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WorksheetsHSPSPRAC
Total questions: 159
Worksheet time: 2hrs 18mins
Name
Class
Date
1.
When a firecracker explodes, chemical energy changes to light and sound energy. This is an example of how energy:
a)
Can be transformed as well as created or destroyed.
b)
Can be transformed but not created or destroyed.
c)
Cannot be transformed, created, or destroyed.
d)
Cannot be transformed and created, but can be destroyed.
2.
The stored energy in a battery can BEST be described as:
a)
Thermal
b)
Nuclear
c)
Kinetic
d)
Chemical
3.
Newton's 3rd Law states that:
a)
An object in motion will stay in motion unless acted on by an unbalanced force.
b)
For every action, there is an equal and opposite reaction.
c)
The acceleration of an object depends on the mass of the object and the force applied to it.
d)
Energy cannot be created or destroyed, only transferred.
4.
A metal spoon is used to stir a pot of boiling soup. The person holding the spoon feels the spoon get hot. Which BEST describes the transfer of heat in the spoon?
a)
Radiation
b)
Electrical
c)
Conduction
d)
Convection
5.
How fast do electromagnetic waves travel?
a)
Speed of sound
b)
Speed of light
c)
We currently do not know
d)
It depends on the type of wave
6.
An atom has 29 protons, 29 electrons, and 35 neutrons. What is the mass number of the atom?
a)
29
b)
35
c)
93
d)
64
7.
Which pair of elements is most similar?
a)
Ca and F
b)
Na and Cl
c)
Ne and Ar
d)
Li and Ne
8.
In the periodic table, the rows are called ___________ and they tell us _________.
a)
Groups, Number of valence electrons
b)
Groups, Number of energy levels
c)
Periods, Number of valance electrons
d)
Periods, Number of energy levels
9.
An unknown substance has a mass of 37 grams and a volume of 10 cubic centimeters. What is the density of the unknown substance?
a)
3.7 g
b)
3.7 g/cm ^3
c)
370 g
d)
370 g/ cm ^3
10.
What is the volume of an object that has a density of 1.98 grams per centimeter cubed and a mass of 78 g?
a)
154.44 cm ^ 3
b)
154.44 g/cm ^ 3
c)
39.4 cm ^ 3
d)
39.4 g/cm ^ 3
11.
NaCl is a compound that results from what kind of bonding?
a)
Covalent
b)
Ionic
c)
Hydrogen
d)
Metallic
12.
How many hydrogen atoms are in two molecules of glucose 2C6H12O6
a)
48
b)
12
c)
24
d)
12
13.
What numbers should precede Ca and O2 in the following equation?
___Ca + ___O2 --> 2CaO2
___Ca + ___O2 --> 2CaO2
a)
2, 2
b)
3, 2
c)
4, 2
d)
2, 4
14.
Which of the following states the Law of Conservation of Mass?
a)
Atoms are rearranged in a chemical reaction and some join new molecules.
b)
Two compounds combine to form a new compound with different properties.
c)
Mass cannot be created or destroyed in a chemical reaction.
d)
Energy is neither created nor destroyed in a chemical reaction.
15.
Is the following equation balanced or unbalanced?
AlBr3 + 3K --> 3KBr + Al
AlBr3 + 3K --> 3KBr + Al
a)
Balanced
b)
Unbalanced
16.
In which kind of chemical reaction do substances combine with oxygen to produce energy in the form of heat or light?
a)
Synthesis
b)
Decomposition
c)
Combustion
d)
Single Replacement
17.
The weight of a person on Earth is 6 times his or her weight on the Moon. What type of force is responsible for a person's weight?
a)
Inertia
b)
Electromagnetic
c)
Gravitational
d)
Mechanical
18.
A force of 20 N acts on a 5 kg block. What is the acceleration?
a)
4 g
b)
4 m/s
c)
50 m/s
d)
50 g
19.
What force is required to accelerate a car at a rate of 2 m/s/s if the car has a mass of 3000 kg?
a)
1500 N
b)
1500 g
c)
6000 g
d)
6000 N
20.
What is the formula for Newton's 2nd Law of Motion?
a)
F = MA
b)
F = M/A
c)
D = MV
d)
D = M / V
21.
Which of the following explains the difference between speed and velocity?
a)
Velocity has motion, and speed does not.
b)
Velocity has direction, and speed does not.
c)
Velocity involves time, and speed does not.
d)
Velocity involves acceleration, and speed dos not.
22.
Dividing the total distance traveled by the total time is how to calculate.
a)
Average speed
b)
Average velocity
c)
Average acceleration
d)
Average motion
23.
A space shuttle moving through space.
Which law below best explains why a space shuttle is able to suddenly change direction in outer space?
Which law below best explains why a space shuttle is able to suddenly change direction in outer space?
a)
Newton's First Law of Motion (Inertia law)
b)
Newton's third law of motion (action-reaction principle)
c)
the law of universal gravitation (objects with mass attract each other)
d)
newton's second law of motion (net force causes acceleration)
24.
The following graph shows the distance an object travels during a 12-second period.
At which time interval is the velocity zero?
At which time interval is the velocity zero?
a)
0-5 sec
b)
5-8 sec
c)
8-10 sec
d)
10-12 sec
25.
Which subatomic particle has no net charge and is found within the nucleus?
a)
electron
b)
neutron
c)
proton
d)
cation
26.
How many neutrons are most likely found in an atom of Radon (Rn)?
a)
86
b)
136
c)
222
d)
308
27.
The following diagram shows a closed steel cylinder containing Helium (He). The force on top of the piston stays the same. The volume inside the cylinder doubles.
Which most likely causes the volume to increase in the cylinder?
Which most likely causes the volume to increase in the cylinder?
a)
helium atoms increase in size
b)
the temperature increases
c)
the pressure decreases
d)
helium atoms decrease in average speed
28.
All waves transfer
a)
water
b)
energy
c)
sound
d)
light
29.
A runner races in the 100 meter dash. It takes her 10 seconds to finish. What is her average speed?
a)
10 m/s
b)
1000 m/s
c)
100 seconds
d)
10 seconds
30.
Find speed when distance is 142 km and time is 2 hours.
a)
71km/hr
b)
52km/hr
c)
17km/hr
d)
90km/hr
31.
What happens when unbalanced forces act on an object at rest?
a)
the object remains at rest
b)
the object begins moving in an unpredictable direction
c)
the object begins moving in the direction of the net force
d)
the object begins moving opposite to the direction of net force
32.
When a pendulum swings, at which point is kinetic energy highest:
a)
1
b)
2
c)
3
d)
4
33.
When a pendulum swings, at which point is potential energy at its greatest
a)
1
b)
2
c)
3
d)
4
34.
What size resistor would produce a 3 Amp current flow with a 12 Volt battery
a)
1 Ohm
b)
3 Ohms
c)
4 Ohms
d)
12 Ohms
35.
This is an example of a _______ circuit
a)
open
b)
series
c)
parallel
d)
square
36.
This is an example of a ______ circuit
a)
Series
b)
Parallel
c)
Open
d)
Dihexihedral
37.
Gamma rays have the shortest wavelength, and therefore the ____ frequency.
a)
lowest
b)
highest
38.
Sound travels fastest through ______.
a)
solids
b)
liquids
c)
gases
d)
empty space
39.
The material through which a wave travels is called a ____________________.
a)
medium
b)
material
c)
solid
d)
liquid
40.
Which letter represents amplitude?
a)
A
b)
B
c)
C
d)
D
41.
The Doppler effect can cause an apparent change in:
a)
loudness
b)
intensity
c)
pitch
d)
reasonance
42.
Ph of Acids...
a)
1-6.5
b)
1-4.5
c)
6-14
d)
7.5-14
43.
Ph of bases
a)
7-9
b)
7.5-14
c)
1-6.5
d)
6.5-14
44.
Which IS a Simple Machine?
a)
Inclined Plever
b)
Inclined Screwedge
c)
InKlined plane
d)
Inclined Plane
45.
Which is not a type of radioactivity Decay
a)
Alpha
b)
Beta
c)
Gamma
d)
Combustion
46.
Substance Dissolved in Solvent
a)
Solute
b)
Solvent
c)
Solube
d)
Insolube
47.
Dissolving medium in a solution
a)
Solute
b)
Solvent
c)
Solvation
d)
Insolube
48.
Effort Distance / Resistance Distance =
a)
Weight
b)
Mechanical Advantage
c)
Acceleration
d)
Kelvin
49.
An object in rest will remain at rest, object will remain in motion unless acted upon by an unbalanced force
a)
Law of Inertia
b)
Law of gravity
c)
Joshua's Law
d)
Doppler Effect
50.
Example of a compression wave is
a)
Waving your hand
b)
Wave goodbye
c)
sound waves
d)
rocks dropping in water
51.
If it takes 31,500 Joules of hear to warm 750g of water, what was the temperature change? (Specific Heat of water use 4.18 J/gC)
a)
10.05C
b)
10.05K
c)
10.05F
d)
8
52.
Which of the following would be an insulator
a)
copper
b)
steel
c)
plastic
d)
graphite
53.
All gases
a)
have high densities.
b)
have no definite shape or volume.
c)
are lighter than air.
d)
exhibit similar chemical behavior.
54.
Co (cobalt) and Fe (iron) are both
a)
transition metals
b)
halogens
c)
metalloids
d)
metals
55.
Aluminum has _ valence electrons.
a)
7
b)
1
c)
6
d)
3
56.
Which of the following is a chemical property?
a)
color
b)
tendency to rust
c)
mass
d)
malleability
57.
At which point is potential energy greatest
a)
W
b)
X
c)
Y
d)
Z
58.
Name the most penetrating type of radiation.
a)
alpha
b)
beta
c)
gamma
d)
lambda
59.
Name the type of radioactive particle that can be stopped by a sheet of paper.
a)
alpha
b)
beta
c)
gamma
d)
lambda
60.
This is an example of...
a)
Fission reaction
b)
Fusion reaction
c)
Decomposition reaction
d)
Combustion
61.
Melting
a)
liquid to solid
b)
solid to liquid
c)
solid to gas
d)
gas to liquid
62.
What is deposition?
a)
Phase change from gas to solid
b)
phase change from liquid to solid
c)
Phase change from solid to gas
d)
Phase change from liquid to gas
63.
_________ are located to the right of the stair-step line.
a)
Metals
b)
Nonmetals
c)
Metalloids
64.
___________ are located to the left of the stair-step line.
a)
Metals
b)
Nonmetals
c)
Metalloids
65.
___________ are located on the stair step line
a)
Metals
b)
Nonmetals
c)
Metalloids
66.
Properties of Representative Elements:___________
- gases at room temperature
-poor conductors
-very reactive
-brittle (easy to break)
-good insulators
- gases at room temperature
-poor conductors
-very reactive
-brittle (easy to break)
-good insulators
a)
Metals
b)
Nonmetals
c)
Metalloids
67.
Properties of Representative Elements: _________
-solids at room temperature
-properties of both
-semi-conducts
conduction varies on temperature
-solids at room temperature
-properties of both
-semi-conducts
conduction varies on temperature
a)
Metals
b)
Nonmetals
c)
Metalloids
68.
___ are phenomena that occur, seen and unseen, all around us. ___ by definition are disturbances that repeat the same cylce of motion and transfer energy through matter or empty space.
a)
electrolytes
b)
waves
c)
magnetism
69.
______ Waves
- Examples: Light and radio waves
-Does not require a medium
- Examples: Light and radio waves
-Does not require a medium
a)
Electromagnetic
b)
Mechanical
70.
______ Waves
- Examples: sound waves
-Requires a medium. The medium can be SOLID, LIQUID, or gas.
- Examples: sound waves
-Requires a medium. The medium can be SOLID, LIQUID, or gas.
a)
Electromagnetic
b)
Mechanical
71.
a)
Crest
b)
Trough
c)
Transverse wave
d)
longitudinal wave
72.
a)
Crest
b)
Trough
c)
Transverse wave
d)
longitudinal wave
73.
Occurs when two or more waves arrive at the same point at the same time
a)
reflection
b)
refraction
c)
interference
d)
diffraction
74.
Takes place when a wave passes from one medium into another at an angle and bends(changes direction) due to change in speed
a)
reflection
b)
refraction
c)
interference
d)
diffraction
75.
Results when a wave passes through a hole or moves past a barrier and spreads out in the region beyond the hole or barrier
a)
reflection
b)
refraction
c)
interference
d)
diffraction
76.
When a sound moves toward a listener, the or apparent frequency, of the sound increases. This is because the sound waves are compressed closer together and reach the listener with a higher pitch. As the sound source passes by the listener and moves away from the listener, the same sound waves were stretched farther apart. This results in a decrease in the pitch, or apparent frequency. This phenomenon is known as the _____ . It can be heard at a train crossing every time a train approaches, passes, and leaves a crossing while blowing its whistle.
a)
butterfly effect
b)
doppler effect
c)
sound waves effect
77.
__________Law the volume of gas is directly proportional to the absolute temperature and inversely proportional to the pressure
a)
Gay-Lussac's law
b)
Charles
c)
Boyles
78.
__________Law states the volume of a definite quantity of dry gas is inversely proportional to the pressure, provided the temperature remains constant
a)
Gay-Lussac's law
b)
Boyles
c)
Charles
79.
Increasing__________ of a gas will increase PRESSURE, if the volume and number of particles are constant
EX: Can in a fire
EX: Can in a fire
a)
Temperature
b)
Volume
c)
Number of Particles
80.
Reducing the _______ of a gas, will increase PRESSURE, if temperature and number of particles are constant
EX: pistins in the car (the engine)
EX: pistins in the car (the engine)
a)
Temperature
b)
Volume
c)
Number of Particles
81.
Atomic/Molecular Motion of __________
Shape: Definite
Volume: Definite
Examples; Ice cube, the rock, stone cold
Shape: Definite
Volume: Definite
Examples; Ice cube, the rock, stone cold
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
82.
Atomic/Molecular Motion of __________
Shape: Shape of Container
Volume: Definite
Examples: Water
Shape: Shape of Container
Volume: Definite
Examples: Water
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
83.
Atomic/Molecular Motion of __________
Shape: Indefinite
Volume: Indefinite
Examples: Air
Shape: Indefinite
Volume: Indefinite
Examples: Air
a)
Solid
b)
Liquid
c)
Gas
d)
Plasma
84.
__________= Mass/Volume
(remember My Dear Valentine)
(remember My Dear Valentine)
a)
Density
b)
Mass
c)
Velocity
85.
Mono means
a)
1
b)
4
c)
2
d)
10
86.
Di means
a)
2
b)
4
c)
10
87.
Tetra means
a)
4
b)
10
c)
7
88.
Nona means
a)
4
b)
9
c)
10
89.
Deca means
a)
7
b)
10
c)
2
90.
__________ combines to from a larger compouned
EX: Element + Element → Compound or
A + B= AB
2Na + Cl2= 2NACL
EX: Element + Element → Compound or
A + B= AB
2Na + Cl2= 2NACL
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
91.
______________ is breaks down into smaller parts.
Compound→ _______ Element + _______ Element ______ or
Compound→ ___ Coumpound ____ + ___ Compound ___
AB= A + B or 2 H2O = 2H2 + O2
Compound→ _______ Element + _______ Element ______ or
Compound→ ___ Coumpound ____ + ___ Compound ___
AB= A + B or 2 H2O = 2H2 + O2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
92.
_______ is one atom changes places
Element + Compound→Element + Compound
A + BC = B + AC
Cu + 2AgNO3= 2Ag + Cu(NO3)2
Element + Compound→Element + Compound
A + BC = B + AC
Cu + 2AgNO3= 2Ag + Cu(NO3)2
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
93.
____________ is 2 atoms change places
Compound + Compound→ Compound + Compound
AB+CD=AD+CB
CaCO3 + 2HCl=CaCl2+H2CO3
Compound + Compound→ Compound + Compound
AB+CD=AD+CB
CaCO3 + 2HCl=CaCl2+H2CO3
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
94.
Movement of electrons through a circuit
a)
electricity
b)
static
c)
friction
d)
induction
95.
_____ electricity results from the buildup of electric charges on an object
a)
friction
b)
conduction
c)
static
96.
The buildup of ____ can be caused by friction, conduction, or induction.
a)
current
b)
voltage
c)
charges
97.
Rubbing two objects together
a)
friction
b)
induction
c)
conduction
98.
Transfer by not touching
a)
friction
b)
induction
c)
conduction
99.
Electrons flow through direct contact
a)
friction
b)
induction
c)
conduction
100.
Electrons changed directions at regular intervals
EX: Gas driven generator or lights in our house
EX: Gas driven generator or lights in our house
a)
alternating current
b)
direct current
101.
electrons move in same directions
EX: Batteries in your car or batteries in your flashlight
EX: Batteries in your car or batteries in your flashlight
a)
alternating current
b)
direct current
102.
Ohms Law:
a)
V=IR
b)
V=OR
103.
To get electrons flowing through a circuit, a _____ is applied. ____, which is measured in volts (V), is the potential difference in electrical potential energy between two places in a circuit. In other words, ____ is the energy per unit of charge that causes charges to move.
a)
Resistence (R)
b)
Electric Current (I)
c)
Voltage (V)
104.
When charged particles flow through the wire in a circuit, an ______ results. The ___ current is measured in amperes (A). The electron is the charged particle that most likely moves through the circuit.
a)
Resistence (R)
b)
Electric Current (I)
c)
Voltage (V)
105.
The opposition to current is called ____, which is measured in ohms (Ω). Light bulbs and reistors are examples of objects with a __.
a)
Resistence (R)
b)
Electric Current (I)
c)
Voltage (V)
106.
Only one path to follow
Example: flashlight
Example: flashlight
a)
series circuit
b)
parallel circuit
107.
has 2 or more paths
Examples: house
Examples: house
a)
series circuit
b)
parallel circuit
108.
a)
Electric motor
b)
electromagnet
109.
a)
Electromagnet
b)
Electric Motor
110.
An electric current will also produce a ___. A ___ is a region around a magent or current-carryin wire where magnetic forces can be measured.
a)
magnetism
b)
electromagnetic induction
c)
magnetic domains
d)
magnectic fields
111.
____ is the force of attraction or repulsion that is produced by an arrangements of electrons.
a)
magnetism
b)
electromagnetic induction
c)
magnetic domains
d)
magnectic fields
112.
A ___ is a device that converts mechanical energy to electrical energy. In a commerical ___, an electric current is produced when a large coil of wire is rotated in a strong magnetic field.
a)
battery
b)
generator
c)
magnetic domain
113.
Which bar magnet will experience the greatest magnetic attraction?
a)
Magnet 1
b)
Magnet 2
c)
Magnet 3
d)
Magnet 4
114.
There are two ends of a magnet.
What are they called?
a)
North and East
b)
North and West
c)
North and South
d)
South and East
115.
Which illustration correctly shows how the spheres will behave?
a)
b)
c)
d)
116.
In which direction will the box move?
a)
A. in the direction arrow P is pointing
b)
B. in the direction arrow Q is pointing
c)
C. in the direction arrow R is pointing
d)
D. in the direction arrow S is pointing
117.
Which person has gained the most gravitational potential energy ?
a)
a. a 50kg person who lives on the second floor
b)
b. a 50kg person who lives on the third floor
c)
c. a 100kg person who lives on the second floor
d)
d. a 100kg person who lives on the third floor
118.
What type of potential energy is released from a hand warmer?
a)
elastic potential energy
b)
gravitational potential energy
c)
chemical potential energy
d)
kinetic energy
119.
A person places a metal spoon that is at room temperature into a bowl of hot soup. How will the thermal energies of the spoon and the soup be affected?
a)
The spoon will increase in thermal energy, and the soup will decrease in thermal energy.
b)
Both the spoon and the soup will increase in thermal energy.
c)
The spoon will decrease in thermal energy, and the soup will increase in thermal energy.
d)
Both the spoon and the soup will decrease in thermal energy.
120.
Which element has the same number of valence electrons as krypton (Kr)?
a)
neon (Ne)
b)
fluorine (F)
c)
chlorine (Cl)
d)
selenium (Se)
121.
How many neutrons are in an atom of Pu-246?
a)
94
b)
150
c)
152
d)
246
122.
A flashlight bulb connected to a 6-V battery draws a 0.5-A current. What is the power used by the flashlight bulb?
a)
1.25 W
b)
3 W
c)
6.5 W
d)
12 W
123.
Circulation of air or water
a)
conduction
b)
convection
c)
radiation
124.
________________
Define: The transfer of heat energy between materials that are in direct contact with each other
Define: The transfer of heat energy between materials that are in direct contact with each other
a)
convection
b)
conduction
c)
radiation
125.
transfer of energy through space or air
a)
conduction
b)
convection
c)
radiation
126.
A copper ornament has a mass of 0.0693 kg and changes from a temperature of 20.0°C to 27.4°C. How much heat energy did it gain? Cooper's Specific Heat is 390 J/k X
°C. °
Q=Mc∆T
°C. °
Q=Mc∆T
a)
200 J
b)
400 J
c)
390 J
127.
Atomic number is equal to the number of _______ in the atom. It is also the atoms' identity --- it's the small number of the periodic table.
a)
neutrons
b)
isotopes
c)
protons
128.
_______________ is equal to the average mass of all the isotopes of a particular element. It is the big number on the periodic table.
a)
Atomic Number
b)
Atomic Mass
c)
Atomic Exponent
129.
____________ is the same number of protons and different numbers of neutrons.
a)
Isotope
b)
Neutron
c)
Elemental Identity.
130.
Neutrons are found by subtracting the __________ number from the atom. Mass or the BIG # -SMALL #
a)
electronic
b)
atomic
c)
outermost
131.
Carbon 12 has
a)
6 P 6 N 6E
b)
6P 8N 6E
c)
8P 6N 6E
132.
Carbon 14 has
a)
6P 6N 6E
b)
6P 8N 6E
c)
8P 6N 6E
133.
Nitrogen has an atom number of _______, which means that it has _______ protons.
a)
7,7
b)
7, 9
c)
7,3
134.
Number of Electrons = Number of ________ = Atomic Number
a)
Protons
b)
Neutrons
c)
electron cloud
135.
Number of _________= Mass Number - Atomic Number
a)
Electrons
b)
Neutrons
c)
Protons
136.
_____________ transfers electrons from a metal and a nonmetal
a)
Covalent bond
b)
Ionic Bond
137.
___________ shares electrons from nonmetals and nonmetals
a)
ionic bond
b)
convalent bond
c)
polar covalent
138.
__________________ is between a metal and a nonmetal on the periodic table.
a)
Ionic bond
b)
convalent bond
c)
polar covalent
139.
______________ bond is between a nonmetal and a nonmetal on the periodic table, they are CO-Workers on the same side.
a)
Ionic
b)
Covalent
140.
Melting Ice
a)
Physical Change
b)
Chemical Change
141.
Cutting Paper
a)
Physical Change
b)
Chemical Change
142.
Frying Eggs
a)
Physical Change
b)
Chemical Change
143.
Rotting Fruit (Like a brown banana)
a)
Physical Change
b)
Chemical Change
144.
Dissolving salt in water
a)
Physical Change
b)
Chemical Change
145.
Boiling Water
a)
Physical Change
b)
Chemical Change
146.
What is the best definition of a chemical change?
a)
A change in the state of matter in which the form changes but the properties stay the same.
b)
A change in the state of matter in which the material changes into an entirely different material with properties that are different from the original material.
c)
A change in the state of matter in which the material is still the same just in a different form.
147.
Which is not a sign that a chemical reaction has occurred.
a)
A change in mass
b)
bubbling
c)
production of an odor or smell
d)
change in color
148.
Newton's _________ Law
Greater the force, greater the acceleration
Example: Baseball (pitching)
Greater the force, greater the acceleration
Example: Baseball (pitching)
a)
First
b)
Second
c)
Third
149.
Newton's _________ Law
Every action has an equal and opposite reation
Example: Recoil of a gun/car wash
Every action has an equal and opposite reation
Example: Recoil of a gun/car wash
a)
First
b)
Second
c)
Third
150.
Work can be made easier or done faster by using machings. Machines that work with one movement are called____
a)
simple tools
b)
work
c)
simple machines
151.
Simple machines cannot increase the amount of work done, but they can change the size and direction of the force applied. The force applied to a simple machine is called _________. For a machine to work ____ must be applied.
a)
effort force (Fe)
b)
resistance force (Fr)
c)
mechanical advantage
152.
Bob puts 200 grams of ice into a pitcher with 900 grams of water. He gets distracted and comes back later to find that the ice has melted in the water. How many grams of water does Bob now have in the pitcher?
a)
200 g
b)
700 g
c)
1,100 g
153.
How many oxygen atoms are in this chemical formula?
a)
6 oxygen atoms
b)
2 oxygen atoms
c)
3 oxygen atoms
d)
4 oxygen atoms
154.
How much does a 5 gram Hershey's kiss weigh after it is melted in the microwave?
a)
5 grams
b)
3 grams
c)
7 grams
155.
Use a periodic table to determine which two elements have similar chemical properties.
a)
chromium and tungsten
b)
platinum and gold
c)
iron and lead
d)
calcium and sodium
156.
what is the correct order of phases of matter, from least energy to greatest energy?
a)
solid → liquid → gas → plasma
b)
gas → liquid → plasma → solid
c)
liquid → plasma → gas → solid
d)
solid → plasma → gas → liquid
157.
A piece of charcoal from a forest fire started out with 50 grams of C-14. Analysis shows that it now has 6.25 grams of C-14. The half-life of C-14 is about 5,730 years. About how long ago did the forest fire happen?
a)
2,800 years ago
b)
5,700 years ago
c)
11,500 years ago
d)
17,200 years ago
158.
What is the electric charge on the chromium ion in the compound that has the formula Cr2O3?
a)
2-
b)
2+
c)
3-
d)
3+
159.
In the periodic table, which group contains the MOST elements that are in the gas phase at room temperature?
a)
15
b)
16
c)
17
d)
18
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