Name ____________________________________Date________________Hour___________
Chapter 2: Matter
Section 1- Classifying Matter (Pg. 45)
1. Define matter. _______________________________________________________________________________
2. What is the study of matter and its changes? __________________________
3. Every sample of matter can be classified as a(n)
a. _______________________,
b. _______________________, or
c. _______________________
4. What are elements? __________________________________________________________________________
5. What is the smallest unit of an element? ______________________
6. Every known element is _______________.
7. Diamonds and graphite are both made of ________________atoms.
8. Can elements be broken down into simpler substances? ________
9. Elements are represented by ____________________
10. Describe the letters that make up an elements symbol. ______________________________________________
11. Where can you find a list of ALL the elements? _____________________________________________________
12. What is the most abundant element in the human body? _______________________
13. What other elements make up humans? __________________________________________________________
14. Atoms join together to make _________________________.
15. What is a molecule? ___________________________________________________________________________
16. Each molecule of a COMPOUND contains __________________________________________________________
17. Element that form compounds always combine in ___________________________________________________
18. This means __________________________________________________________________________________
___________________________________________________________________________________________
19. Describe the properties of elements by themselves versus when they combine to form a compound. _________
___________________________________________________________________________________________
___________________________________________________________________________________________
20. Compounds are represented by __________________________.
21. What is a subscript? ___________________________________________________________________________
22. What is a number in front of a chemical formula mean? ______________________________________________
(Your book doesn’t say, but it is called a coefficient.)
23. What is a pure substance? ______________________________________________________________________
24. Is an element a pure substance? _______________ Is a compound a pure substance? ____________________
25. What is a mixture? ____________________________________________________________________________
26. What is the difference between a pure substance and a mixture? ______________________________________
___________________________________________________________________________________________
27. What is the difference between homogeneous and heterogeneous mixtures? ____________________________
___________________________________________________________________________________________
___________________________________________________________________________________________
28. Give two examples of a homogeneous mixture._____________________________________________________
Give two examples of a heterogeneous mixture. ____________________________________________________
Section 2- Properties of Matter (pg. 51)
29. Describe the mixture in carbonated beverages. _____________________________________________________
___________________________________________________________________________________________
30. What are physical properties? __________________________________________________________________
___________________________________________________________________________________________
31. List 3 physical properties. ______________________________________________________________________
32. Why are melting points and boiling points “special” for pure substances? ________________________________
___________________________________________________________________________________________
33. Physical properties are helpful because the can determine the uses of certain substances. Give an example from
the reading. _________________________________________________________________________________
34. What is density? ______________________________________________________________________________
35. What is the formula for density? _________________________________________________________________
36. How is density different from weight? ____________________________________________________________
___________________________________________________________________________________________
37. What are chemical properties? __________________________________________________________________
___________________________________________________________________________________________
38. Name 2 chemical properties AND describe each.
a. ________________- ____________________________________________________________________
b. ________________- ____________________________________________________________________
Section 3- Changes of Matter (pg. 59)
39. How is a physical change different from a chemical change? __________________________________________
___________________________________________________________________________________________
40. Explain WHY dissolving is not a chemical change. ___________________________________________________
___________________________________________________________________________________________
41. Chemical changes form ______________ _________________________.
42. Give 5 ways to detect a chemical change.
a. _______________________________
b. _______________________________
c. _______________________________
d. _______________________________
e. _______________________________
43. Mixtures can be broken down by _______________________ changes. Compounds take a ________________
change to separate them.
44. Classify the following as physical or chemical changes.
a. Painting a wall blue ________________
b. Cooking an egg ____________________
c. Breaking a glow stick ______________________
d. Dissolving sure in water to make kool-aid ________________
e. Bleaching clothes ____________________
f. Burning a log ______________________
g. Chalk reacting with vinegar ___________________