CURRICULUM | SCIENCE | TECHNOLOGY | ENGINEERING | MATH
“Sometimes it is the people no one can imagine anything of, who do the things no one can imagine.” - Alan Turing
CHANGING MATTER
DAY 2 INSPIRED BY MADELYN PHAM
WARM-UP (7 MIN)
In your notebook, always include the date, the lesson title, and do the warm-up task associated to that date.
Task: *Complete the Musical Warm-Up: "What is that?"*
WARM-UP DISCUSSION (3 MIN)
*What are some characteristics of physical and chemical changes?*
LAB: *ELEPHANT'S TOOTHPASTE* (15 MIN)
In your notebook, always include the date, the lesson title, and do the warm-up task associated to that date. FOR LABS, IF NO SHEET IS PROVIDED, YOU MUST RECORD STEP TITLES AND YOUR ANSWERS IN YOUR SCIENCE NOTEBOOK
Purpose: To understand the energy in chemical changes. During Chemical Changes, energy is released or absorbed. If energy is released, heat (Thermal Energy) and/or light will be give off. This is Exothermic. When energy is absorbed and stored in a new substance, things get cold. This is Endothermic.
Materials: (MAKE SURE YOU DO THIS IN A SINK!)
A plastic bottle
20-volume hydrogen peroxide
1 Tablespoon of dry yeast
3 Tablespoons of warm water
Liquid dish washing soap
Food coloring
Small cup
Safety goggles
Large and Small Graduated cylinders
Procedure:
STEP 1: Pour 100mL of the 20 Volume Hydrogen Peroxide into the bottle.
STEP 2: Add 8 drops of food coloring to the bottle. Do not waste any! Too much will ruin the reaction.
STEP 3: Add 20 mL of Dish Soap to your bottle.
STEP 4: In a separate small cup, combine the warm water and the yeast together and mix for about 30 seconds.
STEP 5: IN THE SINK, pour your yeast mixture into the bottle. Feel free to touch the result with your hands, BUT DO NOT PUT YOUR FINGERS IN THE BOTTLE.
THE NOTES: DAY 1 VOCABULARY (10 MIN)
*Write these down in your notebooks!*
Energy - the ability to do work or cause change.
Temperature - a measure of the average energy of random motion of particles of matter.
Thermal Energy - the total energy of all of the particles in an object.
Endothermic Change - a change in which energy is taken in
Exothermic Change - a change in which energy is released
KEY CONCEPT - Every chemical or physical change in matter includes a change in energy.
EVALUATION (10 MIN)
We'll wrap it up here with today's assessment in your learning management system. Feel free to study your notes and/or the videos below. We always recommend viewing the videos the night before the lesson.