1. Get out your Lab Notebook
While you are waiting to be checked off:
1. Write the objectives, and pass in your Journal entry
2. Read the Observation paragraph and Research summary instructions
3. What tool is used to measure liquid volume?

2. Review of Mass and Volume
T. Trimpe

3. The amount of matter in an object
Mass definition
The amount of matter in an object

4. Units
Grams

5. Tools
Scale or balance

6. The amount of space an object takes up
Volume definition
The amount of space an object takes up

7. Units
Solid Volume: cm3
Liquid Volume: mL
1 mL = 1 cm3

8. Tools Liquid Volume: graduated cylinder Regular solid volume: ruler
Irregular solid volume: graduated cylinder

9. 3 methods for measuring volume
1. Direct measurement- volume of liquids
2. L x W x H – volume of regular solids
3. Water displacement- volume of irregular solids

10. Kilogram Prototype Image - http://en.wikipedia.org/wiki/Kilogram
Mass kg g cg mg
Mass refers to the amount of matter in an object.
The base unit of mass in the metric system is the gram and is represented by g. Since a gram is so small, we usually use kilograms, represented by kg. Mass is measured with a scale.
Kilogram Prototype
When measuring mass, find the mass by weighing the object on the digital scale. Or, find the mass by using the balance.
Kilogram Prototype Image -

11. kL cL mL L Volume Volume is the amount of space an object takes up.
The base unit of volume in the metric system in the liter and is represented by L. When talking about solid volume we use cubic centimeters, represented by cm3
Metric Units
1 liter (L) = 1000 milliliters (mL)
1 milliliter (mL) = 1 cm3 (or cc) = 1 gram*
* When referring to water Liter Image:

12. Measuring Volume
We use graduated cylinders to find the volume of liquids through direct measurment.
Read the measurement based on the bottom of the meniscus or curve. When using a real cylinder, make sure you are eye-level with the level of the water.
What is the volume of water in the cylinder? _____mL
What causes the meniscus?
A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.
Top Image: Bottom Image:

13. Measuring Solid Volume
10 cm
9 cm
8 cm
We measure the volume of regular object with a ruler using the formula length x width x height.
_____ X _____ X _____ = _____
We can measure the volume of irregular object with a graduated cylinder using water displacement.
Amount of H2O with object = ______ About of H2O without object = ______ Difference = Volume = ______
Click here for an online activity about volume. Choose Lessons  Volume & Displacement

14. Density Definition: a measure of how much matter is in a given space
Units: liquids- g/mL solids- g/cm3
Tools: ruler and scale or graduated cylinder and scale
Density = Mass divided by Volume

15. Density Density is a measure of how much matter is in a given space
Tools: graduated cylinder and scale, or a ruler and scale.
Units: liquids g/mL solids is g/cm3
Density = Mass
Volume