2) Compounds -Not easily separated -Chemically combined Examples: NaCl (salt), H 2 O (water) 3) Mixtures

cole-obrien
Télécharger la présentation

DCA Week 6 Review

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. DCA Week 6 Review Sept 27, 2013

  2. Definitions: 1) Elements -Pure Substance -Identical Atoms Examples: O, N, Fe *remember all elements start with1 capital letter 2) Compounds -Not easily separated -Chemically combined Examples: NaCl (salt), H2O (water) 3) Mixtures -very easy to separate -Each part keeps its own identity and properties -Examples: Trail mix, salads, cereal

  3. Match the following pictures Element Compound Mixture A B C Why do we use models like these when we talk about the atoms in each of them?

  4. Place these in the proper category: Compounds Elements CO2 O2 N H2O NaCl He H2O2 Fe

  5. How Many Different Elements are in each of the following compounds: 1) H2SO4 2) CaCO3 3) C6H10O5 4) H2O2

  6. Most Abundant: • Ocean = Hydrogen • Atmosphere= Nitrogen (78%) • Earth= Oxygen (47%) • Living Matter= Carbon *The Ocean, Atmosphere and Earth all have one element in common: Oxygen

  7. In the Atmosphere: • Carbon Dioxide = CO2 • Oxygen= O2 • Nitrogen= N • Water Vapor= H2O

More Related