Sugar Phenomena Test
Sugar Observation Timeline
The Objective
Using the understandings (key takeaways) you gained from Mystery Powders 1-2, Water and Electricity 1-3, Steel Wool 1-4, as well as understandings from 6th and 7th grade (forces, energy, particles, etc...) explain the observations of sugar below.
White, sweet, grainy, solid
Before the hotplate is turned on, sugar is a white, sweet, grainy solid
Hot Plate Turned On
Energy is now being transferred to the sugar particles.
Clear, sweet, liquid, tastes like sugar.
Guiding Questions:
What do you think this observation means, why do you think it means this?
What science applies to these observations?
Brown liquid, bubbles forming in the liquid, and water condensing on the walls of the flask
Guiding Questions:
There is a color change at about the same time that water is now appearing.
What do think this means and why do you think that?
How many substances did we start with, how many are here now?
Can you use your understanding of energy to further explain what particles are doing?
Bubbling eventually stops and hard, black solid remains on the foil
What remains on the foil is hard, shiny, and black. It is not gooey or sticky.
Sugar Videos for Observation
SugarHotPlateZOOM.MOVScientific Principles
This Year - Go to the page for the specific activity
Your notebook will also be a good resource
Year's Past
All matter is made of very small particles that are in constant random motion
When particles are forced apart KE is converted to PE
When particle are forced together, PE is converted to KE