1. Topic: Measurement Aim: How can we measure mass and temperature? Do Now: Scientific Method questions (Hand in Lab Safety Activity) HW:

2. 10 cm 9 cm 8 cm V = L x W x H V = 10cm x 8cm x 9cm V = 720 cm 3

4. Example: V1 =11.5 mLV2 = 20 mL V = 20 –11.5 V = 8.5 mL

5. Amount of matter in an object Grams (g) TRIPLE BEAM BALANCE Mass

7. http://www.ohaus.com/input/tutorials/tbb/TBBins.html

10. Mass = 542 gm

11. 172 g http://www.wisc-online.com/objects/ViewObject.aspx?ID=gch202

12. Measures temperature Tube filled with a fluid such as alcohol Thermometer

14. 1.Fahrenheit Scale: Non-metric temp scale °F°F 2 scales used to measure temperature

15. Water freezes = 32°F Water boils = 212°F Human body temp = 98.6°F

16. 2.Celsius Scale: Metric scale °C°C

17. Water freezes = 0°C Water boils = 100°C Human body temp = 37°C

18. Measuring with a thermometer 24°C

19. Let’s summarize… 1.What is the name of the instrument used to measure mass? 2.Identify the units used to measure mass. 3.What instrument is used to measure temperature? 4.Identify the two temperature scales used. Explain the difference between the two scales.

20. Mass = 137.4 gm

21. Mass = 25.4 gm

22. Mass = 79.4 gm

23. Review: 1. Which piece of laboratory equipment would be used to obtain the most accurate measure of the volume of a glucose solution? a.triple beam balance b.graduated cylinder c.beaker d.metric ruler

24. 2. Which piece of equipment could be used to determine the mass of a frog? a.triple beam balance b.graduated cylinder c.beaker d.metric ruler

25. 3. Mass is best defined as the a.size of an object b.density of an object c.amount of matter in an object d.weight of an object

26. 4. The amount of space an object takes up is known as its a.mass b.density c.volume d.matter

27. 5. The units for the volume of a solid is a.mL b.mm c.L d.cm 3

28. 6. The basic unit of volume in the metric system is the a.kilogram b.gallon c.liter d.mass

29. 7. The basic unit of mass in the metric system is the a.kilogram b.gallon c.liter d.meter

30. 8. To measure the volume of an irregular solid, a student can use a.a triple beam balance b.a beaker c.displacement in a graduated cylinder d.a thermometer

31. 9. The volume of a liquid is 13.0 mL. What must a student do to obtain a volume of 12.5 mL of liquid in the graduated cylinder? a.Add 0.5 mL of liquid. b.Add 1.5 mL of liquid. c.Remove 0.5 mL of liquid. d.Remove 1.5 mL of liquid.