STATES OF MATTER/ATOMS
What are the 4 states of matter?
Solid, Liquid, Gas, Plasma
What is a change that does not affect the identity of the substance?
Physical Change
What is 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.
What is the difference between KINETIC and POTENTIAL energy?
Kinetic- Motion
Potential- Stored
What High School did Mr. Sumida go to?
Kalani High School
Which state of matter has the SECOND HIGHEST energy level?
Gas
Name all 5 indicators of chemical change.
Temperature change
Color change
Energy released
Precipitate
Gas (bubble)
What is Newton's Third Law? Draw a picture that illustrates how is was evident in the bottle rocket lab.
Every action has an equal and opposite reaction.
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
Right
If the atomic mass of Nitrogen is 15 and the atomic number is 7, how many protons does nitrogen have?
7 Protons
Write the chemical equation for the production of HCl from the mixing of hydrogen gas (H2) and chlorine gas (Cl2). Label the reactants and the products.
H2 + Cl2 (reactants) --> 2HCl (product)
Give an example of a time in your life when you experienced inertia.
In the car and feeling pushed forward when the driving slams on the breaks.
Calculate the KINETIC ENERGY of a 4 kg skateboarder moving with a velocity of 3.5 m/s.
24.5 Joules
Who's your favorite science teacher in the 9th grade?
Mr. Sumida
Draw the Bohr Model for Carbon
Mr. Sumida will correct.
Which Law tells us that no matter can be created or destroyed.
The Law of Conservation of Mass/Matter
Calculate the force of a 112 kg football player who has an acceleration of 7.9 m/s2.
884.8 Newtons
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
How many semesters of physical science did Mr. Sumida Teach?
3 semesters
What type of bond will happen between Na (a metal) and Cl (a nonmetal)?
Ionic Bond
What are the reactants and products in this chemical reaction?
1N2 + 3H2 → 2N1H3
1N2 + 3H2 (Reactants)
2N1H3 (Products)
Explain how the bottle rocket lab relates to Newton's 3rd Law.
The force of the water pushing out the rocket is equal to the force of the rocket on the water, which launches it up in the air.
If the Law of Conservation of Energy is true and matter cannot be created or destroyed, then why does a baseball eventually stop rolling across a field?
Energy is transferred to friction and heat. No energy is being created or destroyed.
What is Mr. Sumida's pet peeves?
9th-grade students not listening.