CHEMISTRY
(H) Biology 2015-16
Name: _________________________________________ Period: _____ Date: ________________
What is the CHEMICAL NAME for the following elements?
1.
2.
3.
4.
C
H
N
Cl
1.________________________
2. _______________________
3. _______________________
4. _______________________
What is the CHEMICAL SYMBOL for the following elements?
5.
6.
7.
8.
OXYGEN
PHOSPHORUS
POTASSIUM
CALCIUM
5. _______________________
6. _______________________
7. _______________________
8. _______________________
WHICH ELEMENTS make up the following compounds ? IDENTIFY EACH ELEMENT in the compound by its
CHEMICAL SYMBOL.
(SEE EXAMPLE)
Ex: FeO
is made of: Fe , O
9.
10.
11.
C6H12O6
MgSO4
NiBr2
9. ________________________
10. ________________________
11. ________________________
What is the TOTAL NUMBER OF ATOMS in each of the following compounds?
12.
13.
14.
C6H12O6
Mn3O4
AgNO3
Extra Credit How many atoms make up the molecule “acetylsalicylic acid”,
which is found in aspirin? The chemical formula for this molecule is
C6H4(COOH)OCOCH3
24.
The number of protons in an atom is called the …
25-26. The region around the nucleus is occupied by _(25) _ and these
subatomic particles can be found orbiting the nucleus in areas
referred to as __(26)__.
12. ________________________
13. ________________________
14. ________________________
XC. _______________________
24. _______________________
25. _______________________
26. _______________________
27.
All the mass of an atom is found in the …
27. _______________________
28.
The subatomic particles responsible for all the mass of an atom
are the ____________ and ___________.
28. _______________________
_______________________
29.
The subatomic particle responsible for identifying the type of atom
(like our fingerprints) is the …
29. _______________________
The subatomic particle responsible for the chemical behavior (bonding
ability) of the atom is the …
30. _______________________
30.
34.
Which pair of subatomic particles have equal but opposite charges?
35-36. All chemical formulas are made of two parts: letters that identify the
kinds of elements and numbers that represent how much of each kind
of element. What is the vocabulary term for each part of a chemical formula?
34. _______________________
_______________________
35. letters:__________________
36. numbers:________________
Observe the following model and answer the questions below relating to this atom.
37. _______ What is its symbol?
38. _______ What is its atomic number?
2
15 p+
16 n
39. _______ What is its atomic mass?
8
5e-
40. _______ How many valence electrons does it have?
41. _______ How many energy levels are needed to accommodate all its electrons?
42-44. Using the models below draw the three ISOTOPES of CARBON. (Carbon: Atomic # is 6 , Isotopes are 12C, 13C, 14C)
12
46.
C
13
C
14
C
An atom will gain, lose, or share electrons to become more chemically
stable (). This is called _?___.
46._______________________
47-48. When an atom LOSES its electrons it becomes a _(47)___ ion (charged atom)
called a _(48)__.
47. ______________________
48. ______________________
49-50. When an atom GAINS electrons it becomes a __(49)___ ion and
is referred to as an __(50)_____.
49. ______________________
50. _______________________
51.
51.______________________
When atoms share electrons unequally then the bonds formed are
referred to as ______________ covalent bonds.
55. Diagram the IONIC BONDING between CALCIUM and CHLORINE. (Label all parts!!!!)
20
Ca
(Calcium)
40.08
17
Cl
(Chlorine)
35.453
56. Diagram the COVALENT BONDING of HYDROGEN and OXYGEN. (Use the Lewis dot diagram model)
(Label !!!!!)
1
H
(Hydrogen)
1.0079
8
O
(Oxygen)
15.999