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WorksheetsPhysical Science: Ch. 7: Foundations of Chemistry
Total questions: 55
Worksheet time: 28mins
Name
Class
Date
1.
What is matter?
a)
anything that has mass and takes up space
b)
a substance that consists of one type of atom
c)
a small particle that is a building block
d)
the amount of mass per unit volume
2.
Which of the following has a positive charge?
a)
proton
b)
neutron
c)
electron
3.
Oxygen is an example of
a)
an element.
b)
a compound.
c)
a substance.
d)
a mixture.
4.
Solutes dissolve in solvents.
a)
True
b)
False
5.
Which of the following is an example of a size-dependent physical property?
a)
volume
b)
state of matter
c)
conductivity
d)
boiling point
6.
The melting point refers to
a)
the point at which a liquid turns into a gas.
b)
the point at which a solid turns into a liquid.
c)
a substances ability to conduct thermal electricity.
d)
the amount of space something takes up.
7.
Which of the following is an example of a gas?
a)
aluminum
b)
water
c)
oxygen
d)
iron
8.
Physical properties can be used to separate a compound.
a)
True
b)
False
9.
Which of the following terms best describes a change in shape, size, form, or state of matter in which the identity of the substance stays the same?
a)
chemical change
b)
element
c)
physical change
d)
conductivity
10.
What happens to the particles in a substance when thermal energy is removed?
a)
the particles move faster
b)
the particles speed does not change
c)
the particles move slower
11.
The ________________ is best described as particles are neither created nor destroyed during a physical or chemical change.
a)
Law of Conservation of Mass
b)
Chemical Reaction
c)
Chemical Equation
d)
Change in Thermal Energy
12.
A _______________ is a characteristic of matter that can only be observed when a substance becomes a different substance.
a)
chemical property
b)
chemical equation
c)
chemical change
d)
chemical reaction
13.
___________ is best described as the amount of a substance in a certain volume.
a)
solubility
b)
density
c)
concentration
d)
state of matter
14.
Which of the following is an example of a balanced equation?
a)
Na + 2Cl -> NaCl
b)
2Fe + S -> Fe2S
c)
CO2 + H2O -> CH4 + 2O2
d)
H2 + O2 -> H2O
15.
Which of the following is NOT an indication that a chemical change may have taken place?
a)
bubbles
b)
odor
c)
solubility
d)
color
16.
Which of the following is NOT a factor that can affect the speed of a chemical reaction?
a)
state of matter
b)
temperature
c)
concentration
d)
surface area
17.
What particles of an atom are found in the nucleus?
a)
proton and electron
b)
electron and neutron
c)
proton and neutron
d)
protons only
18.
Which of the following is a size-independent property?
a)
boiling point
b)
density
c)
magnetism
d)
all are size-independent properties
19.
Matter than consists of only one atom
a)
Homogeneous mixture
b)
Compound
c)
Substance
d)
Element
20.
Matter in which substances are not evenly mixed
a)
homogenous mixture
b)
compound
c)
heterogenous mixture
d)
element
21.
Matter containing atoms of two or more elements chemically bonded together
a)
Element
b)
Heterogenous Mixture
c)
Homogenous Mixture
d)
Compound
22.
What is a sign that a chemical change has occurred?
a)
Size
b)
Shape
c)
Smell/Odor
d)
State of Matter
23.
What physical property can you use to separate a salt water solution?
a)
mass
b)
density
c)
magnetism
d)
boiling point
24.
Temperature measures
a)
Thermal energy
b)
Potential energy
c)
Kinetic energy
d)
Storage energy
25.
Changes that form new substances and make matter change its identity are
a)
Physical changes
b)
Physical properties
c)
Chemical changes
d)
Changes in state of Matter
26.
What is a sign that rusting is a chemical change?
a)
smell
b)
bubbles
c)
change in color
d)
change in state of mater
27.
Which of the following is showing conservation of mass?
a)
2CH4+2O2 > 2CO2+2H2O
b)
CH4 + O2 --> CO2 + H2O
c)
CH4 + 2O2 --> CO2 + 2H2O
d)
CH4 + 2O2 --> 2CO2 + 2H2O
28.
Compounds are different than homogenous mixtures because homogenous mixtures
a)
have more than one atom
b)
don't have a chemical bond
c)
don't have elements
d)
are evenly distributed
29.
Which of the following is an example of a physical change?
a)
Burning
b)
DIssolving
c)
Rotting (fruit going bad)
d)
Rusting (like an old car)
30.
Process thatt happens when more energy is added to a liquid
a)
Melting
b)
Freezing
c)
Vaporization
d)
Condensation
31.
What happens when gas loses energy?
a)
Evaporation
b)
Melting
c)
Sublimation
d)
Condensation
32.
The process of solid turns into gas without ever being a liquid
a)
Deposition
b)
Sublimation
c)
Condensation
d)
Evaporation
33.
What happens whens a substance dissolves?
a)
it melts
b)
it disappears
c)
it is broken apart
d)
it turns into water
34.
As a substance moves from solid to gas
a)
it is losing kinetic nergy
b)
it is gaining kinetic energy
c)
the kinetic energy stays the same
d)
sometimes loses energy sometimes gains it
35.
Is pure water an element, compound or a mixture?
a)
Element
b)
Compound
c)
MIxture
36.
Is silicon an element, compound, or mixture?
a)
Element
b)
Compound
c)
Mixture
37.
What type of a mixture is Coffee?
a)
Homogeneous
b)
Heterogeneous
38.
What type of mixture is air?
a)
Homogeneous
b)
Heterogeneous
39.
Tap water is a ____ mixture.
a)
homogeneous
b)
heterogeneous
40.
Vegetable Soup is a
a)
Compound
b)
Element
c)
homogeneous mixture
d)
heterogeneous mixture
41.
A substance that cannot be separated by any means is a/an
a)
element
b)
compound
c)
mixture
d)
solution
42.
A(n) __________ is a substance in which all the atoms in it are alike.
a)
acid
b)
base
c)
element
d)
compound
43.
Which chemical formula is an example of a compound?
a)
O2
b)
2Cl
c)
H2SO4
44.
Sodium chloride (NaCl) is formed in a chemical reaction between sodium (Na) and chlorine (). What is sodium chloride?
a)
element
b)
mixture
c)
compound
45.
In which state of matter will the atoms of an element be tightly packed together?
a)
Solid
b)
Liquid
c)
Gas
46.
The center of an atom is the nucleus. Te nucleus is made up of:
a)
Protons and Electrons
b)
Protons and Neutrons
c)
Eggs and Bacon
d)
Protons and Atoms
47.
Anything that takes up space and has mass is...
a)
Matter
b)
Work
c)
Power
d)
Newton's 1st Law
48.
Matter is a composition that is always the same is...
a)
Mixture
b)
Atom
c)
Matter
d)
Substance
49.
A neutron is a particle in the atom that has a __________ charge.
a)
Neutral
b)
Negative
c)
Positive
d)
All of these
50.
sodium and potassium react violently with water
a)
physical change
b)
chemical change
51.
pancakes cook on a griddle
a)
physical change
b)
chemical change
52.
tire inflated with air
a)
physical change
b)
chemical change
53.
water absorbed by a paper towel
a)
physical change
b)
chemical change
54.
water freezes at 0⁰C
a)
physical change
b)
chemical change
55.
fireworks explode
a)
physical change
b)
chemical change
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