Name: ___________________________
Matter Webquest
Directions: Use the Internet to take you to websites that will help you answer the following questions.
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chngphas.htm
1. How does solid gold and liquid gold compare chemically?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
2. During a phase change, what happens to the temperature?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
Go to the following website and follow the directions:
http://www.miamisci.org/af/sln/phases/index.html
3. What happens to the elements or molecules as the temperature changes?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
4. At what temperature does copper change from a liquid to a gas?
_____ °C
5. At what temperature does nitrogen change from a liquid to a solid? _____ °C
Go to the following website:
http://www.chem4kids.com/files/matter_states.html
6. Looking at the chalkboard-like diagram, what phase of matter comes after gases if you add energy?
_____________________
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemchng.htm
7. What are two examples of metals used in fireworks that undergo a chemical change? ___________________
___________________
8. What are three observable signs to identify a chemical change?
_______________ _______________ _________________
Go to the following website and watch the video:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/change2.htm
9. What happens to the different glasses as they are filled with the liquid?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/variable.htm
10. What are variables?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
11. Generally, how does increasing the concentration affect the rate of a
chemical or physical change? _____________________
12. Why do sugar crystals dissolve faster then sugar cubes?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.
13. Stirring brings substances together so they can ______________________.
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/chemtype.htm
14. All chemical reactions involve a change in _________________ and a
change in ______________.
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/doesit.htm
15. According to this site, a pure substance is defined as matter with a
_______________ ___________________.
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/matter2.htm
16. At the close of 1999, how many more elements have been produced
artificially in a laboratory? ________
17. What elements make up common sugar (sucrose)?
___________________ ___________________ _________________
18. How do the properties of a compound generally compare to the properties
of the elements which make them up?
___________________________________
Go to the following website:
http://www.usoe.k12.ut.us/curr/science/sciber00/8th/matter/sciber/matter.htm
19. The substances in a mixture retain their own _________________.
20. Solutions are a good example of which type of mixture?
Heterogeneous or Homogeneous (Circle one)
21. The substance that does the dissolving is called the ________________.
22. The substance which gets dissolved is called the _________________.
23. What is often called the universal solvent? __________________
24. What is the name for the property of water in which it sticks to other
substances? __________________
Go to the following website:
http://www.miamisci.org/af/sln/phantom/spectroscope.html
25. Why are electron orbits sometimes not circular but irregular in shape?
_____________________________________________________________________________________________
_____________________________________________________________________________________________.