Name:__________________________ Period: 1 2 3 4 5 6 7 Date:____________________ Matter and Density Study Guide Define the following terms: 1. Matter: 2. Mass: 3. Volume: 4. Density: 5. Atom: 6. Molecule: 7. List the 4 states of matter and give two examples of each: A. B. C. D. 8. What 4 elements did the early Greeks believe all substances were made of? 9. Who was the first person to develop a conceptual (in his mind) model of the atom? 10. Why have our ideas about atoms and the way the look changed so much over the years? 11. Using the information we learned about atoms draw what a Neon Atom might look like? (Make sure and figure out the # of protons, neutrons, and electrons before you draw it) 12. What are 3 problems with the current atomic model that we use? Describe in detail below. A. B. C. 13. For each of the phases of matter describe how the molecules behave in that state of matter, how much energy the molecules have, and the relative density of each phase of matter. Phase of Matter Atoms Behavior Amount of Energy Relative Density 14. Draw a picture of what each of the atoms may look like in the 4 phase of matter. You should have 4 pictures below. A. B. C. D. 15. Describe each type of phase change and include a detailed example of that phase change. Phase Change Description of Phase Change Example of Phase Change 16. What is the equation for the volume of an object? 17. What is the equation for the density of an object? 18. Describe how I could take the density of a gas such as carbon dioxide. Please describe the steps in detail below. 19. Describe how I could figure out the density of a rock. Please describe the steps in detail below. 20. What scientific instrument do I use to figure out mass? 21. What scientific instrument(s) do I use to figure out volume? 22. What are the units for the density of a solid? 23. What are the units for the density of a liquid? 24. The following liquids were poured into a graduated cylinder: water (density = 1.0 g/m.), honey (density = 1.8 g/ml), rubbing alcohol (density = .5 g/ml) and vegetable oil (density = .8 g/ml). Record the order that they would stratify in the graduated cylinder from top to bottom: Complete the following problems, make sure to show your work and include proper units. 25. A rock has a mass of 14 g and a volume of 7 ml. What is its density? Will this rock be able to float in water? Why or why not? Explain. 26. A liquid has a density of 1 g/ml. If you have 50 ml of the liquid, what would its mass be? 27. Write the layers of the Earth in order from most dense to least dense (crust, inner core, outer core, mantle, atmosphere, water) 28. A student takes a balloon filled with air that has been in the freezer for 2 hours and places it in a very warm room. What do you think will happen to the balloon? Why will this happen? 29. Does liquid water or frozen water (ice) have a higher density? How do you know which one has a higher density and which one has a lower density? If they are made of the same material why would one have a different density? (Think about what determines density) 30. Most items expand when they are heated and contract when they are cold. Why? Hint-think about how the molecules are behaving. 31. Jerry has a box that is 18 cm long, 12 cm wide and 8 cm tall. He needs to be able to fit 2000 cubic centimeters of books in this box when the moves to his new apartment. Will he be able to use this box, or should he find a new one? (Show your work) 32. Allison is trying to explain to her little brother why a balloon filled with helium floats up into the sky when he lets it go and why a balloon filled with regular air doesn’t float away when he lets it go. Explain what she should say if she wants to be scientifically accurate: 33. What happens to density when the volume of an object goes up or down? What happens to the density when the mass of an object goes up or down? You should have 4 separate answers below.