Chapter 2 Lesson 2: Water Density 5th Grade Science

What is Matter? Matter Mass Volume Weight Anything that has mass and volume Mass The amount of matter in an object Volume The amount of space taken up by an object Weight How strongly gravity pulls on an object

Weight can change, Mass stays the same

Density = Mass (g) Volume (cm3) What is Density Density The amount of mass in a given amount of space 1 cubic centimeter(cm3) = 1 milliliter(ml) Density = Mass (g) Volume (cm3)

End Questions What is the density of an object with a mass of 100g and a volume of 25cm3? What is the Density of a rock if its Mass is 75g and its density is 5g/ml? What is the volume of an object that has a mass of 12g and a density of 4g/cm3?

Activity Question – Hypothesis – Supplies – Procedure – Conclusion – Mass (g) Volume (ml) Density (g/ml) Ping Pong Ball Golf Ball Tennis Ball Styrofoam Ball Marble Activity Question – Hypothesis – Supplies – Procedure – Conclusion – Density = Mass (g) Volume (ml)

End Questions What is the density of an object with a mass of 56g and a volume of 7cm3? What is the density of a rock if its Mass is 100g and its volume is 10g/ml? What is the volume of an object that has a mass of 16g and a density of 8g/cm3?

Demonstration Question – Hypothesis – Supplies – Procedure – Mass (g) Volume (ml) Density (g/ml) Syrup Vegetable Oil Water Rubbing Alcohol Demonstration Question – Hypothesis – Supplies – Procedure – Conclusion – Density = Mass (g) Volume (ml)

Warm Water vs Cold Thermal Expansion Objects take up more volume when they get warmer Warm water becomes less dense than cold Water is special. It expands when it gets colder. The mass of the water doesn’t change