1 / 14

OVERALL REACTIVITY TRENDS IONIC & COVALENT COMPOUNDS Section 2.1 and 2.3

OVERALL REACTIVITY TRENDS IONIC & COVALENT COMPOUNDS Section 2.1 and 2.3. METAL REACTIVITY TREND. Right to left: Reactivity INCREASES Top to bottom: Reactivity INCREASES. METAL REACTIVITY TREND (Right to Left: INCREASE). Ex: Na vs Mg Na has one valence electron

jubal
Télécharger la présentation

OVERALL REACTIVITY TRENDS IONIC & COVALENT COMPOUNDS Section 2.1 and 2.3

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. OVERALL REACTIVITY TRENDS IONIC & COVALENT COMPOUNDS Section 2.1 and 2.3

  2. METAL REACTIVITY TREND • Right to left: Reactivity INCREASES • Top to bottom: Reactivity INCREASES

  3. METAL REACTIVITY TREND(Right to Left: INCREASE) • Ex: Na vs Mg • Na has one valence electron • Mg has two valence electrons • It takes LESS ENERGY to remove one electron than 2 electrons • What does this LOOK like?

  4. Mg + water Na + water

  5. METAL REACTIVITY TREND(Top to Bottom: INCREASE) • Na vs K Na K Both have 1valence electron, but… K has 4 rings and Na has 3 rings K is MORE reactive; more likely to give up e-

  6. NON METAL REACTIVITY TREND • Left to right: Reactivity INCREASES • Bottom to top: Reactivity INCREASES

  7. NON METAL REACTIVITY TREND(Left to right: Increase) • Ex: O vs F • O has 6 valence electrons • F has 7 valence electrons • F needs only 1 electron; • Need less energy to gain 1 electron so F is MORE REACTIVE • NOBLE GASES do NOT follow trend

  8. NON METAL REACTIVITY TREND(Bottom to top: Increase) • Cl vs F • Both have 7 valence electrons • F is more reactive because the electrons are closer to the nucleus

  9. IONIC COMPOUNDSSECTION 2.1 • Contain a metal and non-metal • Lattice of ions (endless, repeating pattern) • Na+Cl-Na+Cl-Na+Cl-Na+Cl- Na+Cl-Na+Cl-Na+Cl-Na+Cl- • Extremely stable structures

  10. PROPERTIES of IONIC compounds • Melting and boiling point: extremely high • strong forces holding atoms together • Exist mostly as solids • Brittle • When the structure shifts, similar charges line up

  11. PROPERTIES of IONIC compounds • Soluble in water • Ex: water and salt • Conduct electricity when in solution • Form ions in solution • Ions have a charge and can move around (to conduct)

  12. MOLECULAR COMPOUNDS • Consist of only non-metals held together by COVALENT bonds • Can exist as a solid, liquid or gas • Flexible and softer because of weak forces holding the atoms together Ex: Carbon Dioxide  • Low Melting and boiling points • Do not conduct electricity

  13. COVALENT BONDS • One pair of electrons shared constitues a SINGLE BOND • Two pairs: DOUBLE BOND • Three pairs: TRIPLE BOND • Pair of Electrons involved in bond: BONDING PAIR • Pair of Electrons not involved: • LONE PAIR

  14. HOMEWORK: • Read Pages 52-59 • Read Pages 76-78, 80-81 • Page 59- LC: 1-5 • Page 63- 1-9

More Related