Class Summary Table (5th) Negotiating ideas and evidence through task

Task Number and What we learned from this task. How it helps us explain the anchoring Name phenomenon?

Task 1 -Temperature is the speed of particles -Brinicles have heat Temperature, heat, -Heat is the speed and mass (number of -Brine, seawater, and ice have different and energy particles) in a system amounts of heat -Cold things have heat

Task 2 -Adding or removing energy can cause -Energy is being transferred from the Icy Hot and Liquid Cool the intermolecular forces between seawater to the brine and this causes the particles to break or form seawater to freeze -During phase changes temperature -When the seawater freezes it is slowing the does not change particles and allowing intermolecular forces to -When things cool down they release reform energy -When things heat up energy is being absorbed -Energy also causes particles to speed up or slow down -Thermal energy is stored in the motion of particles -Phase energy is stored in the arrangement of particles Task 3: -Liquid water is more dense than ice -What ice looks like at the particle level will Water’s Wacky Ways -Water forms hydrogen bonds help with final model -liquid water and solid water look -Ice floats so it can hold the brine on top of different at the particle level the water -Solid water forms hexagon rings -The oxygen have a slightly negative charge, -Surface tension is created by hydrogen while the hydrogens have a slightly positive bonds charge -Cohesion is when particles are attracted to the same type of particles -Adhesion is when particles are attracted to something else

Task 4: -Saltwater doesn’t completely freeze -Source of brine is sea ice Seawater ice vs because of the brine channels -Sea ice cracks and releases brine freshwater ice -Brine is created when seawater freezes -Brine doesn’t freeze, stays liquid -Brine can make its way through the sea -Brinicle is hollow ice via the channels -Salt lowers the freezing point of water -microorganisms live in the brine channels

Task 5: -Salt lowers the freezing point of water -Brine can freeze saltwater because is saltier Freezing Point (freezing point depression) (colder) Depression -The molecular structure of brine (key -Brine doesn’t freeze due to freezing point concept 18) depression -The more salt added the lower the - freezing point -Brine is more dense so it sinks (key concept 18) -Sodium is positive and chlorine is negative -The oxygen in water(-) is attracted the sodium(+) and the hydrogen(+) is attracted to the chlorine (-) -Water molecules break up the salt (charges)

Task 6: -In a heating curve energy is being -Seawater releases energy which causes the Heating and Cooling absorbed particles to slow down and then change Curve Connections -In a cooling curve energy is being phase to a solid released -Brine is absorbing energy and the energy -Heating curves and cooling curves makes the particles move faster show when phase change occurs as -Brine will be a liquid when seawater is a energy is added or removed from the solid system

Task 7: -When energy is lost from one system it -Energy is transferred from the seawater to Energy Bar Charts is gained by another the brine -Water can evaporate without -The energy that is transferred to the brine is temperature change stored as thermal -When energy is transferred it can go -The energy that is released from the into any storage account seawater was stored as phase and thermal