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WorksheetsMr. Putman's 8th Grade Science 1st Semester Study Guide
Total questions: 48
Worksheet time: 48mins
Name
Class
Date
1.
Matter that has the same composition and properties throughout is called
a)
substance
b)
mixture
c)
elements
d)
particles
2.
When two pure substances are combined so that each of the pure substances retains it's own properties, the result is a _________________.
a)
mass
b)
substance
c)
mixture
3.
All metals except _____________ are solids at room temperature.
a)
Iron
b)
Copper
c)
Nickel
d)
Mercury
4.
In general, ____________ are gases at room temperature.
a)
mixtures
b)
metals
c)
nonmetals
d)
substances
5.
In general, _________ are good conductors of heat.
a)
metals
b)
nonmetals
c)
mixtures
6.
When Rutherford performed his metal foil experiment, he was surprised that most of the _________________ passed straight through the foil.
a)
beta particles
b)
alpha particles
c)
gamma particles
7.
The millions of compounds that exist are made from approximately _______ elements
a)
151
b)
155
c)
115
d)
511
8.
Most of the mass of an atom is found in the _________.
a)
protons
b)
electrons
c)
neutron
d)
nucleus
9.
Vegetable Soup is an example of a __________ mixture.
a)
heterogeneous
b)
homogeneous
10.
A certain atom has 26 protons, 26 electrons, and 30 neutrons. It's mass number is
a)
26
b)
56
c)
54
d)
30
11.
The measurement of the average kinetic energy of the particles of a substance is the _________.
a)
volume
b)
mass
c)
temperature
d)
density
12.
The ___________ is a unit of force.
a)
Mixture
b)
Newton
c)
Mass
13.
_______ Principle helps to explain the relationship between buoyancy and density.
a)
Archemedes'
b)
Pascal's
c)
Bernoulli's
14.
As a sample of matter is that when ________ the cohesive forces increase.
a)
frozen
b)
cooled
c)
heated
d)
untouched
15.
The freezing point of a substance is ________ the melting point of the same substance.
a)
less than
b)
greater than
c)
equal to
d)
not related
16.
__________ energy is the energy of motion.
a)
Kinetic
b)
Chemical
c)
Potential
d)
Thermal
17.
_________ Principle can be applied to any matter that can flow.
a)
Archemedes'
b)
Pascal's
c)
Bernoulli's
18.
A ________ solid has no true melting point.
a)
crystalline
b)
ionic
c)
metallic
d)
amorphous
19.
______________ is a measurement of a fluid's resistance to flow.
a)
Viscosity
b)
Density
c)
Temperature
d)
Buoyancy
20.
______________ is equal to mass divided by volume.
a)
Viscosity
b)
Density
c)
Temperature
d)
Buoyancy
21.
The __________ sample has a pH range between 7 and 14.
a)
neutral
b)
basic
c)
acidic
22.
The __________ sample has a pH range between 0 and 7.
a)
neutral
b)
basic
c)
acidic
23.
The __________ sample has a pH of exactly 7.
a)
neutral
b)
basic
c)
acidic
24.
Density is an example of ____________ property
a)
physical
b)
chemical
25.
All the following are examples of ______________ solidifying, evaporating and melting.
a)
chemical change
b)
physical change
26.
Burning paper is an example of _______________.
a)
physical change
b)
chemical change
27.
The particles that make us a ______ are protons, neutrons and electrons.
a)
mixture
b)
substance
c)
atom
28.
In an atom, electrons travel outside the __________.
a)
protons
b)
electrons
c)
nucleus
29.
The energy levels of the atom are occupied by ___________.
a)
protons
b)
electrons
c)
nucleus
30.
The maximum number of electrons in the second energy level of an atom is ____.
a)
4
b)
8
c)
10
d)
16
31.
Each substance written to the right of the arrow in a chemical equation is a ___________.
a)
product
b)
equation
c)
formula
32.
A substance that speeds up chemical reactions in the human body is an ____________.
a)
cell
b)
insulin
c)
enzyme
d)
antibiotic
33.
The substance being dissolved to form a solution is the ______________.
a)
mixture
b)
substance
c)
solute
34.
The atmosphere of Earth is an example of a ________________.
a)
gas-gas solution
b)
solid-solid solution
c)
pH1 solution
35.
A solution that contains all the solute it can hold under the given condition is _____________
a)
concentrated
b)
precipitate
c)
saturated
36.
A solution that contains a large amount of solute compared to solvent is described as ______________.
a)
concentrated
b)
saturated
c)
mixture
37.
The following properties are characteristics of _______________ : sour taste, conducts electricity, and is corrosive to certain metals.
a)
acidic solutions
b)
aqueous solutions
c)
solid-solid solutions
d)
gas-gas solutions
38.
The following mixtures are examples of a ___________: brass, drinking water and air.
a)
concentration
b)
solution
c)
solute
d)
substance
39.
When the _______________ of table salt and silver nitrate are mixed, a white solid forms.
a)
gas-gas solution
b)
solid-solid solution
c)
aqueous solution
d)
all of the above
40.
When table salt and silver nitrate are mixed, a white solid forms. This white solid is a _____________.
a)
concentrate
b)
saturate
c)
mixture
d)
precipitate
41.
Stainless steel is an example of a ________________.
a)
gas-gas solution
b)
solid-solid solution
c)
aqueous solution
d)
organic compound
42.
The pH1 solution is ___________ acidic than that with a pH2
a)
ten times less
b)
ten times more
c)
equally
43.
A solution with a pH of 13 is a _________.
a)
strong base
b)
neutral base
c)
organic compound
d)
solid base
44.
All organic compounds contain _____________.
a)
sugar
b)
carbohydrates
c)
enzymes
d)
carbon
45.
When amino acids are linked together, the molecule formed is a ___________.
a)
carbohydrate
b)
enzyme
c)
protein
d)
carbon
46.
Sugars and starches are ______________.
a)
carbons
b)
carbohydrates
c)
proteins
47.
The compound C6H12O6 is a
a)
carbohydrate
b)
saturated fat
c)
carbon
d)
protein
48.
A cork is able to float on water because it is less ________ than the water
a)
buoyant
b)
dense
c)
thin
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