Evidence of Chemical Reactions
Grade 12th Grade · Science · 45 min
What's Included
Learning Objective
Identify substance properties that can be used as evidence that a chemical reaction has occurred. Collect and interpret data on the properties of substances before and after interactions. Determine whether chemical reactions have occurred.
Warm-Up Video
Be Smart · 7:56
6 Chemical Reactions That Changed History
Guided Notes
3 key concepts
- 1
The Maillard reaction involves sugars and amino acids reacting at high temperatures to create complex flavor compounds, making food more enjoyable.
- 2
Alloying copper with elements like tin creates bronze, which is harder and more durable than pure copper, marking an important step in metalworking.
- 3
The Haber-Bosch process is used to convert nitrogen and hydrogen into ammonia, which is then used to make fertilizers that have greatly increased food production.
Practice Questions
9 questions · Multiple choice & Short answer & True/false
Exit Ticket
Quick comprehension check
“A student mixes two clear liquid solutions in a beaker. Which of the following observations would be the BEST evidence that a chemical reaction has occurred? a) The beaker feels slightly warmer to the touch. b) The combined solution is clear. c) A solid substance forms and settles to the bottom of the beaker. d) The total volume of the solution increases slightly.”
Complete Lesson Package
Get all 3 ready-to-use resources:
