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Types of Reactions Lab Demonstration
Submitted by: Brianne R
Recommended Grade Level(s):
Appropriate for: Grade 9 Physical Science
Grades 10–12 Chemistry
Time Requirements:
Prep Time: 30 minutes
Activity Time: 50 minutes
Teaching Topics & Concepts:
Balancing and classifying types of reactions
National Science Standards Alignment
MS-PS1-5. Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus
mass is conserved. Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a
chemical reaction. HS-PS1-7.
Materials:
• Magnesium Ribbon
• Bunsen burner
• Watch glass
• Tongs
• Test tube rack
• Test tubes
• 1M KI
• Lead(II) Nitrate solution
• Disposal container for lead
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Safety
• Read the SDS sheets for all chemicals before using them.
• Wear safety glasses at all times
• Hydrochloric acid is a highly corrosive, strong inorganic/mineral acid. If not stored and handled properly,
this can pose a serious threat to the health and safety of laboratory personnel
• CAUTION: DO NOT POUR IN SINK!!!! LEAD IS TOXIC!!!
• CAUTION: Magnesium burns extremely bright and hot. Do not look directly at it while it's burning as
it can damage vision. See our additional safety tips to keep your students safe and reduce your own
liability.
• Hydrogen peroxide can cause irritation to the eyes, nose, skin, and throat
!
• 25 mL Erlenmeyer flask
• 400 mL beaker
• Dish soap
• Food coloring
• Wood splints
• Magnesium shavings
• 3M HCl
• Lighter
• 30% H2O2
