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08 Final Exam Review

Total questions: 65

Worksheet time: 45mins

Name
Class
Date
1.

A physical change...

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

2.

A chemical change

a)

changes the physical properties of an object, but does not create a new substance.

b)

creates a new substance and cannot be undone.

3.
Which of the following would be a physical change?
a)
slicing bread
b)
baking bread
c)
baking a cake
d)
rotting food
4.
Which of the following is an example of a physical property?
a)
Ability to rust
b)
Ability to burn
c)
Ability to conduct electricity
d)
Ability to react with oxygen
5.
What happens to the fundamental particles during a chemical change?
a)
They remain the same
b)
They break and form new chemical bonds
c)
They become completely different substances
d)
They disappear
6.
Which is an example of a chemical reaction?
a)
paper cut into small pieces
b)
chocolate melting in a pan
c)
flour and sugar mixed in a bowl
d)
cookies baking in an oven
7.
Balance this equation.
_Mg + _Cl2 --> _MgCl2
a)
1, 2,1
b)
already balanced
c)
2,1,1
d)
1,1,2
8.
Balance this equation:
P4+O2  -->  P2O3
a)
3 P4+ O2 --> 2 P2O3
b)
 P4+ O2 --> 2 P2O3
c)
 P4+ 3 O2 --> 2 P2O3
d)
 P4+ 2 O2 --> 3 P2O3
9.
Balance this equation,            
Al2O3 --> Al + O2 
a)
Cannot be balanced
b)
2Al2O3 --> 2Al+3O2 
c)
2Al2O3--> 4Al+3O2 
d)
3Al2O3--> 2Al+O2 
10.
N2 + H2 = NH4
a)
Balanced
b)
Unbalanced
11.

When a substance is burnt in air.

a)

Fire

b)

Chemical Reaction

c)

Combustion

d)

Explosion

12.

The new substances that are formed from a chemical reaction.

a)

Products

b)

Reactants

c)

Results

d)

Chemicals

13.

The ingredients of a chemical reaction.

a)

Reactants

b)

Products

c)

Chemicals

d)

Ingredients

14.

A formula equation in which the number of atoms in the reactants and number of products are equal.

a)

Balanced chemical equation

b)

Coefficient

c)

Product

d)

Reactant

15.

The big number in front of a formula showing how many molecules there are.

a)

Coefficient

b)

Product

c)

Reactant

d)

Subscript

16.

Theory which states that matter is not created or destroyed - the number of reacting atoms will equal the number of atoms in the products.

a)

Law of Conservation of Mass

b)

Law of Conservation of Energy

c)

Law of Conservation of Birds

d)

Law of Conservation of table tennis

17.

The small numbers after an element/atom which show the number of individual atoms present in the molecule.

a)

Subscript

b)

Coefficient

c)

Products

d)

Escalator

18.

Which phase of matter has no definite shape or volume?

a)

Solid

b)

Liquid

c)

Gas

d)

All of the above

19.

Which phase of matter has a definite volume and takes the shape of its container?

a)

Liquid

b)

Solid

c)

Gas

d)

None of these

20.

The tendency of an object to just keep doing what it is doing.

a)

Laziness

b)

F=MA

c)

No Clue

d)

Inertia

21.

Unbalances forces are.....

a)

The combining of forces when two or more forces act on an object

b)

the push or pull that one object exerts on another

c)

forces that are equal in size and opposite in direction

d)

forces that are not equal in size and opposite in direction

22.

Forces can cause a change in an object's motion

a)

True

b)

False

23.

Newton's 1st law is also known as the Law of ​ (a)  

Choose from the below words
Inertia
momentum
friction
air resistance
24.

Nonrenewable energy

resource made of the remains of

ancient organisms and is burned

as an energy source.

a)

fossil fuel

b)

renewable energy

c)

solar energy

d)

nuclear energy

25.

States that energy can be

transformed from one form into

another or transferred from one

region to another, but energy

cannot be created or destroyed.

a)

Law of conservation of energy

b)

Law of Friction

c)

Law of nonrenewable energy resource

d)

Law of inexhaustible energy resource

26.

Energy that is due to motion.

a)

Kinetic energy

b)

electric energy

c)

gravitational energy

d)

potential energy

27.

What is used to measure (but not precise), heat, and mix large amounts of liquids?

a)

beaker

b)

flask

c)

test tube

d)

graduated cylinder

28.

What equipment allows you to see small objects?

a)

beaker

b)

compound light microscope

c)

flask

d)

test tube

29.

What equipment allows you to measure liquid's volume and measures in milliliters?

a)

test tube

b)

beaker

c)

flask

d)

graduated cylinder

30.

Which equipment heats liquids and some stir liquids?

a)

beaker

b)

graduated cylinder

c)

flask

d)

hot plate

31.

Which equipment heats objects with an open flame?

a)

hot plate

b)

thermometer

c)

bunsen burner

d)

beaker

32.

Which equipment allows you to drop a small amount of liquid?

a)

dropper

b)

test tube

c)

graduated cylinder

d)

flask

33.
Acceleration is defined as the CHANGE in 
a)
time it takes for one place to move to another place. 
b)
velocity of an object.
c)
distance divided by the time interval 
d)
velocity divided by the time interval 
34.
Acceleration only takes place when things speed up. 
a)
True
b)
False
35.
In each of the following cases, determine where the car has no acceleration ?
a)
A car shortly after a stoplight turns green.
b)
A car approaching a red light
c)
A car with the cruise control set at 80 km/h
d)
A car moving down a ramp
36.
You are walking and start to slow down. Do you have acceleration? 
a)
yes
b)
no 
37.
A negative acceleration means that your object is _____. 
a)
Going to Wal-mart 
b)
running for president 
c)
speeding up 
d)
slowing down 
38.
Acceleration describes how an object’s velocity is changing.  Which of the following scenarios provides the best example of an accelerating object?
a)
A car driving at a constant speed
b)
A book sitting on top of a high shelf
c)
A toy train traveling in a circle
d)
A toy boat floating in a bathtub
39.
When a car goes around a corner at 20 mph, why do we say it  accelerates?
a)
The car is accelerating because of the velocity is constant
b)
The car accelerates because it's going 20 mph
c)
Cars always accelerate when they are in motion
d)
The car is accelerating because it's changing direction
40.

How would you calculate the speed of a baseball that takes 0.5 seconds to fly a distance of 20 meters?

a)

0.5 ÷ 20

b)

20 × 0.5

c)

20 ÷ 0.5

d)

0.5 - 20

41.

What is the property called when electrons have difficulty traveling through a material?

a)

Voltage

b)

Resistance

c)

Current

d)

Power

42.

What component in a circuit limits the flow of electrons?

a)

Capacitor

b)

Resistor

c)

Inductor

d)

Transformer

43.

What is the function of a potentiometer?

a)

Store energy

b)

Adjust current flow

c)

Increase voltage

d)

Convert energy

44.

What is the unit of resistance?

a)

Volt

b)

Ampere

c)

Ohm

d)

Watt

45.

What is the voltage loss for every amp of current in one ohm?

a)

0.5 volts

b)

1 volt

c)

2 volts

d)

5 volts

46.

How is the voltmeter positioned in relation to the lightbulb in the circuit?

a)

In series

b)

In parallel

c)

Above the circuit

d)

Below the circuit

47.

When an atom loses or gains electrons, this upsets the balance of charges and it forms a(n) __________________________

a)

ion

b)

insulator

c)

conductor

d)

circuit

48.

Losing one or more electrons causes an atom to form a positively charged ion called a ______________.

a)

Cation

b)

Anion

c)

Frion

d)

Proton

49.

These substances which ALLOW the transfer of electrons are called ___________

a)

insulators

b)

conductors

c)

non-metals

d)

anions

50.

Substances which do NOT allow electrons to travel through them are called________________

a)

Insulators

b)

Conductors

c)

Protons

d)

Circuits

51.

_________________ is a form of energy which occurs because of charged particles

a)

Electricity

b)

Kinetic energy

c)

Magnetism

d)

Polarity

52.

_________________ electricity occurs when materials which are insulators are rubbed together and some of the electrons transfer from one material to the other

a)

Static

b)

Current

c)

Circuit

d)

Polar

53.

True/False: The negative side of the battery will have more electrons built up than the positive side.

a)

True

b)

False

54.

True/False: All metals are insulators.

a)

True

b)

False

55.

The unit for energy.

a)

Joule

b)

Ohm

c)

Energy

d)

Current

56.

The unit for resistance.

a)

Joule

b)

Watt

c)

Ohm

d)

Newton

57.

The rate at which energy is supplied or

used.

a)

Power

b)

Ohms

c)

Energy

d)

Watts

58.

The force which opposes the flow of

electrons in a circuit.

a)

Resistance

b)

Voltage

c)

Watts

d)

Current

59.

The energy gained or lost as the current

passes through a component.

a)

Resistance

b)

Voltage

c)

Watts

d)

Power

60.

Objects which attract ferromagnetic metals.

a)

Magnet

b)

Electromagnet

c)

North Pole

d)

Rizzlers

61.

The invisible area surrounding a magnet in

which it can exert its force on other objects.

a)

Magnetic Field

b)

Motor Effect

c)

North pole

d)

Magnet force field

62.

________________ happens when light waves encounter a

medium and causes the particles of the medium to vibrate

and move.

a)

Absorption

b)

Diffraction

c)

Reflection

d)

Refraction

63.

_______________ happens when light waves bounce back as they

hit a surface or a boundary that does not absorb the

entire wave’s energy.

a)

Absorption

b)

Diffraction

c)

Reflection

d)

Refraction

64.

_______________________ is the bending of light waves due to a change in

their speed as they pass through from one medium to

another.

a)

Diffraction

b)

Reflection

c)

Refraction

d)

Scattering

65.

_____________________ of light happens when its waves pass

through a given point or medium.

a)

Scattering

b)

Transmission

c)

Bending

d)

Reflection

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