Students examine and discuss the concepts of diffusion and osmosis. They observe the effects of diffusion on eggs by recording the change in an egg's size and the amount of liquid substance that remains.
8th - 12th Science 12 Views 66 Downloads
How do Hypotonic, Hypertonic, and Isotonic Solutions Affect the Water Movement of a Cell?
After removing the shell from a raw egg, cell biologists soak the egg in either a hypotonic, hypertonic, or isotonic corn syrup solution. They calculate the percent change in mass and compare it to the strength of the solution in a...
7th - 12th Science
Explaining Change Processes Using a Simple Particle Model of Matter
The more things change, the more they stay the same. This unit includes seven lessons starting with physical change and moving through to chemical change. Conservation of matter is explained clearly with multiple hands-on activities and...
6th - 8th Science CCSS: Adaptable
New Review The Big Picture on Biodiversity and Climate Change
Let's leave climate change arguments up to the seasoned scientists. A change in biodiversity due to changing temperature can lead to, what, exactly? Through a series of discussions, activities, and observations, pupils connect climate...
9th - 10th Science CCSS: Adaptable
Cell Size and Shape; Diffusion and Osmosis Processes
Use salmon eggs as a cell model for demonstrating the movement of water over concentration gradients. Junior scientists examine the same process microscopically with an onion cell. They use a thistle tube and a semipermeable membrane to...
9th - 12th Science
How to Unboil an Egg
If you believe hard boiling an egg to be an irreversible process, then think again! Take a few minutes to watch this fun video as it explores the process for unboiling an egg and learn about the applications this process may have in the...
4 mins 6th - 12th Science CCSS: Adaptable