Tuesday, 19th last day to improve density summative
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: Which of the following situations provides evidence that a chemical change has taken place?
- Water, when boiled, evaporates and turns into vapor
- Sugar, when added to ice tea, dissolves into the liquid
- Two liquids are mixed, and a solid substance forms
- A piece of paper is cut into many small pieces
Wednesday: Which of the following would indicate the formation of a new substance?
- A liquid turns to a solid
- A sample of metal melts
- Bubbles and fizzing occur
- A solid is dissolved in a liquid
Thursday: A student notices that sugar, when heated over a flame, turns black. How does the student know that a new substance is being formed?
- The temperature of the sugar increases
- The color of the sugar changes to black
- Sugar began to melt within the test tube.
- Sugar started as white crystals
Friday: Looking at this picture, you’ll notice white tablets have been dropped into water that’s equal to the temperature of the room. What evidence would indicate that a chemical reaction is taking place, producing a new substance?
- The tablets dissolve in water
- The water becomes cloudy
- The water level increases slightly
- Bubbles are given off
Monday, students completed their summative.
Tuesday, students were given their scores from Friday’s density summative. Retakes are to be completed by Tuesday, 21st. Reteach times with me are Thursday morning before school and afterschool, Friday after school. Tutorials will end at 4:20. Students can retake the test Weds-Tues. during lunch or after school on Thurs., Fri. or Tues.
They were given time to work in their notebooks, recording the words and definitions of this units’ GKWs. They’ll have an open notes quiz over them this Friday.
Wednesday, 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.
Thursday, after the warm up, students corrected the first 30 problems from Physical and Chemical Properties and Changes. Then they watched a Bill Nye, Chemical Reactions and completed a notes page while watching. Afterwards, students worked with their shoulder buddies and identified about 20 examples as either physical or chemical change. Finally, they were given time to complete the homework, remaining 30 questions. It’ll be due Monday, 18th.
Friday, students worked on their formative: chemical reactions GKWs and on their homework if they completed the formative before end of class.
Monday- Thursday: prepare for Friday’s open notes formative over the GKWs.
Wednesday- Physical and Chemical Properties and Changes (DG), 1-30 due tomorrow.
Thursday- complete part A and B on the Physical and Chemical Properties and Changes (DG), due Monday, 18th.