'Bonds formed' diaporamas de présentation

Energy and Chemical Reactions

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Energy and Chemical Reactions

750 views • 52 slides

The Chemical Bond

The Chemical Bond. What is a chemical bond?. It is a force of attraction between atoms, ions or molecules. How are bonds formed ?. By electron loss, gain or sharing. Which elements lose electrons?. Metals Cations are formed. Why metals lose electrons ?.

559 views • 43 slides

Ionic, Covalent, & Metallic Compounds

Ionic, Covalent, & Metallic Compounds. Chemical Bonding. Bonds. Chemical Bond attractive force between atoms or ions that binds them together as a unit 3 Types of Bonds Ionic Covalent Metallic. Ionic Bonds. What types of atoms typically form ionic bonds?

308 views • 30 slides

Bond Order, Length, and Energy

Bond Order, Length, and Energy. Bond Order. The number of bonding electron pairs shared by two atoms in a molecule. Can be whole numbers as well as fractional numbers. Draw H2, NH3, and CH4. Each have a bond order of 1 Draw CO2 and C2H4

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Example Problem: TBE

Example Problem: TBE. Determine the enthalpy change that accompanies the reaction below. Use the method of average bond dissociation energies to determine the answer 4 x 414 + 0.5 x 498 = 1905 kJ/mol for bonds broken (this always costs energy, +ve sign)

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