Calculate density to identify an unknown substance
warm up: (engaging activities to set up class time)
Monday- Density is calculated by dividing the mass of a substance by its –
Tuesday, The density of water is 1 g/cm³. A substance will float if its density is less than that of water. Which of the following substances will float? What’s the density of the substance that will float?
activity: (what we do in class)
Monday: After the warm up and introducing our new unit, How Dense is It? We went over Friday’s summative, It’s Classified: elements, compounds, metals and more. The deadline for retaking the summative is Monday, Nov. 5th. My reteach day is Tuesday, 30th after school. Retakes can be made Weds.-Mon. during lunch, after school on Weds. or Fri., or during advisory on Thur. or Fri.
Tuesday, students watched a BrainPop, learning from Tim and Moby what density is and how to calculate it. Afterwards, they were given a Fill in the Blanks Notes for finding Density. They glued them into their notebooks for reference.
Wednesday- Thursday Students were given several cubes made of various substances. They worked as a team to find these physical properties of the cubes: mass, volume and density. They recorded their findings in their notebooks. Finally, they were given a table of substances that were used to make each cube and it’s density. Using their data and the table, they were able to identify the cube’s substance.
Friday, students continued to build their knowledge of calculating density using irregular shapes. They watched this fun Ted Talk, How Taking a Bath Led to Archimedes’ Principle. Afterwards, they were given some irregular shapes and time to find their densities. They’re recording their discoveries in their notebooks. They’ll finish this up on Monday, 5th.