Exam 1 review

1. Let’s Get Started
• Get in equal groups (let’s shoot for 5-6 people
each)
• Pull out a paper and write down the names of
the people in your group.
• Turn on gaming buzzer by holding the on/off
button for 5 seconds

2. Water boils at 100 degrees C
Is this a physical or chemical
property?

3. Answer:
Physical

4. What is an anion?

5. Answer
Negatively charged ion.

6. Which state of matter retains its
volume but adapts its shape to
the container?

7. Answer
Liquid

8. The fertilizer ammonium phosphate
has nitrogen, hydrogen,
phosphorous, and oxygen in a
3:12:1:4 ratio. What is chemical
formula for ammonium phosphate?

9. Answer
N3H12PO4

10. Which subatomic particle(s)
is(are) found in the nucleus?

11. Answer
Neutrons and protons

12. What is the shape of C2H4?

13. Answer
Trigonal planar

14. How many neutrons in Cobalt-
60?

15. Answer
Mass number 60 minus atomic
number 27 = 33

16. What is an isotope of an
element?

17. Answer
Has the same number of protons,
different number of neutrons.

18. What is the name of this N2O5?

19. Answer
Dinitrogen pentoxide

20. How many mg in a kg?

21. Answer
1 kg x 1000 g x 1000 mg = 1 x 106
1 kg 1 g

22. What is the difference between
an ionic and a covalent
compound?
(I’m not looking for the electronegativity
difference- I want to know in terms of the
electrons)

23. Answer
Ionic is the transfer of electrons
Covalent is the sharing of electrons

24. What is the charge and mass in amu
of each of the following:
neutron
proton
electron

25. Answer
Neutron = 0 charge, 1 amu
Proton = +1 charge, 1 amu
Electron = -1 charge, 0.0005 amu

26. Name an isotope of?
14C
6

27. Answer
12C
Carbon-12
6

28. How many electrons in Ca2+?

29. Answer
18
Atomic number of calcium is 20.
Neutral atom would have 20 electrons.
Positive 2 charge indicates that it has
lost 2 electrons.

30. How many electrons can be
accommodated in 3d subshell?

31. Answer
10

32. What ion is sulfur most likely to
form?

33. Answer
S2-

34. What is the electron
configuration of sulfur?

35. Answer
1s22s22p63s23p4

36. Periodic Table:
What is Iron classified as?

37. Answer
Transition metal

38. How many valence electrons
does phosphorous have?

39. Answer
5
P is in group 5.

40. How many double bonds AND
unpaired electrons in the lewis
structure of CH3OH

41. Answer
0 double bonds and 4 unpaired
electrons on the carbon.

42. Which element has a higher
ionization energy, P or Cl?

43. Answer
Cl
Ionization energy is the energy
required to remove the most loosely
held electron from an atom in the
gaseous state

44. How many significant figures are
in 0.0402?

45. Answer
3
-Zeros at the beginning of a number
are never significant
-Zeros between numbers are
significant

46. What is the electronegativity
different for an ionic bond?

47. Answer
Greater than 1.9

48. What type of bond is formed
from the unequal sharing of
electrons?

49. Answer
Polar

50. What is the formula of a
compound formed between
aluminum and chlorine?

51. Answer
AlCl3

52. What is the name of FeO?

53. Answer
Iron (II) oxide
Or
Ferrous oxide

54. Classification of matter
What would the alloy, bronze, be
classified as?

55. Answer
Homogenous mixture