Words to Know
A positively charged particle that is located in the nucleus of an atom is a...
Proton
An atom
False. A vector quantity has both magnitude and direction.
A soccer ball stays still on the grass until a player kicks it. Which of Newton’s Laws does this represent?
A. Newton’s First Law – Law of Inertia
B. Newton’s Second Law – Law of Acceleration
C. Newton’s Third Law – Law of Action and Reaction
A. Newton's First Law - Law of Inertia
What are the two types of mixtures that we talked about in this unit?
Homogeneous and Heterogeneous Mixtures
The number of protons and neutrons in the nucleus of an atom is the:
Mass Number
Who came up with the Plum Pudding Model of the Atomic Theory?
JJ. Thomson
What is the formula for velocity?
Velocity = displacement / time
A person jumps off a small boat and the boat moves backward as they jump forward. Which of Newton’s Laws does this represent?
A. Newton’s First Law – Law of Inertia
B. Newton’s Second Law – Law of Acceleration
C. Newton’s Third Law – Law of Action and Reaction
C. Newton's Third Law - Law of Action and Reaction
Homogeneous Mixtures
This particle has a neutral (or no) charge.
Neutron
True or False: An electron is found in the nucleus of an atom.
False
A microwave has a power rating of 600 watts. If it does 120,000 joules of work to heat up food, how long was the microwave running?
A. 10 seconds
B. 20 seconds
C. 2 seconds
D. 200 seconds
D. 200 seconds.
Time = work / power
Time = 120,000 J / 600 W = 200 s (seconds)
You drop a tennis ball and a feather at the same time. The tennis ball hits the ground first. Which of Newton’s Laws does this demonstrate?
A. Newton’s First Law – Law of Inertia
B. Newton’s Second Law – Law of Acceleration
C. Newton’s Third Law – Law of Action and Reaction
B. Newton's Second Law - Law of Acceleration
Water (H20) is an example of a...
a. Element
b. Distillation
c. Compound
d. Chromatography
c. Compound
Cooking an egg is an example of a __________ change
a. Physical Change
b. Chemical Change
b. Chemical Change
N. Bohr came up with the ____________ model
Planetary
You push a cart with a force of 25 N across a smooth floor for a distance of 5 meters. Assume there is no friction. How much work did you do on the cart?
A. 100 J
B. 125 J
C. 150 J
D. 200 J
B. 125 J
Work = force x distance
Work = 25 N x 5m = 125 J
A rocket launches into the sky. Hot gases blast downward, and the rocket moves upward. Which of Newton’s Laws does this represent?
A. Newton’s First Law – Law of Inertia
B. Newton’s Second Law – Law of Acceleration
C. Newton’s Third Law – Law of Action and Reaction
C. Newton's Third Law - Law of Action and Reaction
Heterogeneous Mixture
An electron has a __________ charge.
Negative
Which of the following correctly describes the structure of an atom?
A. Electrons are found in the nucleus with protons and neutrons
B. Protons and neutrons are in the nucleus; electrons move around the nucleus
C. Atoms are made only of protons and electrons
D. Neutrons move in orbits around the nucleus
B.Protons and neutrons are in the nucleus; electrons move around the nucleus
True or False: Speed = Velocity / time
False.
Speed = distance / time
A skateboard is rolling on a smooth sidewalk. It keeps moving until it hits a crack and stops. Which of Newton’s Laws does this represent?
A. Newton’s First Law – Law of Inertia
B. Newton’s Second Law – Law of Acceleration
C. Newton’s Third Law – Law of Action and Reaction
A. Newton's First Law - Law of Inertia
Come up with your own example of a Heterogeneous mixture that is not cereal with milk or spaghetti with meatballs.
Teacher discretion.