8 chapter7section2part1
- 1. SPI 0807.9.8 Interpret the results of an investigation to determine whether a physical or chemical change has occurred. Chapter 7 Section 2 Part 1
- 2. What You Will Learn • I can identify six examples of physical properties of matter. • List six examples of physical changes.
- 3. What Mastery Looks Like
- 4. Why do you need to be able to identify 6 physical properties of matter? • Tell your face partner. • Partner A should start.
- 5. Physical Properties • A physical property of matter can be OBSERVED or MEASURED without changing the matter’s identity. – For example, you don’t have to change an apple’s identity to see its color or measure it’s volume. – You use physical properties every day. For example, physical properties help you determine if your socks are clean (odor), if your books will fit into your backpack (volume), or if your shirt matches your pants (color).
- 6. Physical Properties of Matter State of Matter Malleability Conductivity Density Solubility Ductility odor color volume taste size shape temperature
- 7. Density • Density is a physical property that describes the relationship between mass and volume. • Density is the amount of matter in a given space. – A golf ball and table- tennis ball have similar volumes, but a golf ball has more mass than a table-tennis ball does. – So the GOLF ball has greater density. To find an object's density (D), first measure its mass (m) and volume (V). Then, use the equation below. Units for density consist of a mass unit divided by a volume unit. Some units for density are g/cm3, g/mL, kg/m3, and kg/L. Remember that the volume of a solid is often given in cubic centimeters or cubic meters. So, the density of a solid should be given in units of g/cm3 or kg/m3.
- 8. Physical Changes • A change that affects one or more physical properties of a substance • Physical changes do not change the identity of the matter involved. – Freezing water to make ice cubes and sanding a piece of wood are examples of physical changes. These changes do not change the identities of the substances. Ice is still water. And sawdust is still wood. – Another interesting physical change takes place when certain substances dissolve in other substances. For example, when you dissolve sugar in water, the sugar seems to disappear. But if you heat the mixture, the water evaporates. Then, you will see that the sugar is still there. The sugar went through a physical change when it dissolved. What are some other examples of physical changes?
- 9. 6 Physical Properties Assignment • Pick 6 of physical properties of matter. • You pick the 6 that you want to profile. • Create a Power Point that displays the 6 physical properties.
- 10. Density Activity - Friday • tall, narrow, clear container • lamp oil • rubbing alcohol • vegetable oil • tap water • dish soap • milk • maple syrup • corn syrup • honey • Ping pong ball • Soda bottle cap • Plastic bead • Grape tomato • Board game die • Popcorn kernel • metal nut or bolt
Editor's Notes
- #11: http://www.stevespanglerscience.com/lab/experiments/density-tower-magic-with-science