WorksheetsClassification of Matter, Mixtures, and Separation
Total questions: 113
Worksheet time: 57mins
Name
Class
Date
1.
Matter is most generally either
a)
elements or compounds
b)
substances or mixtures
c)
homo- or heterogeneous
d)
compounds or mixtures
2.
Substances are either:
a)
elements or compounds
b)
homo- or heterogeneous
c)
substances or mixtures
d)
uniform or laytered
3.
Mixtures can be either:
a)
homo- or heterogeneous
b)
elements or compounds
c)
blends or combinations
d)
solutions or homogeneous
4.
Lemonade is what type of matter?
a)
element
b)
compound
c)
uniform mixture
d)
heterogeneous mixture
5.
Homogeneous mixtures are
a)
layered
b)
not uniform
c)
separated by density
d)
solutions
6.
Which mixture type is usually hardest to separate?
a)
solution
b)
heterogeneous mixture
c)
layered mixture
d)
non-uniform mixture
7.
Separation of compounds is by:
a)
chemical means
b)
physical means
c)
method which does not make a new substance
d)
method which physically separates a blend
8.
changing of a substance into a new substance:
a)
involves breaking bonds
b)
involves making new bonds
c)
involves recombining the elements
d)
all of the above are correct
9.
We can tell that a substance is a compound when:
a)
the matter formula has one upper case element symbol
b)
the matter has many formulas separated by a plus sign suggesting physical blending
c)
the matter formula has 2 or more upper case symbols
d)
when you heat it, it does not ever change
10.
Where generally on the Periodic Table do most elements form a positive charge?
a)
left side
b)
right side
c)
middle
d)
none of the elements form positive ions
11.
Where generally on the Periodic Table are elements which form negative ions?
a)
left side
b)
all of right side
c)
all of right side except the last vertical column, which are stable noble gaes
d)
none of the elements tend to form negative ions
12.
Which of the following are not good indicators or hints of a chemical change?
a)
color change
b)
heat given off
c)
light given off
d)
new smell
13.
What is the form of our chemical hypothesis for our observed changes:
a)
If...then... when...
b)
If...when...
c)
Just a prediction
d)
Educated guess
14.
If steel wool oxidizing during "burning" is making more bonds than breaking, then we say it should be overall:
a)
taking in more energy than giving off
b)
endothermic
c)
colder when it is undergoing a chemical change
d)
exothermic: giving off more energy than taking in during the change
15.
Solutions which have more solute than can dissolve and blend evenly are called:
a)
saturated
b)
dilute
c)
supersaturated
d)
stable
16.
Solubility is the ability to:
a)
undergo a chemical change
b)
separate out into a heterogeneous mix
c)
dissolve a certain amount of solute
d)
ability to solve a chemistry problem
17.
Dilute solutions are:
a)
overdosed with solute
b)
water solutions with just the maximum amount of dissolved solute
c)
a solution which can dissolve more solute
d)
solutions which produce physical precipitates at the bottom of the container
18.
You can change a supersaturated solution into a more saturated one by:
a)
adding more water
b)
boiling off the excess water
c)
cooling down the solution
d)
freezing the solvent
19.
What separation method uses size of particles as an identifying property of matter:
a)
boiling
b)
distillation
c)
magnetism
d)
filtration
20.
Which mixture separation method uses temperature as the main identifying property of matter:
a)
decantation
b)
filtration
c)
boiling
d)
magnetism
21.
What identifying property of matter helps separate a heterogeneous mixture in a centrifuge?
a)
boiling point
b)
melting point
c)
density
d)
color
22.
What goes through a filter paper in aqueous filtration?
a)
only solutes that fit
b)
only water solvent
c)
water solvent and small enough particles
d)
large particles
23.
What method of mixture separation allowed us to separate the ink dot?
a)
filtration
b)
distillation
c)
centrifuation
d)
chromatography
24.
Blood is actually a mixture which is:
a)
homogeneous
b)
heterogeneous
c)
a solution
d)
impossible to separate physically
25.
What bodily fluid should always be a very dilute mixture solution?
a)
blood
b)
urine
c)
sweat
d)
tears
26.
What goes through a filter paper?
a)
sand
b)
sugar
c)
styrofoam
d)
salt
27.
What should be magnetic?
a)
sand
b)
iron
c)
salt
d)
styrofoam
28.
Insoluble means:
a)
unable to chemically change
b)
unable to dissolve
c)
unable to separate
d)
unable to be seen
29.
Proper filtration of aqueous solutions through filter paper needs:
a)
water added to mixture you are separating
b)
heat added
c)
the person to hold the filter paper in their bare hand during filtration
d)
boiling to occur
30.
How do you speed up filtration of a mixture through a filter paper?
a)
poke a hole in the paper
b)
wafting
c)
cooling down the mixture
d)
stirring
31.
How do we prepare filter paper?
a)
stuff it into the funnel before pouring
b)
fold it once and stuff into the funnel before pouring
c)
fold it once and poke a hole, because it has no holes in it, before pouring
d)
fold it twice, layer it 3:1, and place in funnel
32.
Pizza is what type of matter?
a)
element
b)
compound
c)
layered mixture
d)
solution
33.
Where are salt solute particles when dissolved in water?
a)
floating in water
b)
unevenly mixed if saturated
c)
sunk below water as a physical precipitate if saturated
d)
evenly blended between water molecules if saturated
34.
Trail mix is a
a)
heterogeneous mixture
b)
homogeneous mixtures
c)
solution
d)
substance
35.
Which is not a main way to change the behavior and motion of chemical particles?
a)
changing concentration or amount of chemical
b)
change temperature
c)
change pressure
d)
keep constant its state of matter and temperature
36.
Matter is stuff that:
a)
takes up space
b)
has no volume
c)
has no mass
d)
never is hard to see
37.
By what property does filtration work?
a)
color
b)
solubility
c)
magnetism
d)
particle size
38.
Which of the following methods is used to get sand separate from sugar?
a)
multiple filtration, followed by boiling
b)
multiple magnetism
c)
multiple decanting and rinsing,
followed by boiling
followed by boiling
d)
boiling of water
39.
Other than temperature, type of particle, amount of particle, and pressure on the chemical system, what other factor can explain why blue dye from dark glitter is more soluble in acetone than water?
a)
state
b)
color
c)
shape
d)
magnetism
40.
Which is the strongest imf (intermolecular force of attraction):
a)
attraction of air to water
b)
attraction of water to acetone
c)
attraction of Na (+1) and Cl (-1) to water
d)
attraction of yellow dye solute to acetone
41.
Intermolecular forces ("imf's"):
a)
hold atoms together within one molecule
b)
holds molecules together; it is between separate molecules
c)
can be overcome when cooling a solution
d)
are what hold the hydrogens to the oxygen within a water molecule
42.
Subscripts count:
a)
atoms of a specific type that are bonded within one molecule
b)
molecules
c)
atoms, and their numbers are listed in front of a formula
d)
can differ for a different sample of the same substance
43.
How many hydrogen atoms are in a molecule of water?
a)
1
b)
2
c)
3
d)
4
44.
How many oxygens are within each water molecule?
a)
1
b)
2
c)
3
d)
4
45.
What is the formula for 5 molecules or water?
a)
H20
b)
H205
c)
5H20
d)
H50
46.
If a mixture looks the same throughout, it is likely to be:
a)
homogeneous
b)
heterogeneous
c)
not a solution
d)
a substance
47.
At the start of the lab, all substances of the mixture you were given for the separation lab, except for the water you should have added later, were of what state of matter?
a)
solid
b)
liquid
c)
gas
d)
aqueous
48.
What substances of the following are not soluble in water?
a)
salt
b)
sugar
c)
sand
d)
acetone
49.
Where on the Periodic Table are good conductors of heat and charge?
a)
on the right, where the non-metals are
b)
generally on the left of the table, where mainly metals are
c)
generally at the top of the table
d)
generally at the bottom of the table
50.
In chemical formulas, what number is implied and not usually written?
a)
any subscript
b)
the number 1
c)
the coefficient on the left of the formula
d)
the number 10
51.
Which white substance is very soluble in water and passes through the filter paper?
a)
sugar
b)
salt
c)
baking soda
d)
lighter colored sand crystals
52.
What is the shape of salt crystals?
a)
rectangular prisms of all sorts
b)
no particular shape
c)
orthorhombic
d)
cubic
53.
What is the trick for separating sand from a mixture?
a)
passing a magnet closely over it
b)
decanting, filtering, boiling
c)
decanting and maybe filtering
d)
boiling
54.
How do we usually order the following methods so we get good separation of mixture ingredients:
a. boiling
b. filtering
c. dissolving
d. decanting
a. boiling
b. filtering
c. dissolving
d. decanting
a)
in this order: c, d, b, a
b)
in this order: a, b, c, d
c)
in this order: d, c, b, a
d)
it does not matter
55.
How high should you pour your mixture up the filter paper when filtering?
a)
all the way up the funnel
b)
it does not matter
c)
1/2 way up
56.
Mixtures are:
a)
substances
b)
blends
c)
combinations
d)
always layered
57.
If 6-10 grams of salt is added to a solution of blue dye dissolved in acetone and yellow dye dissolved in distilled water, what will happen to the mixture's appearance?
a)
The mixture stays uniform, the same throughout.
b)
The mixture layers into yellow and blue.
c)
The mixture will layer into red, white, and blue.
d)
The mixture starts to boil.
58.
If a sample of molecules shows all particles being the same type, we call that sample what?
a)
substance
b)
mixture
c)
element
d)
solution
59.
If a sample of particles is a blend of different types of particles, we call that sample what?
a)
substance
b)
mixture
c)
element
d)
solution
60.
If there is a precipitate showing up at the bottom of a container which holds a solution, we classify that solution as:
a)
saturated
b)
dilute
c)
supersaturated
d)
electrolytic
61.
How can we usually make a supersaturated solution less saturated?
a)
boil the water solvent off
b)
add water solvent
c)
add more solute
d)
cool the mixture
62.
Which substance filters through the filter paper into the receiving container as a filtrate?
a)
table sugar
b)
sand
c)
sulfur
d)
table salt
63.
Which of the following is not in danger of burning and turning color as you heat a mixture to boil off water from our mixture?
a)
table sugar
b)
sulfur
c)
table salt
d)
iron
64.
Which is not true about distilled water?
a)
it is pure water
b)
it is a mixture
c)
it has a boiling point of 100 degrees Celsius at standard pressure
d)
it has no dissolved ions in it
65.
A bug can climb a wall typically due to:
a)
chemical bonds within the molecules
b)
density
c)
temperature
d)
imf's . (intermolecular forces of attraction)
66.
Atoms that have charges due to the gain or loss of electrons from a neutral atom are called:
a)
substances
b)
mixtures
c)
elements
d)
ions
67.
Making and separation mixtures is:
a)
made by physical means
b)
made by chemical means
c)
made by chemical change
d)
a change that is not reversible
68.
Which of the following on the Periodic Table are not a diatomic molecules?
a)
hydrogen, nitrogen
b)
oxygen, fluorine
c)
carbon, sulfur
d)
chlrorine, bromine, iodine
69.
Diatomic molecules have:
a)
two charge areas
b)
two atoms of the same type bonded in one molecule
c)
are all gases at standard temperature
d)
metals in their formulas
70.
Subscripts count:
a)
atoms of a specific type within a substance formula
b)
ingredients in a mixture
c)
molecules within a chemical sample
d)
areas of charge within a molecule
71.
For small molecules, which of the following intermolecular forces of attraction ("imf") are the strongest?
a)
ion-dipole
b)
dipole-dipole
c)
hydrogen bonding
d)
London dispersion forces
72.
Intermolecular forces ("imf's"):
a)
are between molecules
b)
usually can be broken when sufficient heat is added
c)
can vary in their strength of attraction
d)
all of the above
73.
Where are the metals mainly on the Periodic Table?
a)
on the left of the metalloid line, including hydrogen
b)
on the right of the metalloid line
c)
on the top of the Periodic Table
d)
on the left of the metalloid line, not including hydrogen
74.
Elements can be ________________________ to form compounds.
a)
chemically blended
b)
chemically combined
c)
physically blended
d)
physically combined
75.
Burning or combustion of a hydrocarbon fuel in oxygen in an open system usually makes:
a)
carbon dioxide
b)
water
c)
heat that is given off
d)
all of the above
76.
Which piece of equipment is most accurate for measureing volume of a liquid:
a)
beaker
b)
flask
c)
pipette
d)
graduated cylinder
77.
What occurs to water or acetone when it boils out of a open system?
a)
the particles collide
b)
the particles spread
c)
the particles occupy more space
d)
all of the above are true
78.
Simplify the following formulas that are blended in a mixture:
Na + Na + Mg + CO2 + CO2 + Na
Na + Na + Mg + CO2 + CO2 + Na
a)
Na2 + Mg + CO2
b)
Na3 + Mg + CO2
c)
Na + Mg + 2CO2
d)
3Na + Mg + 2CO2
79.
Simplify the following mixture formulas:
Mg + Mg + NaCl . + NaCl + H2O + H2O + NaCl
Mg + Mg + NaCl . + NaCl + H2O + H2O + NaCl
a)
3 NaCl + 2H2O + 2 Mg
b)
3 NaCl + 2H2O + 2 Mg
c)
NaCl + Mg + H2O
d)
Mg2 + Na3Cl3 + H4O2
80.
Which is true?
a)
Solids are made of particles tightly packed, orderly, and vibrating.
b)
Liquids are made of particles that are typically more spread out than solids and mainly sliding.
c)
Gases are made of particles that are spread out, with the highest kinetic energy, and compressible.
d)
All of the above are true.
81.
Which type of solutes usually increase their solubility when heated?
a)
compounds containing non-metals in their formulas
b)
compounds containing metals in their formulas
c)
compounds containing oxygen
d)
compounds containing sulfur
82.
Iron (Fe) can be separated from a mixture of many ingredients:
a)
by filtration
b)
by decanting
c)
by running a magnet through it
d)
by boiling
83.
What is the type of intermolecular force ("imf") between dissolved water and acetone and also between water molecules which involves N, O, or F on one molecule and hydrogen of the nearby molecule?
a)
ion-dipole
b)
dipole-dipole
c)
Hydrogen bonding
d)
London dispersion forces
84.
Physical changes are different from chemical changes in that physical changes:
a)
produce a new substance
b)
are always hard to reverse
c)
change the properties of the mixture's ingredients
d)
are usually reversible and do not change the properties of ingredients within a mixture
85.
Salt water and sugar water are:
a)
substances
b)
homogeneous mixtures
c)
heterogeneous mixtures
d)
layered mixtures
86.
Hydrogen is:
a)
a metal
b)
a non-metal
c)
a metalloid
d)
a solid at room temperature
87.
What cannot be chemically broken down further by chemical means?
a)
compound
b)
element
c)
water
d)
table sugar
88.
If a sample of particles are of the same type but have different atoms chemically combined within each particle, then we are talking of:
a)
a mixture of elements
b)
a mixture of elements and compounds
c)
a mixture of compounds
d)
compound substance
89.
Forming solutions by dissolving solutes into solvents:
a)
follows "like dissolves like" substances when mixing
b)
produces a layered solution
c)
is a chemical change
d)
cannot be reversed by heating
90.
Table sugar will:
a)
melt upon cooling
b)
not boil upon heating, because it will burn instead
c)
not dissolve in water
d)
go through filter paper during filtration
91.
Which has a lower boiling point than water due to weaker imf's?
a)
sand
b)
salt
c)
acetone
d)
table sugar
92.
Temperature is:
a)
a major factor in changing chemical behavior
b)
is an absolute measurement of chemical molecular speed.
c)
inversely proportional to pressure
d)
average potential energy
93.
What is the method of separation of water from salt?
a)
decantation
b)
filtration
c)
boiling
d)
chromatography
94.
Rust or iron (II) oxide:
a)
can form from wet iron
b)
can form from physically blending iron and oxygen
c)
is magnetic
d)
is a mixture
95.
Aqueous (aq):
a)
means "in water solution"
b)
do not experience any imf's
c)
means "in a heterogeneous mixture"
d)
looks uniform
96.
O degrees Celsius is:
a)
the freezing point of water
b)
the boiling point of water
c)
the melting point of ice
d)
2 of the other choices are correct
97.
dipole describes molecules which are:
a)
all polar
b)
all non-polar
c)
without areas of partial charge
d)
able to dissolve in fat
98.
If you are asked to classify a clear liquid:
a)
it must be pure water
b)
it might have dissolved solute, so heating the liquid to a boil will help
c)
it could have only one dissolved solute in it
d)
it must be non-polar
99.
Intermolecular forces result in adhesion or cohesion of ingredient molecules when:
a)
at high temperatures
b)
at low temperatures
c)
at low pressures
d)
none of the above
100.
Water is polar, and so is:
a)
salt
b)
sand
c)
fat
d)
sulfur
101.
Salted popcorn is a:
a)
heterogeneous mixture
b)
homogeneous mixture
c)
element substance
d)
compound substance
102.
What part of a solution has the most % mass composition?
a)
solid solute
b)
solvent
c)
gas solute
d)
liquid solute
103.
Concentration relates the amount of solute to:
a)
volume of solute
b)
volume of solvent or solution
c)
mass of solvent
d)
density of solvent
104.
Funnels help set up:
a)
decanting
b)
filtering
c)
boiling
d)
freezing
105.
Mass cannot be created nor destroyed, but only moved around and sometimes bonded chemically describes what law?
a)
E=mc2
b)
Conservation of Mass
c)
definite proportions
d)
Boyle's Law
106.
A chemical changing color suggests a:
a)
physical change
b)
chemical change
c)
nuclear change
d)
someone contaminated your sample
107.
Which is most orderly?
a)
solid
b)
liquid
c)
gas
d)
aqueous soltuion
108.
Which is S?
a)
oxygen
b)
hydrogen
c)
chlorine
d)
sulfur
109.
From a lab separating water from sand by boiling it off, the starting mixture had 100.00 grams. The dry sand measured 82.00 grams. How much of the water boiied off?
a)
it is not possible to be solved
b)
8.00 grams
c)
18.00 grams
d)
0.00 grams, because gas does not have masss
110.
Unopened carbonated drinks like Coke are:
a)
heterogeneous mixtures
b)
all liquid substance
c)
solutions
d)
layered solutions
111.
What state of matter is in the carbonation of a drink?
a)
solid
b)
liquid
c)
gas
d)
none of the above
112.
Bronze is a:
a)
compound substance
b)
element substance
c)
solid - liquid solution
d)
solid - solid solution
113.
What is the typical % composition of the air around us if it is well blended:
a)
mostly oxygen
b)
mostly nitrogen
c)
air is a substance
d)
mostly water
100 %
