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Which of the following lists electromagnetic radiations
from lowest to highest energies?
•Microwaves, radio waves, visible light, X-rays
•Radio waves, infrared radiation, visible light,
ultraviolet radiation
•Radio waves, microwaves, ultraviolet radiation, visible
light,
•Infrared radiation, visible light, gamma radiation, Xrays
•Radio waves, infrared radiation, visible light, ultraviolet
radiation
Sorry, but no.
Noble gases are nonmetallic elements that do not
readily react with other elements. What accounts for
this non-reactivity?
•Noble gases have an even number of protons and
electrons.
•Noble gases have an even number of protons and
neutrons.
•Noble gases have eight valence electrons.
•Noble gases have an atomic number of eight.
Noble gases have eight valence
electrons.
Too bad!
Which of the following nuclear decay particles would
inflict the most tissue damage if ingested?
Gamma
Beta particle
Alpha particle
X-ray
Alpha particle
Try
again!
Refer to the equation below. It gives off heat as a product.
It is a/an _____ reaction. P4 + 5O2 -> P4O10
Exothermic
Neutralization
Endothermic
decomposition
Exothermic
Sorry, but no.
An ionic bond results from _____ electrons, while a
covalent bond is a result of _____ electrons.
Shared, transferred
Transferred, shared
Outer, inner
Inner, outer
Transferred,
shared
Two electrons are located 10-10 meters apart (the diameter
of a typical atom). Identify the effect of the electrostatic
force between the two electrons and its magnitude (size)
compared to the gravitational force between the electrons.
•The electrostatic force is repulsive and stronger than the
gravitational force.
•The electrostatic force is repulsive and weaker than the
gravitational force.
•The electrostatic force is attractive and stronger than the
gravitational force.
•The electrostatic force is attractive and weaker than the
gravitational force.
•The electrostatic force is repulsive and stronger than the
gravitational force.
A battery provides a total of 2.0 volts to a video game
controller. If the controller has an operating resistance of
4.0 ohms, the current through the video game controller
is
2.0 A.
0.50 A.
8.0 A.
6.0 A.
0.50 A.
Don’t smile, you missed the
question.
Which of the following correctly places the phases of water
in order from the most dense to the least dense?
Solid, liquid, gas, plasma
Plasma, gas, liquid, solid
Liquid, solid, gas, plasma
Liquid, gas, plasma, solid
Liquid, solid, gas,
plasma
You are no star!
Which two particles have approximately the same mass?
Proton and electron
Proton and neutron
Neutron and alpha particle
Electron and alpha particle
Proton and
neutron
I think that I
am wrong!
When a potassium atom (K) forms a potassium ion (K+), the
atom:
Gains a proton
Gains an electron
Loses a proton
Loses an electron
Loses an electron
Clara wants to determine the volume of an ice cube. She
places the cube into a graduated cylinder and waits for it to
melt. Is this an accurate way to determine the volume of
the ice cube?
Yes, the melted ice cube will be the same volume as the
frozen ice cube.
No, the melted ice cube has a smaller volume than a frozen
ice cube, because liquid water is denser than solid water.
No, water vapor will be lost to the air during melting,
which will change the measured volume of the two states.
Yes, even though the volume of water in ice and liquid form
is different, it is not enough to be measurable.
No, the melted ice cube has a
smaller volume than a frozen
ice cube, because liquid
water is denser than solid
water.
Hear ye, hear ye,
you are wrong!
The nucleus of an atom of gold-198 contains
79 protons and 119 neutrons
79 protons and 118 neutrons
197 protons and 197 neutrons
198 protons and 198 neutrons
79 protons and 119
neutrons
Sorry, but no.
Which substance represents a compound?
C
O2
CO2
CO
CO2
Stop, go back.
Which process represents a chemical change?
Melting of ice
Corrosion of iron
Evaporation of alcohol
Crystallization of sugar
Corrosion of iron
Nope, you chose
poorly!
Which of the following substances is acidic?
Liquid soap
Vinegar
Baking soda
flour
Vinegar
Sorry, but no.
Each hydrogen atom has one electron and needs two to
complete its first energy level. Since both hydrogen atoms
are identical, neither atom dominates in the control of the
electrons. The electrons are shared equally.
This make H2 a
Polar bonded covalent molecule
Non-polar covalent molecule
Polar covalent compound
Non-polar ionic compound
Non-polar covalent
molecule
I think that I
am wrong!
Mark adds liquid water to an ice tray and places it in the
freezer. What happens?
•Thermal energy flows from the higher-energy phase
(water) to the lower-energy phase (cold air).
•Thermal energy flows from the higher-energy phase (cold
air) to the lower-energy phase (water)
•Cold radiates from the cold air into the warm water.
•The insulation of the ice tray keeps the temperature from
changing much.
Thermal energy flows from
the higher-energy phase
(water) to the lower-energy
phase (cold air).
Sorry, go back and
try again.
Select the type of matter that includes solutions.
Ionic compounds
Molecular compounds
Heterogeneous mixtures
Homogeneous mixtures
Homogeneous
mixtures
A solution is made by dissolving 10 g of salt in 500 g of water.
Identify the mass of the resulting solution.
500 g
More than 500 g but less than 510 g
510 g
More than 510 g
510 g
Why are you smiling, you got it
wrong!
Identify the correct description of a saturated
solution.
A solution of an ionic solid in an ionic liquid
A solution that is composed of multiple solutes and solvents
A solid solution made by cooling a hot mixture of two
liquid metals
A solution in which no more solute can dissolve at the given
temperature
A solution in which no
more solute can
dissolve at the given
temperature
NO!!
Increasing the current applied to an
electromagnet will affect which of the following?
The voltage delivered by the electromagnet
The magnetic field exerted by the electromagnet
The mass of the electromagnet
The nuclear force delivered by the electromagnet
The magnetic field
exerted by the
electromagnet
Try
again!
A wet cell battery is an example of stored potential energy.
Once connected to a load, the stored energy is converted.
Describe the conversion of energy that results in the
movement of the hands in a battery-powered clock.
Chemical to electrical to mechanical
Chemical to thermal to electrical
Chemical to mechanical to electrical
Chemical to electrical to thermal
Chemical to
electrical to
mechanical
Do not pass go, do not
Slide 68collect $200
A given radionuclide RA has a half life of 100 years.
Another radionuclide RB has a half life of 25 years. One
thousand kilograms of each material are placed in a
hazardous waste receptacle. How many of each will be
around after 100 years?
500 kg A and 62.5 kg RB
500 kg A and 125 kg RB
250 kg A and 250 kg RB
250 kg A and 125 kg RB
500 kg A and 62.5
kg RB
I think that I
am wrong!
Fission and fusion are two methods of producing
nuclear energy. Which method is used in nuclear
power reactors and why?
Fusion, because it creates less waste.
Fission, because it produces more energy per atom of fuel.
Fusion, because it produces more energy per atom of fuel.
Fission, because fusion requires a large input of energy in
order to occur.
Fission, because fusion
requires a large input of
energy in order to occur.
NO, NO!!
Which of the following is able to convert all the
thermal energy produced into useful work?
Nuclear power reactor
Gasoline engine
Stovetop range
None of the above
None of the above.
I think that I
am wrong!
Make your wager
Heat will transfer from a high temperature area to a low
temperature area by several different methods. The heat
transferred by an electric stovetop coil to the teakettle is
an example of transfer by
Convection
Combustion
Radiation
conduction
conduction
Go Back and
try again.