Download 8th CRCT study guide

NAME _______________________________________ DATE_____________________ PER.________
CRCT STUDY GUIDE
Science
Grade: 8
Domain: Structure of Matter
Domain Description
Structure of Matter refers to distinguishing between atoms and molecules, pure substances and mixtures,
physical and chemical properties, and physical and chemical changes in matter. This domain also refers to
understanding the organization of the Periodic Table of Elements and explaining the Law of Conservation of
Matter.
• Compare and contrast atoms and molecules
What are pure substances?
Describe elements, compounds, and mixtures.(Be sure to draw a picture of each):
Elements:
Compounds:
Mixtures:
Explain the difference between pure substances and mixtures.(Include an example and definition in boxes).
Matter
Pure
Substances
Elements
Mixtures
Compounds
Homogeneous
Heterogeneous
• Describe and draw the movement of particles in different states of matter, such as:
Describe:
Draw:
solid
liquid
gas
plasma
What are Physical and Chemical Properties?
Physical Properties
Definition:
Chemical Properties
Definition:
• What are the following physical properties of matter? (Define)
Density
Melting Point
Boiling Point
• What are the following chemical properties of matter?(Define)
Reactivity
Combustibility
• What are some other physical properties and chemical properties of matter not listed above?
Physical Properties
Chemical Properties
• What are physical changes and chemical changes in matter?
Examples of Physical Changes
Examples of Chemical Changes
• How is the periodic table organized?
Periods:
Groups:
What elements are categorized as metals, nonmetals and metalloids? Color and label the periodic Table to show
each (Include: Noble Gases)
• What is the Law of Conservation of Matter? Give examples.
Law of Conservation of Matter(Define)
Examples

Label the Products and Reactants in the following chemical equation
C𝐻4 + 𝑂2
2C𝑂2 + 𝐻2 𝑂
________________
__________________
How many atoms of each element are on each side of the chemical equation?
C = __________
C = __________
H = __________
H = __________
O = __________
O = __________
Is the equation balanced?
____________
Science
Grade: 8
Domain: Force and Motion
Domain Description
Force and Motion refers to describing the relationship between force, mass, and the motion of objects including
the effects of simple machines. This domain also refers to explaining the relationship between mass and gravity,
comparing and contrasting series and parallel circuits, and recognizing that electric currents and magnets can
exert force on each other.
What is the relationship between velocity and acceleration?
What is the formula for the following terms?
Formulas
Write out the variables involved.
Speed
Velocity
Acceleration
Distance-Time Graph
Measures:
Leg 1:
Leg 2:
Leg 3:
Leg 4:
Velocity-Time Graph
Measures:
Leg 1:
Leg 2:
Leg 3:
Leg 4:

Give 2 examples of balanced and unbalanced forces:
Balanced Examples
Unbalanced Examples
What are Newton’s three laws:
1st:
2nd:
3rd:
Give an example of each law:
1st:
2nd:
3rd:
• Explain the effect of forces (gravity and friction) on the motion of an object:
• Give examples and draw the following simple machines:
Examples
○ levers
○ inclined planes
○ pulleys
Picture
○ wedges
○ screws
○ wheels and axles
• How and why does every object exert gravitational force on every other object:
• What are the factors that determine the gravitational force exerted on objects:
• Describe the advantages and disadvantages of series and parallel circuits:
How do series and parallel circuits transfer energy differently?
Draw a picture of a series and parallel circuit:
How do electric currents and magnets exert force on each other? Put the correct phrases in the appropriate
boxes. Two opposite charges attract, N attracts S, + attracts -, like poles repel, like charges repel, two
opposite poles attract, can be used to make electricity, can be used to make magnetism
Magnetism
Electricity
Science
Grade: 8
Domain: Energy and its Transformation
Domain Description
Energy and its Transformation refers to understanding the Law of Conservation of Energy, the
relationship between potential and kinetic energy, comparing and contrasting forms of energy, and describing
how heat is transferred. This domain also refers to investigating light, sound, electromagnetic, and mechanical
waves.
What is the Law of Conservation of Energy?
Describe the relationship between potential and kinetic energy:
At what point does the roller coaster have
the greatest potential energy? _______
At what point does the roller coaster have
the greatest kinetic energy? _______
What is the relationship between PE & KE?
Determine if the following examples are KE (Kinetic Energy) or PE (Potential Energy)
________A car is traveling 45 mph.
________ A rock is on a ledge 5 meters high.
________ A car is resting at the top of a hill.
________ A ball is thrown into the air and is still moving.
________ A ball rolling on the ground.
Give 5 real world examples of each type of energy:
○ heat:
○ light:
○ electricity:
○ mechanical motion:
○ sound:
Describe the transfer of heat by different processes, such as:
○ the collision of atoms in matter by conduction
Draw a picture:
○ the movement through space by radiation
Draw a picture:
○ the flow of currents in a liquid or gas by convection
Draw a picture:
What are the characteristics of electromagnetic and mechanical (sound) waves
What is another name for light and sound waves?
Light:
Sound:
Label the different types of electromagnetic waves in the boxes below.
•
Describe how the behavior of light waves is manipulated in different processes:
reflection
refraction
diffraction
absorption
Explain how the human eye sees objects and colors in terms of wavelengths:
Colors
Wavelengths
• Describe how the behavior of waves is affected by medium:
air
water
solids
Relate the properties of sound to the following everyday experiences

Doppler Effect:

The sound from fireworks not matching what you see:
Explain how the parts of a wave are affected by changes in amplitude and pitch
Amplitude
Pitch
Identify the parts of a wave using a diagram.
1. _____________________________________________________________________
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2.
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