goal for the week: identify the formation of a new substance by using the evidence of a possible chemical change such as production of a gas, change in temperature, production of a precipitate, or color change
Monday:Before going to school, a student cuts a ripe apple into six slices and places them in a plastic bag. During lunch, the student observes that the apple slices now have brown spots. Which of the following indicates a chemical change in the apple?
- Cutting the apple into six slices
- Changing color of the apple
- Placing the slices in a plastic bag
- Removing brown spots with a knife
Tuesday: Define chemical change and physical change.
A chemical change is when chemical bonds of molecules are made or broken in order to create a new molecule. This type of change is typically difficult to reverse. A physical change is when molecules can move from one physical state to another (phase change) and not change their atomic structure. This change is typically easy to reverse.
Wednesday: students watched a demo of water and blue food coloring being mixed and needed to decide if it was an example of a physical or chemical change and explain why they chose. Afterwards, they needed to decide if mixing bleach into the water and food coloring was a physical or chemical change and why.
Monday, students were given their scores from Friday’s density summative. Retakes are to be completed by Monday, 26th of October. Reteach times with me are tomorrow and Friday after school till 4:20. Students can retake the test with Mr. Alexander in the morning on Tues, Weds. and Friday of this week and Monday upon return from Thanksgiving break; after school with me on Tues. and Fri of this week; or during advisory on Thurs. or Fri. of this week.
They were given time to work in their notebooks, recording the words and definitions of this units’ GKWs. They’ll have a quiz over them this Friday. Most likely they’ll not be able to use notes.
Tuesday, students watched a StudyJam, found on my Google Classroom and a BrainPop on Physical vs Chemical Changes. After watching BrainPop, students completed some simple notes also found on Google Classroom. Finally, students were given their homework, Physical and Chemical Properties and Changes. The first 30 problems are due tomorrow. This too is on my Google Classroom. The entire page, front and back are due this Friday for a daily grade.
Wednesday, after the warm up and the discussion that followed, we went over their homework. Finally, students worked with their shoulder buddies and identified about 20 examples as either physical or chemical change. They recorded their data in their notebooks. We’ll complete the activity tomorrow with follow up questions.
Monday- Thursday: prepare for Friday’s formative over the GKWs.
Tuesday- Physical and Chemical Properties and Changes, 1-30 due tomorrow.
Wednesday- complete part A and B on the Physical and Chemical Properties and Changes, due tomorrow.