Chemical reactions happen all around us, but they occur at a molecular level to small to see with the naked eye. This unit will teach your students the physical signs that indicate a chemical reaction is occurring and the mathematical models that will help them better understand what is happening chemically during those reactions.
Learning Objectives:
- Students will know that chemical reactions result in physical changes to substances that can be identified.
- Students will know the parts of a chemical equation.
- Students will be able to determine the number of atoms of each element in a chemical equation.
- Students will understand how the Law of Conservation of Mass applies to chemical reactions.
Students Will:
- know that a chemical reaction is a process in which one or more substances change to make a new substance.
- accurately identify the physical signs that indicate a chemical reaction has occurred.
- be able to distinguish between a physical change and a chemical change.
- know that the element symbols from the periodic table are used to represent the types of atoms in a chemical formula.
- know the difference between a reactant and a product in a chemical reaction and will be able to identify each.
- know that coefficients represent how many molecules of a compound are in a chemical formula.
- know that subscripts represent how many atoms of a particular element are in a compound.
- know how to use coefficients and subscripts to accurately count how many atoms are in a compound.
- understand that The Law of Conservation of Mass means that the total number of atoms on the reactant side of a chemical equation must be equal to the total number of atoms on the product side.
- be able to accurately balance simple chemical equations.
Suggested Materials:
- Computer and Projector for Videos/Presentations
- Student Access to Internet
- Lab Supplies:
- Lab 1: Is It A Chemical Reactions
- Soda (Personal Size Bottle; 1 per lab group)
- Pop Rocks (1 small packet per lab group)
- Funnel (1 per lab group)
- String (31cm/12” per group)
- Ruler (1 per lab group)
- Thermometer (1 per lab group)
- Lab 2: Baking Soda and Vinegar Reaction
- Erlenmeyer Flask: approximately 125 mL (1 per lab group)
- Baking Soda (1 Tablespoon / 15 grams per lab group)
- Vinegar (1/2 cup / 100 mL per lab group
- Funnel (1 per lab group)
- String (31cm/12” per group)
- Ruler (1 per lab group)
- Thermometer (1 per lab group)
- Litmus Paper (3 pieces per lab group)
- Lab 1: Is It A Chemical Reactions
Pacing: 8 Days
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