Active Chem 1.1 - 1.3 Quiz

1. Define matter in a complete sentence.
    
    
    
2. Compare and contrast elements and compounds.
    
    
    
    
    
    
    
3. Name the elements and number of atoms of each element in Potassium bitartrate, KHC₄H₄O₆
    
    
    
4. If copper melts at degrees at 1083 °C, at what temperature does it freeze?
5. What does temperature measure?
    
    
    
    
    
6. Describe how you could make water boil at a lower temperature than 100°C.
    
    
    
    
    
    
    
7. Contrast mixtures and pure substances.
    
    
    
    
    
    
    
    
8. Compare and contrast suspensions and colloids.
    
    
    
    
    
    
    
9. Compare and contrast suspensions and solutions.
    
    
    
    
    
    
    
10. Describe what John Tyndall, the famous Irish physicist, naturalist, and educator discovered in 1869.
     
     
     
11. Describe the shape and volume characteristics for these state of matter.

    Phase	Shape	Volume
    Solid
    Liquid
    Gas

    
    
12. Complete this phase change concept map. Include the (3) phases of matter and the (6) names of the phase change processes.
    
     
13. Complete this phase change diagram. Write in the names of the (3) phases and the (4) phase change processes (the small arrows). The little dots represent atoms or molecules of the substance. There are seven reponses to write !
     
     
     
14. To melt 2 grams of substance X requires 400 Joules (metric energy units). When liquid substance X freezes how much energy is released?
     
15. This diagram shows an experiment with equal amounts of two different substances in identical beakers and hot plates. Both hot plates are turned to the same setting.
     
    • Substance X has a latent heat of fusion of 400 Joules/gram.
    • Substance Y has a latent heat of fusion of 200 Joules/gram.
    1. Which substance will be completely melted first?__________
    2. If substance Y takes 20 minutes to melt, how long will substance X take to melt? ___________