Scientific Inquiry
Chemistry
FORCE AND MOTION
ENERGY
Work and power
100
What are the two types of Observations we make in Science? Describe them.
Quantitative= Using Numbers
Qualitative = Using our 5 senses without numbers.
100
What are the 4 states of matter?
Solid, Liquid, Gas, Plasma
100
What is the law of inertia?
An object in motion will stay in motion and an object at rest will stay at rest unless acted upon by an unbalanced force.
100
What is the difference between KINETIC and POTENTIAL energy?
Kinetic- Motion
Potential- Stored
100
What is the unit for Power ?
Watts
200
What are the 4 base units of Measurement in the Metric System? What does each one measure?
Meter- Length
Liter- volume
second - time
gram - mass
200
Name all 5 indicators of chemical change.
Temperature change
Color change
Energy released
Precipitate
Gas (bubble)
200
What is Newton's Third Law? Give an example of this in the real world.
Every action has an equal and opposite reaction.
200
Calculate the POTENTIAL ENERGY of a 3 kg boulder about to roll down a 12 meter tall mountain. Use gravity=9.8 m/s2
352.8 Joules
200
How many Watts of power is equal to 1 Horsepower?
746
300
What are the steps of the scientific method?
Observation
Research
Hypothesis
Experiment
Conclusion
Share Results
300
Draw and label the hydrogen bond between water molecules
300
What are the four types of Friction?
Static, Sliding, Rolling, Fluid.
300
Calculate the KINETIC ENERGY of a 4 kg skateboarder moving with a velocity of 3.5 m/s.
24.5 Joules
300
If you apply 700 J of Energy pushing a car for 1 minute and 30 seconds. How much power did you do?
7.77 Watts
400
What are the Independent, Dependent, and Constant variables in an experiment?
Independent- the thing that we change in the experiment to see if it makes a difference
Dependent - the thing we measure to see change
Constant - the things that remain the same.
400
Which group on the periodic table is known for being extremely reactive?
Please name at least 2 elements that are in this group.
Alkali Metals
Sodium, Potassium, Lithium, Cesium, Rubidium
400
Calculate the force of a 112 kg football player who has an acceleration of 7.9 m/s2.
884.8 Newtons
400
If the total energy in the system is 100 J, how much POTENTIAL ENERGY does it have when the KINETIC ENERGY = 37 Joules and 10 Joules are released as friction/heat.
54 Joules
400
If a car Bulldozer pushes a mound of dirt for 25 meters and the force applied in the bulldozer was 1500 N. How much Work was done by the bulldozer?
37500
500
What are the four different types of graphing patterns that we learned about?
horizontal
Proportional
Quadratic
Inverse
500
What is the Octet Rule?
The octet rule states that atoms want to be stable, so they create chemical bonds with other atoms to find stability by having their valence electron shell full of 8 electrons.
500
What are the 3 different arrangements of Newton's Second Law?
Force = Mass x Acceleration
Mass = Force / Acceleration
Acceleration = Force / Mass
500
If the Law of Conservation of Energy is true and Energy cannot be created or destroyed, then why does a baseball eventually stop rolling across a field?
Energy is transferred by friction and heat. No energy is being created or destroyed.
500
How much horse power would a wood chuck have if it has 30,000 W?
40.2 Hp