ANSWER KEY
Name: ___________________________________________
Date: _______
Classification of Matter – Study Guide
What’s the Matter?
Use the following word bank to describe the type of matter being explained by the bulleted list
below:
Heterogeneous Mixture
Element
Colloid
Compound
Solution
Suspension

Chemical N is made of one kind of atom. It is found on the Periodic Table. It’s symbol is “Pt”
Element
_______________________________

Chemical X is a mixture of blue solid particles and a clear liquid. After stirring for 5 minutes,
this mixture becomes evenly mixed & no particles are settling. This mixture is blue in color. A
Solution
Tyndall test revealed a negative result. _______________________________

Chemicals R and T have been mixed together through a shaking process. Both of them are
found in the solid state. After combining, you decide to divide the “RT” mixture into 4
different containers in a random fashion. When your task is complete you notice that the
ratio of R:T in each container is NOT the same. There was no use for a filter and you did not
complete a Tyndall test. _______________________________
Heterogeneous Mixture

Chemical M is made up of two different atoms bonded together in a fixed ratio.
Compound
_______________________________

Chemical Z is a mixture of 3 different substances. 2 of these substances are liquid and the
other one is a solid, powder-like material. After mixing these three substances together you
notice that the solid particles fall to the bottom of the container and the other two substances
remain evenly mixed. After filtering, you notice the same solid particles collect in the filter. A
Tyndall test performed on the filtrate has revealed a negative result.
Suspension
_______________________________

Chemical O is a mixture of two substances. One is a red powder and the other is a blue liquid.
After mixing for 5 minutes, you observe a resulting purple liquid. It is evenly mixed and no
particles are settling. A Tyndall test has revealed a positive result.
Colloid
_______________________________
Choose one of the following terms to BEST describe the example given:
Solution, Suspension, Colloid, Heterogeneous Mixture, Element or Compound
Solution
________________________
Air
Element
________________________
Hydrogen
________________________
Smog
Colloid
Heterogeneous Mixture Trail Mix (Peanuts, M&M’s, Chex-Mix)
________________________
________________________
Italian Salad Dressing
Suspension
Solution
________________________
Salt Water
Compound
________________________
Salt (NaCl)
________________________
Iron
Element
Element
________________________
Sulfur
Compound
________________________
Iron Sulfide (FeSO4)
Match the following terms to the appropriate definition:
F
_______
Law of Conservation
of Mass
C
_______
Tyndall Effect
A: A method for separating a mixture into its component parts
B: The substance that is dissolved
C: The scattering of light when particles are present in a mixture
E
_______
Origin
G
_______
Finish Line
A
_______
Chromatography
B
_______
Solute
D
_______
Solvent
D: The substance that does the dissolving
E: The place on Chromatography paper where the ink/dye is placed
F: The mass of all the reactants in a reaction is equal to the mass of all the
products
G: The location where the solvent stops after a given time during paper
Balance the following Chemical Equations:
Chromatography
4 FeS + ____
7 O2
#1 = ____
2 Fe O
→ ____
3
8 CO + ____
17 H2
#2 = ____
→ ____C H
8 H2 O
+ ____
2
8
18
4 SO2
+ ____
Define: PHYSICAL & CHEMICAL Property:
Any characteristic of a material that you can observe without changing the identity of the substance.
Physical Property: _________________________________________________________________________
Any characteristic of a material that you can observe that produces one or more new substances.
Chemical Property: ________________________________________________________________________
List and explain all of the different types of Chemical Reactions that were discussed in class:
Combustion
1) __________________________
= a type of chemical change in which a substance
reacts with OXYGEN to produce energy.
Synthesis
2) __________________________
= a type of chemical change in which two or more
substances combine to form a new substance
Double Replacement
3) __________________________
= a type of chemical change in which the positive ion
from one compound switches places with the
positive ion from another compound to form TWO
new substances
Determine whether the following describes a PHYSICAL or CHEMICAL Property of Wood:
________________
Physical Brown
Chemical Flammable
________________
Physical Solid
________________
Physical
________________
Tough
Physical
________________ Floats in Water
Chemical
________________ Will decay in the presence of fungus
Define: PHYSICAL & CHEMICAL Change:
Any change in which the identity of the substance remains the same
Physical Change: _________________________________________________________________________
A change in which one or more substances becomes a NEW substance
Chemical Change: ________________________________________________________________________
Determine whether the following is a PHYSICAL or CHEMICAL change
Chemical
________________
Alka-Seltzer and Water fizz
Physical
________________
Grinding whole black pepper for dinner
________________
Sharpening a knife to carve a turkey
Physical
Physical
________________
Making Kool-Aide from powder and water
Physical
________________
Melting an ice cube
Chemical
________________
Lightening in the sky during a rainstorm
Chemical
________________
Hearing a “bang” and seeing light from a firework going off in on the 4th of July
Physical
________________
Dissolving sugar in iced tea
Calculate Rf values for each of the components below
Rf RULES:
Finish Line
1
Rf values will White:
never be greater than what number? _______
Dots that are found close to the Finish line will have an Rf
1
ValueGray:
close to what number? __________
Dots that are found close to the Origin line will have an Rf
0
Value close to what number? __________
Striped:
Origin
What is the LABEL for the calculated Rf Values?
There is
no label. (Labels cancel out during the calculations
________________________________________
What is the term of the substance that is used to dissolve
Solvent
inks and dyes during chromatography? _________________
Now use a ruler to measure the Rf Value for the dots above.
White Dot
0.70 cm
=
4.10 cm
0.171
Striped Dot
Gray Dot
1.60 cm
4.10 cm
=
3.30 cm
0.390
4.10 cm
=
0.805
Determine the best Classification for each sample below by using the data given.
Data table:
What’s left
On the
Filter
Observations of
Filtrate
(After filtering)
Was there a
significant
Tyndall Effect?
What is the BEST
Classification for
this sample?
Nothing
Mostly Clear
Liquid
NO
Solution
NO
Solution
White/ Cloudy
Liquid
YES
Colloid
Mostly Clear
Liquid
NO
Suspension
Unknown Mixture
Observation
of Mixture
Before
Filtering
Sample w
Mostly Clear
Liquid
Sample x
Mostly Clear
Liquid with a
strong odor
(Like Nail
polish
remover)
Nothing
Sample y
White/ Cloudy
Liquid
Nothing
Black
Dirty Liquid
Sample z
particles
Mostly Clear
Liquid with a
strong odor (Like
Nail polish
remover)