Unit 3 Common Assessment Study Guide
~Any characteristic or a material that can be observed or measured is a physical property.
~A list of physical properties including physical properties of metal:
-what color a substance is
-mass
-the density of a substance
-malleability
-melting point
-boiling point
states of matter = solid, liquid, gas
-ductility
-freezing point
Ductility – pulled into thin strands
~Examples of physical change:
-evaporation of water from a lake
-water going from a liquid to a gas
-water going from a liquid to a solid
-water going from a solid to a liquid
Malleability – pressed or pounded into thin sheets
Solubility – dissolve in another substance
Luster - Shininess
~A chemical property is any characteristic that gives a substance the ability to undergo a change into a new substance.
~A list of some chemical properties:
-a substance reacts with another substance
~Examples of chemical change:
-food coloring reacting to bleach
-a reaction producing a gas
-combustibility
-rusting of iron
-flammability
-action of yeast in baking of bread
~ELEMENTS = are different kinds of atoms and the simplest form of matter that cannot be broken down into
simpler substances. All elements on the periodic table are pure substances.
~COMPOUNDS = matter made up of two or more elements that have combined forming chemical bonds and
cannot be separated by physical means.
~MIXTURES = a combination of two or more substance that have not combined chemically and can be separated by
physical means.
Use the chart below to answer the question below.
Substance/Type of matter
blood
copper
iron
Physical Property
red
ductile
density 7.87 g/cm³
Chemical Property
reacts with hydrogen peroxide
reacts with acid
ductile
1) After comparing the properties of some common substances you summarized them in the chart above. You then checked your
work in the table you found an error. What error did you make? Ductile is not a chemical property.
2) What determines an objects density? Volume & mass
3) List the steps you take to find the density of a substance. Find mass and volume. Then divide mass by volume.
Density = the amount of mass a material has for a given volume. Density is also, a physical property.
Finding density; density = mass/volume or D=M/V
10 cm
4) Calculate the density of the steel bar if the mass is 500 grams.
5 cm
2 cm
5 cm
(include the unit of measure in your answer) 2 g/cm3
5 CM
~The density of a material stays the same as long as pressure and temperature stay the same.
5) Objects like forks, spoons, and knives made of the same plastic will have common characteristics. If the forks,
spoons, and knives are broken into pieces will the pieces have the same density? Yes
6) Comparing two samples of silver with different masses will their density be the same? Yes
Look at the table
7) Sample B has a mass of 8.04 grams
and a volume of 4mL. According
to the table what is sample B?
Grout
Material
water
milk
baby formula
grout
Density
1.00
1.36
0.92
2.01
Show you work here
8) What tools must you have to find liquid volume? Graduated Cylinder
9) In the diagram below what property of the object is most likely being measured? Write your answer below
LIQUID VOLUME
____________________________________________________________________
10) Use the diagram above to fill-in the blanks below.
Letter A is a SOLID
Letter B is a LIQUID
Letter C is a GAS
11) Where are the following found on the periodic table?
Metals are located to the left of the metalloids
Nonmetals are located to the right of the metalloids
Metalloids touch the bold zig-zag line
12) When a hydrogen molecule and two oxygen molecules are joined together what is produce?
Water or H2O
13) Can you find water on the Periodic Table of Elements? If so, where is it found? If not, why?
No, it is not an element. It is a compound.
Chemical
Description
1
2
3
4
salt
water
limestone
calcium
Chemical
Formula
NaCl
H₂O
CaCO₃
Ca
14) In the table above, which chemical cannot be broken down into other chemicals?
Calcium
15) What can be inferred about elements positioned in group 18 on the periodic table?
They are non-metals and will display all the properties of non-metals.
16) What is the compound formula for Sodium Chloride (table salt)? NaCL
17) Compounds are made up of two or more ______elements_______.
18) According to the Periodic Table of Elements how is hydrogen and silicon classified? Circle your answer below:
metal
metalloid
nonmetal
19) How is silicon classified on the periodic table of elements? Circle your answer below:
metalloid
Mineral
calcite
quartz
graphite
iron
metal
nonmetal
Chemical Composition
CaCO₃
SiO₂
C
Fe
20) The table of above shows two minerals found in Earth’s crust. Name the minerals in the table that are also an
element. Iron & Graphite
21) In the table above list the compounds below: Clacite & Quartz