honors BIOLOGY
name:
block:
Chemistry Review
score:
Chemistry
/48
1.
An atom is composed of two basic parts. These are the center, or the __________, and the outer, or _____________.
2.
Where are the protons and neutrons located in all atoms?
3 pts
3.
What are the symbols for each of the subatomic particles?
2 pts
4.
Which particles determine the atomic mass of an atom?
5.
What are the units used for the mass of these particles?
6.
Why is the combined mass of the electrons in an atom considered to be negligible?
7.
If an atom has six protons, how many electrons does it have?
8.
The atomic number is equal to what?
9.
For the following family names (columns), write below them the correct charge formed when these elements ionize.
2 pts
I
H
II
Be
III
Al
IV
C
V
N
VI
O
VII
Cl
For questions 10 - 14, you will need to use a periodic table.
Name an element that…
10. …is stable as an atom.
11. …forms a -3 ion.
12. …has its outermost electrons in the second energy level.
13. …has the most number of energy levels and the fewest number of protons in its row.
14. …has the fewest number of energy levels and the most number of protons in its row and will ionize to become stable.
15. What is the driving force behind atoms gaining a charge to become an ion?
16. How many atoms are in a carbon dioxide molecule? (CO2)
Use the following equation to answer the questions 17 - 24.
C5H12 + 8 O2  5 CO2 + 6 H2O
17. How many total molecules are included in the equation?
18. How many different kinds of molecules are included in the equation?
19. How many different kinds of elements?
20. How many atoms of oxygen are in the amount of carbon dioxide shown to the right of the arrow?
21. Are there an equal number of hydrogen atoms on the left as on the right?
22. What is the ratio of pentane (C5H12) to oxygen (O2) on the left?
23. How many atoms are in the pentane?
24. How many molecules are shown on the left?
25. Is this equation balanced? Yes or No
Mrs. Loyd 
cschmittloyd@waukeeschools.org
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7/12/16
http://loydbiology.weebly.com
VIII
He
26. All of the elements in the same family (column) have the same number of _________________.
27. All of the elements in the same row have the same number of ___________________.
3 pts
28. Carbon-12 and Carbon-14 are isotopes of carbon. What does this mean?
They have the same _________________________, but different ________________________ therefore different
_________________.
2 pts 29. What is the difference between an atom of sodium and an ion of sodium?
30. How many electrons will one carbon atom share?
31. How many bonds can one hydrogen atom form?
32. How many bonds can one oxygen atom form?
33. How many times more protons does Fluorine have compared to Lithium?
34. Explain why electrons stay around any given nucleus?
35. Which element, F or Li, has a stronger pull of electrons?
36. Define: ionic bond:
37. Define: covalent bond:
38. What is the type of energy stored in chemical bonds? Kinetic or Potential
39. Draw an example of a structural formula?
40. What does the double line between two atoms mean, such as H-C=C-H?
41. Which element is found in all organic compounds?
Mrs. Loyd 
cschmittloyd@waukeeschools.org
Page 2 of 2
7/12/16
http://loydbiology.weebly.com