Matter (A)
What is a physical change and a chemical change?
Physical Change: A change that does not change the substance.
Chemical Change: A change that can change the substance (making a new substance).
Define the word "System".
A group of interacting parts that move or work together.
A random object has a mass of 150 kg and a speed of 15 m/s. Solve for KE (kinetic energy). Remember: KE = ½mv²
16,875 Joules (16,875 J)
What is the difference between wave and pulse.
Wave is mainly repeated and pulse is just 1 time.
Fourmla for Work: _____
W = Fd
Name the 3 Basic Forms of Matter.
Solid, Liquid, Gas
Define the word "Mass".
A measure of matter in an object. More matter, more mass.
A ball has a mass of 10 oz and it is accelerating 5 mph. What is the force? Remember: F = ma
50 Newtons (50 N)
What is the difference between mass and weight?
Weight - Mainly Gravity
Mass - Matter in object
Fourmla for Force: ______
F = ma
Fill in the blanks. [Fixed / Not Fixed]
State Of Matter:Shape:Volume
Solid:(____):(____)
Liquid:(____):(____)
Gas:(____):(____)
State Of Matter:Shape:Volume
Solid:(Fixed):(Fixed)
Liquid:(Not Fixed):(Fixed)
Gas:(Not Fixed):(Not Fixed)
Define the word "Atom".
The smallest unit of an element that has a chemical identity for each element.
The ball have a force of 18 N and a mass of 3 kg. What is the acceleration of the ball? Remember: F = ma [UNIT FOR ACCELERATION use m/s²]
acceleration = 6 m/s²
Put these type of force in the sections.
"Contact" = []
"Non-Contact" = []
Friction, Gravity, Static, Air Resistance
"Contact" = [Friction, Air Resistance]
"Non-Contact" = [Gravity, Static]
Formula for Density : _____
D (density) = m/v
m = mass
v = volume
List each state of matter from low KE to high KE.
Solid, Liquid, Gas
Solid (Low KE),
Liquid (Med KE),
Gas (High KE)
Define the word "Friction".
A contact force that resists motion between 2 objects.
A wave has a frequency of 15 and a wavelength of 13. What is the wavespeed? Remember: V = f(λ)
A. 194
B. 200
C. 185
D. 145
None of the above
Newtons 3 Laws Of Motion and Describe Them.
1.
2.
3.
1. An object stays at (motion & rest) unless acted by unbalanced force.
2. F = ma (force depends on mass and acceleration)
3. All objects give an equal and opposite force.
Formula for GPE (gravitational potential energy): _____
GPE = mgh
m = mass
g (gravity) = 9.8
h = height
List these type of changes / words in the categories:
Catogries: Physical, Chemical
- Melting, Burning, Evaporating, Flammability, Color, Shape, Reacting to other substances, State Of Matter, Rust
"Chemical" = [Burning, Flammability, Reacting to other substances, Rust]
Define the word "Inerita"
The tendency of objects to resist any change in motion.
A random object has a KE (kinetic energy) of 19,250 and a speed of 20 m/s². Solve for mass.
Remember: KE = ½mv²
Mass = 96.25
19,250 = ½m(20²)
19250 = ½m(400)
48.125 = ½m
96.25 = m
List these type of energy in the categories:
Catogries: Kinetic, Potential
- Thermal Energy, Electrical Energy, Nuclear Energy, Electromagnetic Energy, Chemical Energy, Elastic Energy, Chemical Energy, Sound Energy
"Kinetic" = [Thermal Energy, Electromagnetic Energy, Sound Energy, Electrical Energy]
"Potential" = [ Elastic Energy, Chemical Energy, Nuclear Energy]
Formula for GPE: _____
Formula for KE: _____
Formula for Work: _____
Formula for Force: _____
GPE = mgh
KE = ½mv²
W (work) = Fd
F (force) = ma