Chemical Bond
What type of reaction always has oxygen as a reactant and will release energy as light and heat?
Combustion
An atom has 12 protons, 13 neutrons, and 12 electrons. What is the atomic number?
24
What quantity causes objects to fall to the ground?
Gravity
A bullet is fired from a gun. If we look at the entire system of the bullet and the gun, is momentum conserved?
yes
How much more kinetic energy does a car travelling at 80 mph have compared to a car travelling at 20 mph?
16x as much energy
What type of reaction breaks down a molecule into two or more parts?
Decomposition
What name is given to the small particles that make up protons?
Quarks
What shape does the path of an object in projectile motion follow?
Parabola
A bullet is fired from a gun. If we look at the system that includes only the bullet, is momentum conserved?
No
Is the amount of kinetic energy an object has more dependent on its mass or velocity?
velocity
What type of reaction releases energy?
Exothermic
How many different flavors of quarks are there?
6
One way to change your velocity and give yourself an acceleration is to speed up or slow down. What is the other way?
changing your direction
A bullet is fired from a gun. If we look at the system that includes only the gun, is momentum conserved?
No
what is the rate at which work is done?
Power
What type of reaction specifically absorbs heat energy?
Endothermic
Which model of the atom was the first to propose an electron?
Thomson Model
Which of the following angles will cause a cannon ball to fire the greatest distance?
45 degrees
Newton's second law states that if no net force is exerted on a system, no acceleration occurs. Does this mean that there is no change in momentum as well?
Yes, no acceleration means no change in velocity, which means no change in momentum
You push a lawnmower across the yard with a 300 N force. If the yard is 20 meters long, how much wok did you do?
6000 J
The speed at which reactants turn into products is known as what?
Reaction Rate
What is an alternate name for the Thomson Model?
Plum Pudding Model
If a cheetah can maintain a constant speed of 25 m/s, it travels 25 meters every second it is running. At this rate, how far will it travel in 10 seconds?
250 meters
Newton's third law states that the forces occur in equal and opposite pairs in a system. Does this mean that the impulse on a system must be equal and opposite?
Yes, two objects would apply an equal force on each other over the same time period, so the impulse would be the same
What is the potential energy of a 5 kg bowling ball sitting at the top of a 12 meter tall hill?
600 J