Name _______________________________
Up to 5 points extra credit on test, due W 9/17 at the beginning of class
Chemistry Section I/II Review
1) Know the definitions of the following terms.
a.
b.
c.
d.
e.
f.
g.
h.
i.
j.
k.
l.
m.
n.
o.
p.
q.
r.
Law of conservation of mass – states that matter can’t be created or destroyed
Hypothesis – a possible explanation for an observation
Element – contains only one type of atom and can’t be broken down by ordinary means
Amu – the unit most commonly used for atomic mass
Compound – composed of two or more elements chemically combined in a specific ratio
Mixture – composed of two or more substances physically combined without a specific ratio
Dmitri Mendeleyev – first organized the periodic table
Chemical change (including examples/evidence) – a change that results in the production
of a new substance; indicators include: bubbles, color change, production of light and heat
Metal – found on the left side of the periodic table staircase (most elements are metals)
Nonmetal – found on the right side of the periodic table staircase
Halogen – group VII A (7A or 17) on the periodic table; second to last column
Noble gas - group VIII A (8A or 18) on the periodic table; the last column
Alkali metal - group I A (1A or 1) on the periodic table; the first column
Alkali earth metal - group II A (2A or 2) on the periodic table; second column from left
Transition metal – the center section of the periodic table ranging from group 3-12
Inner transition metal – the 2 rows of elements at the bottom of the periodic table
Metalloid – found on the periodic table staircase
Main group/representative elements – the first 2 columns and the last 6 columns on the
periodic table
2) Circle the intensive properties in the following list: mass, density, volume, color, boiling point
Intensive properties are independent of the amount ex) density, color & boiling point
Extensive properties depend on the amount ex) mass & volume
3) You have two blocks of iron. One has a mass of 7.8 g, the other has a mass of 150.0 g.
a. Do they have the same volume? Explain. No, they do not have the same volume. They
are both made of iron, so they both have the same density. In order to have the same
volume, they would have to be the same mass.
b. Do they have the same density? Explain. Yes, they are both made of iron.
4) You have two blocks of different metals. One is a 150.0 g block of aluminum with a density of 2.7
g/cm3; the other is a 150.0 g block of gold with a density of 19.3 g/cm3. If you submerge each in
water, which block will displace a larger volume of water? Explain why.
Aluminum is much less dense than gold, therefore 150.0 g of Aluminum would take up much more
space than 150.0 g of gold. Because the Aluminum is bigger, it would displace more water.
5) Calculate the volume of the gold block from question 4).
V=m
D
V = 150.0 g
19.3 g/cm3
V = 7.77 cm3
6) Consider two objects that each weigh 20.0 g. One is made of lead and has a density of 11.4 g/mL.
The second object is made of aluminum and has a density of 2.7 g/mL. Which object takes up
more space? What volume does each occupy?
The aluminum would take up more space because it is less dense.
Lead: V = m
V = 20.0 g
11.4 g/cm3
D
Aluminum:
V = 1.75 cm3
V=m
D
V = 20.0 g
V = 7.41cm3
2.7 g/cm3
7) Identify the piece of equipment that would be the most appropriate for measuring the volume of
each of the following. Also circle “displacement” if the water displacement method would be used.
a. Gatorade
graduated cylinder
ruler
displacement
b. Key
graduated cylinder
ruler
displacement
c. Sand
graduated cylinder
ruler
displacement
d. Tissue box
graduated cylinder
ruler
displacement
8) Know the different parts of the periodic table, and be ready to label or identify these parts. Feel
free to practice by coloring in and labeling the periodic table below.
9) Give each of the following pieces of information for aluminum.
a. Atomic symbol Al
b. Atomic number 13
c. (Average) atomic mass 26.982 amu
10) 3.4 mL of water are added to a graduated cylinder. Then, a small marble is added
to the water, raising the volume to 5.6 mL.
a. Draw the original and final meniscus on the graduated cylinder on the
right.
b. Calculate the volume of the marble. V = 5.6 – 3.4
V = 2.2 cm3