WorksheetsFinal Exam
Total questions: 29
Worksheet time: 23mins
Which of the laws of motion states, “To every action there is an equal but opposite reaction”?
Newton’s 1st Law
Newton’s 2nd Law
Newton’s 3rd Law
Law of Conservation of Momentum
Momentum describes
How much force is needed to change an object’s motion
How much velocity changes in a given amount of time
The tendency of an object to resist a change in motion
The balanced forces on a falling object with a constant speed
A person is on a paddleboard. The person exerts a force on the water with the paddle, causing the water to move. The paddleboard also moves, but in the opposite direction. Which statement best explains why this happens?
Inertia
Newton’s 2nd Law of motion
Newton’s 3rd Law of motion
Law of Conservation of Momentum
3 m/s north is an example of a(n) _____.
speed
velocity
time
acceleration
Motion is a change in _____.
time
speed
velocity
position
The sum of kinetic energy and potential energy within a system is called
thermal energy
chemical energy
electrical energy
mechanical energy
Potential energy is
stored energy
moving energy
the difference between stored and moving energy
the sum of all energy in the system
Kinetic energy is
stored energy
moving energy
the difference between stored and moving energy
the sum of all energy in the system
Which of the following objects would NOT be a good insulator of electric charge?
skin
wood
plastic
rubber
A material through which electrons do NOT flow easily is a(n).
An echo is an example of sound wave
diffraction
reflection
interference
refraction
Which is an example of a compressional wave?
X-ray
gamma ray
sound wave
water wave
Sound waves travel the fastest in.
a solid
a liquid
a gas
empty space
Jenny blends together water, lemon juice and sugar in a pitcher. She has made a
compound
homogenous mixture
pure substance
heterogeneous mixture
Which of the following is an example of Newton's Third Law of Motion?
A book resting on a table
A rocket launching into space
A car accelerating on a highway
Which of the following is Newton's First Law of Motion?
For every action, there is an equal and opposite reaction.
An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.
The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass.
What is the formula for calculating the force applied to an object, according to Newton's Second Law of Motion?
F=ma
F=am
F=m+a
The object has a non-zero acceleration.
Definitely False
Definitely True
Might be True or False
CO2, NaCl, and HCl may all be classified as
elements
compounds
homogenous mixtures
heterogeneous mixtures
Which of the following is not an example of a physical change?
Cutting a piece of string in half.
Crumpling a piece of paper into a ball
Freezing water into an ice cube.
Letting the food in your lunch box rot in your locker.
What is an atom’s nucleus made of?
protons only
protons and electrons
protons and neutrons
neutrons only
Two different isotopes of an element have different
The total number of electrons in the outer shell of a sodium atom is
The chemical bond formed when two atoms share electrons is called a(n)
Covalent bond
Ionic bond
Metallic bond
Electron bond
Which pair of atoms will combine with each other and form an ionic bond?
C and O
C and H
Ca and Mg
Ca and Br
Which element is most likely to gain electrons in a chemical reaction?
Kr
K
Br
Ca
What is the oxidation number of oxygen in most compounds?
6
-2
8
0
How many atoms of oxygen are represented in 2Ca(NO3)2?
(a)
To balance a chemical equation, it may be necessary to adjust the
(a)
