1. PHYSICAL SCIENCE Introduction

2. Physical Science CHEMISTRY –Study of matter PHYSICS Study of matter & energy relationships

3. MATTER All matter has volume and mass Amount of space taken upAmount of matter present

4. VOLUME Measuring volume depends on the state of matter LIQUID -Measure volume in a graduated cylinder -SI unit = liter -Read the bottom of the meniscus SOLID -Regularly shaped, use l x w x h - Irregularly shaped, use water displacement GAS - Volume equals the volume of the container Units= cm 3 To compare vol, 1ml = 1cm 3

5. VOLUME Which is the best device to measure the volume of a liquid? Why?

6. VOLUME Practice reading graduated cylinders –The marks, or calibrations, are different numbers on different graduated cylinders http://jchemed.chem.wisc.edu/JCEsoft/Progra ms/VideoCD/CPL/Sample/Modules/gradcyl/gr ad10mL.htmhttp://jchemed.chem.wisc.edu/JCEsoft/Progra ms/VideoCD/CPL/Sample/Modules/gradcyl/gr ad10mL.htm

7. MASS To measure the amount of matter present use a BALANCE –Triple beam vs. digital Tare button- allows measurement of only the contents of a container Units on balances are grams –Gram is about equal to the mass of a paper clip SI unit is a kilogram –1 kg= 2.2 lbs

8. Changes in Mass? Can an object change mass? How?

9. WEIGHT Related to mass, but differs It’s a measure of the force of gravity on matter Gravity is a force of attraction between two objects –All objects in the universe have gravitational forces on other objects –The more matter, the higher the force of gravity So the higher the weight

10. WEIGHT Measured using a spring scale Units are Newtons (N) Would you have the same weight on the Earth as on other planets? Why? Would you have the same mass on the Earth as on other planets? Why?

11. Wrap-up section 1 Complete “Lab Measurements” Go over DRW 2-1 Frayer Model of 1.Physical properties 2.Chemical properties 3.Physical changes 4.Chemical changes

13. Discuss frayer models of 1.Physical properties 2.Chemical properties 3.Physical changes 4.Chemical changes Chem/Phy Prop 1.Vol 2.Flammability 3.Malleability 4.Ductile Do “Mystery Powders” Lab Introduce DENSITY What do we already know?

14. Density If the red spheres have the same mass, which cube weighs more? Why? Which weighs more a pound of feathers or a pound of lead? Weight and density are different!!

15. Computing Density D=m/v or Cover the variable that you are solving for and the correct formula is revealed!

16. Computing Density Units? Sample problems 1. If the density of Al is 2.70 g/cm 3, what mass would 5.0 cm 3 have? 2.What volume would 10.0g of Al occupy? 3. What is the density of a 120.0g block that occupies 6.0cm 3 ?

17. Density lab Name of solid Mass of solid Volume of liquid or formula for volume of solid Volume of liquid + solid or substitution in volume formula Volume of solid Formula to find density Substitution of values into the density formula Density of the solid Add the information in red to your handout.