Physical Science Questions

Which of the following should be used to boil 75 milliliters of a

liquid?

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21 22 23 24 25

25% 25%25%25%A. B.

C.

D.

What change should be made to cause the pendulum to swing to

point X?

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21 22 23 24 25

25% 25%25%25%A. Using a ball with smaller mass

B. Swinging the ball with less force

C. Lengthening the string holding the ball

D. Starting the ball from a higher position

Maintaining moisture content is one aspect of keeping food fresh. Which of these experimental

designs would be best to use to determine whether plastic sandwich bags help keep food

fresh?

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21 22 23 24 25

25% 25%25%25%A. B.

C. D.

Which of these models shows the atom with the most mass?

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21 22 23 24 25

25% 25%25%25%A. B.

C. D.

Diamonds have a density of 3.5 g/mL. Where would a diamond come to rest if dropped into the cylinder shown below?

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21 22 23 24 25

25% 25%25%25%A. On top of

the etherB. On top of

the waterC. On top of

the mercuryD. On the

bottom of the container

After an experiment, researchers concluded

that one species of bacteria could break down

a certain kind of hazardous waste. Beforeannouncing this conclusion, the

researchersshould —

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25% 25%25%25%

A. repeat the experiment to make sure the results are reproducible

B. write a formal hypothesis statementC. ignore the results of similar

experiments by other researchersD. plot the data on appropriate graphs

A chemical reaction that releases heat is classified as —

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21 22 23 24 25 e

xoth

erm

ic

repl

acem

ent

syn

thes

is

auto

nomic

25% 25%25%25%A. exothermicB. replacementC. synthesisD. autonomic

Which of these molecules is composed of exactly four atoms?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 K

ClO4

NH4

Cl2

O

H2O

2

25% 25%25%25%A. KClO4

B. NH4

C. Cl2O

D. H2O2

All of these are subatomic particles

EXCEPT —

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21 22 23 24 25

ions

pro

tons

ele

ctro

ns

neu

trons

25% 25%25%25%A. ionsB. protonsC. electronsD. neutrons

All of these could cause disruptions in the reception of radio waves

EXCEPT —

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21 22 23 24 25

clo

ud c

over

lightn

ing b

olts ra

in

vis

ible

light

25% 25%25%25%A. cloud coverB. lightning boltsC. rainD. visible light

How many atoms of oxygen are in one

molecule of Mg(ClO)2?

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21 22 23 24 251 2 3 4

25% 25%25%25%A. 1B. 2C. 3D. 4

The picture shows one part of the periodic

table of the elements. According to thisinformation, how many protons does a

carbonatom contain?

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21 22 23 24 25

25% 25%25%25%

A. 0.0111B. 6C. 12.0111D. 18

What is the main reason that this label has

the instructions “Shake well before using”?

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25% 25%25%25%

A. Oil does not easily mix with vinegar.

B. Chemical changes occur when different liquids are mixed.

C. Salt does not quickly dissolve in a mixture.

D. Solutions containing suspended air have fewer calories.

How many electrons does gold (Au) have?

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21 22 23 24 25

25% 25%25%25%

A. 79B. 118C. 197D. 276

Which phase of matter is represented by steam?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

21 22 23 24 25 P

lasm

a

Solid

Liq

uid G

as

25% 25%25%25%A. PlasmaB. SolidC. LiquidD. Gas

The picture shows the design of an electric

circuit that fails to produce light. This circuit

could be made to work by —

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21 22 23 24 25

25% 25%25%25%A. using a bulb with higher wattage

B. moving the switch to the open position

C. connecting another 9-volt battery

D. attaching the wires to separate poles on the light

This tool is used to measure —

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25% 25%25%25%A. volumeB. pHC. temperatureD. weight

All of these are important pieces of safety equipment EXCEPT —

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21 22 23 24 25

a fi

rst-a

id k

it

a fi

re e

xtin

guisher

an e

ye-w

ash

stat

ion

a g

radu

ated

cyl

inder

25% 25%25%25%A. a first-aid kitB. a fire extinguisherC. an eye-wash

stationD. a graduated

cylinder

Which of these contains 90 milliliters of solution?

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25% 25%25%25%A. B.

C. D.

Which of these models best illustrates a

mixture?

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21 22 23 24 25

25% 25%25%25%A. B.

C. D.

The model shows the structural formula for

methane. Which of these is the properchemical formula for methane?

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25% 25%25%25%

A. 4CHB. CH–4

C. 2CH2

D. CH4

This reaction may be classified as exothermic because —

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25% 25%25%25%

A. hydrogen bonds with chlorine

B. two molecules of acid are formed

C. the equation is balancedD. heat is produced

In this model of a periodic table, a group of elements that are arranged in a

vertical column is called a —

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25% 25%25%25%

A. gasB. familyC. clusterD. precipitate