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Chapter 3 Bonds

Chemical Bonds

QuestionAnswer
Chemical Bonds Attractive forces that hold different atoms or ions together in compounds
Compounds Made of two elements
Bond Angles Tell how three or more atoms are oriented in space
Bond Length Distance between the nuclei of two bonded atoms
Models of Compounds Ball-and-stick, Space-filling modelsStructural formula
Ball-and-stick model Atoms are balls; sticks are bonds
Structural formula Chemical symbols represent the atoms
Compounds with network structures Strong solids; Silicon dioxide
Compounds made of networks of bonded ions High melting and boiling points; Quartz, Sodium chloride
Compounds made of molecules Nitrogen, oxygen, carbon dioxide, sugar
Strength of attractions between molecules Solid-strongest; Liquid-next strongest; Gas-weakest
Hydrogen Bonds Attractions between water molecules
Ionic Bonding Formed between oppositely charged ions; transfer of electrons; occurs between metals and non-metals
Ionic Compounds In the form of networks, not molecules
Metallic Bonds Formed by atoms in metals packing electrons close together
Covalent Bonds Formed when atoms share one or more pairs of electrons; occurs between non-metals
Carbon atoms Form four covalent bonds in organic compounds
Hydrocarbon Made of only hydrogen and carbon (methane)
Alkanes Hydrocarbons that have a single covalent bonds (propane)
Polymers Means "many"; Have repeating subunits; natural and man-made
Natural Polymers Wood, cotton, wool, protein, rubber, protein, DNA
Man-made polymers Plastics, fibers
Space-filling model Used to compare sizes of atoms in a molecule
Overall charge in a compound Must be 0
Organic compounds Must contain the element carbon
Alkynes Hydrocarbons that have triple covalent bonds
Alkenes Hydrocarbons that have double covalent bonds
Molecular Formula Tells how many atoms of each type are in one molecule
Created by: dltn_petrysz
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