Physical Science Review Question Preview (ID: 33912)


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What occurs when heat energy is removed from a liquid vapor system in equilibrium?
a) The amount of liquid increases.
b) The amount of liquid decrease.
c) The amount of liquid remains the same.
d)

What occurs in the relationship between heat and temperature in a liquid when it goes through phase change?
a) As heat energy decrease and temperature decreases, condensation occurs.
b) As heat energy increase and temperature decreases, condensation occurs.
c) As heat energy decreases and temperature remains constant, condensation occurs.
d)

Nuclear Fission converts small amounts of matter into ___
a) Small amounts of energy.
b) Large amounts of energy.
c) Medium amounts of energy.
d)

The density of iron is 7.9 g/cm3. What is the weight of a block of iron with a volume of 500 cm3?
a) 3.9kg
b) 3.3kg
c) 3.2kg
d)

What are the types of nuclear radiation?
a) a
b) b
c) c
d) d

Since density is the mass over volume, and the mass stays constant, the rise in density means that the volume of the balloon
a) Stays the same
b) Decreases
c) Increases
d) Doubles

Isotopes ( ie hydrogen-1, hydrogen-2, and hydrogen-3) are atoms of the same element that can differ in
a) Valence electrons
b) Mass of nucleus
c) Same electric charge
d) Same atomic number

Convection is the transfer of energy by the motion of the heated particles in a fluid. Based on this given information, which statement best describes an example of convection?
a) a shirt heated by an iron
b) a puddle of rainwater heated by sunlight
c) a dark-color car heated by sunlight
d) warm air rising in the atmosphere

I usually take a thermos bottle filled with hot coffee to work each day. The thermos bottle demonstrates convection by keeping the coffee hot by:
a) Using a battery-powered heating element
b) Collecting solar heat energy
c) Recirculating hot air inside
d) Slowing heat transfer

What is an exothermic reaction?
a) Rxn in which energy is released
b) Rxn in which energy is absorbed
c) Rxn in which energy is created
d) Rxn in which energy is destroyed.

What is an endothermic reaction?
a) Rxn in which energy is released
b) Rxn in which energy is absorbed
c) Rxn in which energy is created
d) Rxn in which energy is destroyed.

Which statement would best explain what occurs when a precipitate is formed and bond(s) between two atoms are broken and recombined to bond with a new or different atom?
a) A change in the chemical composition of matter
b) A decrease in energy in a system
c) A consistency in the kinetic energy of state of matter
d) A change in the mass in a system

The main scientific difficulty in achieving a controlled fusion process is the
a) Enormous repulsion between nuclei being fused
b) Very large number of gamma rays omitted
c) Very large number of x-rays emitted.
d) Very large number of positrons emitted

14. What best describes the characteristic of an object with a gram to volume ratio that is less than that of water when it is placed in water?
a) Stable
b) Buoyant
c) Weighted
d) Dense

The law of conversation of mass states that in a chemical reaction the mass of the reactants equals the mass of the products. If approximately 20g of water reacts producing about 15g of oxygen, what mass of hydrogen (H2) was produced in this reaction
a) 2g
b) 5g
c) 10g
d) 15g

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