CAS Final Review 2 Question Preview (ID: 14658)
Second Final Review For CAS.
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If the forces acting on a car in motion were unbalanced, any of these could happen except
a) the speed of the car might increase
b) the car might change its direction of travel
c) the speed of the car might decrease until it stops
d) the car might continue at the same speed and direction
Which of these best describes the structure of an atom?
a) a central, positive nucleus with orbiting protons
b) a central, positive nucleus with orbiting electrons
c) a central, negative nucleus with orbiting protons
d) a central, negative nucleus with orbiting electrons
Which of these makes the atoms of one element different from the atoms of another element?
a) number of orbitals
b) number of protons
c) number of neutrons
d) number of electrons
Which of these best describes what happens to the water molecules when the temperatures of liquid is increased?
a) the bonds between the molecules become weaker, and the molecules move farther apart
b) the bonds between the molecules become stronger, and the molecules move farther apart
c) the bonds between the molecules become weaker, and the molecules move closer together
d) the bonds between the molecules become stronger, and the molecules move closer together
Which scientist developed the atomic model with electrons moving around a central nucleus in definite orbitals?
a) Miels Bohr
b) Max Planck
c) Albert Einstein
d) Joseph John Thomson
A block of iron will react with acid to produce hydrogen gas. Which of these describe what will happen if iron powder were used instead of a block of iron?
a) The reaction would happen at the same speed
b) The speed of the reaction would decrease
c) The speed of the reaction would increase
d) The reaction would no loner take place
Peanut butter had a pH of 6.28. Which of these best describes peanut butter?
a) weak acid
b) weak base
c) strong acid
d) strong base
Which of these measurements represents a n object with the highest density?
a) a mass of 10 grams and a volume of 10 milliliters
b) a mass of 10 grams and a volume of 100 milliliters
c) a mass of 100 grams and a volume of 10 milliliters
d) a mass of 100 grams and volume of 100 milliliters
Which object is the best example of potential energy?
a) rolling ball
b) dropped rock
c) compressed spring
d) speeding motorcycle
Which of these best describes why heat is produces when a flashlight is turned on?
a) Heat is converted to light by the battery when the flashlight is turned on
b) Heat is produces from the excess light that escapes when the flashlight is turned on
c) Heat is product of the energy transformation that occurs when the flashlight is turned on
d) Heat is created by the battery and some of the heat is used to produce light for the flashlight
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