1. Measuring Matter

2. What is matter? Matter is everything around you! 3. All matter has . . . Mass And Volume 4. Examples of Matter Anything that has mass and volume Pencil, book, car, water, air, etc. . . That includes you! 5. What is mass? Mass is the amount of matter in an object. Elephant = a lot of matter = LARGE Mass Paperclip = small amount of matter = SMALL mass 6. How do we measure mass? We measure mass with a triple beam balance Make sure it is balanced before you begin. Move the riders until the the arm is at the zero. Add all the numbers together. Mass is measured in grams (g). 7. What is volume? The amount of space taken up or occupied by an object. 8. How do you find the volume of a rectangular solid object? Volume = length width height V = l w h 2 cm 2 cm 4 cm Example: V = 2 cm 2 cm 4 cm V = 16 cm3 9. How do you find the volume of an irregular-shaped solid object? Water Displacement: Fill a graduated cylinder with a certain amount of water. Drop the object into the graduated cylinder with the water. Measure the change in volume of the water. Measure how far the water rose when the object was placed in the graduated cylinder. 10. How do you find the volume of a liquid? Use a graduated cylinder. Measure from the bottom of the meniscus. Measure in milliliters (mL). 11. How do you find the volume of a gas? A gas will fill the volume of its container, so find the volume of the container and you have the volume of the gas 12. Reminder 1mL=1cm3 Write this on your notes in the margins next to the volume section and put a box around it! 13. Graphing 14. Why do we graph data? To show the relationship between the independent and dependent variable. To compare data. 15. Rules for Graphing: 1. Always use a ruler or computer program 2. Have your graph take up half a page to a full page of paper 3. Title your graph descriptively Title should relate to what is being shown in the graph 16. Rules for Graphing: 4. Label the x (along the bottom) and y axis (along the left side) x-axis should be the independent variable (the variable we change during the experiment, ex: time or distance ) y-axis should be the dependent variable (the variable we observe/measure in the experiment, ex: temperature or mass ) 17. Rules for Graphing: 5. Number the x and y axis with consistent numbers (increasing by 5s or 10s, etc.) Use the majority of each axis for your graph 5. Use different colors/patterns if you are showing multiple trials. 18. How do you know which graph to use? Depends on: The information (variables) you use What you are trying to show 19. Line Graph vs. Bar Graph Line Graph: Used to show changes that occur in related variables Shows trends (changes) over time Bar Graph: Use to compare data (such as measurements, amounts or changes) Can show large changes over time Pie Chart: Circle that shows how parts relate to the whole. Shows proportions 20. Which type of graph would you use for: Plant growth over time Population of a city over 10 years Students preference in food (pizza vs hamburgers vs hot dogs vs chicken nuggets) Number of people in 4 different towns The number of hours spent on Facebook by students each week Line Graph Line or Bar Pie Chart Bar Graph Line Graph