Download Chemical Building Blocks Unit Review

Name ________________________________
Science Block ___________
Chemical Building Blocks
Unit Review
Studying Suggestions:
• Look over and organize ALL NOTES from the unit – those we did together and those you did on your own
• Look over all labs, activities and worksheets completed during the unit
• Know all the unit vocab – be able to match the word with its definition
• Complete this review sheet – be sure to ask questions when you get stuck, this material will be on the unit test
Review Questions
1. What are the parts of the atom?
2. What are subatomic particles?
3. Where in the atom do we find each of the subatomic particles?
4. What makes one element different from another element?
5. Who is Mendeleev? What did he do? How did he do it?
6. How is the Periodic Table organized?
7. What basic information is found in the periodic table?
8. What are the horizontal rows of a periodic table called? What do all elements in a row have in common?
9. What are the vertical columns of a periodic table called? What do all elements in a column have in common?
10. The atomic number of an element equals the number of _____________________which equal the number of
_______________________.
11. The atomic mass of an element equals the number of ______________________ PLUS the number of
______________________.
12. Fill in the information for the element
Atomic #: _________
35
Br
# of protons: _________
Atomic Mass: _________
# of neutrons: _________
# of electrons: _________
79.904
13. The smallest particle of an element is an ________________________________.
14. Who is Democritus? Why do we learn about him in this unit?
15. What are the main ideas/points of John Dalton’s atomic theory… (you should have 5 or 6 main points)
16. The nucleus of an atom is composed of positively charged ________________________ and neutral particles
called _____________________________.
17. ____________________________________ are atoms of an element with different numbers of neutrons.
18. The outermost electrons are known as _____________________________ electrons. They determine how an
element will react.
19. When an atom loses an electron it becomes a (positive) (negative) ion (circle the correct answer).
20. Atoms are typically __________________________ because they have an equal number of protons and
electrons.
21. Why are the alkali metals known as the most reactive metals?
22. What happens to the reactivity of the metals as you move across the periodic table?
23. Explain why the Noble Gasses are not usually found in compound. (Why do they prefer to hang out by
themselves?)
24. Draw the Bohr’s Model for the following elements:
Silicon
Boron
25. Draw the Lewis Dot Diagram for the following elements:
Silicon
Boron
26. Draw a Lewis Dot diagram to show the ionic bond between sodium and chlorine.
27. What are three general characteristics of a metal? Where on the periodic table are metals found?
28. What are three general characteristics of a nonmetal? Where on the periodic table are nonmetals found?
29. What are three general characteristics of a metalloid? Where on the periodic table are metalloids found?
30. Why are there two rows placed below the periodic table? What do we call these two rows?
31. Argon’s atomic mass is 40 and its atomic number is 18. How many neutrons does Argon have?
32. How many valence electrons does calcium have?
33. Based on lithium’s location in the periodic table, how many energy levels does a lithium atom have?
34. If atoms of a halogen nonmetal gain one electron, how many valence electrons will it have?
Identifying Unknown Elements
Use a periodic table to identify the element described in each statement below. Then, for each element determine what
family it is in and list one characteristic of that family.
35. This element is in the same family as lead and it has fewer protons than sodium.
Element:
Family:
Family Characteristic:
36. This element has an atomic number that is one greater than platinum.
Element:
Family:
Family Characteristic:
37. This element has the most protons of any element in group 15.
Element:
Family:
Family Characteristic:
38. This element has more than 50 protons, but less than 75 and is in group 17.
Element:
Family:
Family Characteristic:
39. This element has an atomic number lower than that of aluminum and has one less valence electron than those
in group 16.
Element:
Family:
Family Characteristic:
40. This group 2 element has fewer protons than bromine, but more protons than sulfur.
Element:
Family:
Family Characteristic:
41. This element is in group 1 and has a higher atomic number than chlorine, but a lower atomic number than
bromine.
Element:
Family:
Family Characteristic: