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Science - Secondary Curriculum
Science - Chemistry
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Standard 3
Students will understand chemical bonding and the relationship of the type of bonding to the chemical and physical properties of substances.
Objective 3
Relate the properties of simple compounds to the type of bonding, shape of molecules, and intermolecular forces.
 
  • Ammonia, Methane, Water
    Students will compare the shapes of the ammonia, methane, and water molecules.
  • Colorful Lather
    In this activity, students marble paper with shaving cream and food color while exploring water, polarity, and hydrophilic and hydrophobic materials. Although the activity is familiar, it contains a new twist—exploring how a colored shaving cream mixture behaves when a drop of water is added.
  • Comparing Molecules
    Students will compare water, ammonia and methane shapes and resulting polarity by using their text. They will summarize their results on a table. The second part is a newscast the students write showing changes on Earth that would result if water were replaced by ammonia or methane.
  • Grouping Bonds
    Students will group a selection of electron dot structures and determine similarities and differences between covalent and ionic bonding.
  • Ionic or Molecular?
    Students will test and observations six compounds and determine whether they are molecular or ionic. They will test general appearance, melting point and the electrical conductivity of water solutions.
  • I’ve Been Slimed Lab
    Students will conduct a lab making a slime-like material in order to answer the question "How does cross-linking change the properties of a polymer?"
  • K’Nex Hydrogen Bonding
    In this activity, students build models of polarized water molecules using K’Nex toy components and adhesive Velcro. Students investigate hydrogen bonding by shaking the models in various ways. They observe the resulting interactions and relate their observations to physical states of water and the difference between strong bonds and weak attractions.
  • Molecular Modeling
    Students use molecular model kits to visualize molecule shapes, determine polarity of molecules, and to help them draw accurate Lewis structures for various molecules.
  • Polymers: From Chemistry to Global Consequences
    The definition of a polymer is a chain composed of carbon-based molecules called monomers. Examples of polymers can be found in synthetic compounds such as plastics or in natural compounds such as proteins and chitin. The purpose of this lesson is to teach students the nature and properties of polymers, including how to make them and the environmental hazards they produce.
  • Properties of Common Substances
    Students will test the properties of some common substances and use their findings to identify an unknown mixture. They will relate the properties of the substances to the type of bonding they represent.
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