Comparing Densities of Different Solids

Using Data to make predictions and conclusions Material Density Wax 0.86 g/mL White Plastic 0.97 g/mL Water 1.0 g/mL Acrylic (transparent plastic) 1.21 g/mL Aluminum (shiny metal) 2.88 g/mL Density Averages from all classes Fill in the Density Column on the worksheet Fill in the Prediction Column on the worksheet Answer #2 – How did you decide what would sink or float in water?

Observations Fill in the observation Column Answer #4 Wax White plastic Wax Acrylic Aluminum

Isopropyl Extension Use this data to: fill in the blanks on # 5 Make a prediction about whether the wax and clay will float or sink in isopropyl Material Density (g/mL) Isopropyl 0.85 g/mL Wax 0.86 g/mL Clay 1.87 g/mL

Isopropyl Extension Fill in the observation “beaker” Think about why the wax floated in water and sank in isopropyl… What do you need to know other than the density of the wax in order to predict if it will float or sink in a liquid? (#6) Isopropyl Wax Clay

Models - Water Filled in #7 together as a class Clay = most dense  most dots Wax = least dense  least dots

Model – Isopropyl (#8) Use the water as a guide to fill in the model for the isopropyl Fill in #9.