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WorksheetsForce & Motion/Chemistry Review
Total questions: 35
Worksheet time: 1hrs 10mins
Green object is moving at a faster constant speed than Red
Red object is moving at a faster constant speed than Green
Green object is moving at a slower constant speed than Red
Red object is moving 2 times faster than Green
Carlos is pulling his little brother on a sled at a constant speed. He is exerting a force of 128 N on the sled. Together, his brother and the sled have a mass of 32 kg. What is the acceleration of the sled?
Hint: Net Force = Mass x Acceleration; be sure to rearrange the equation to solve for ACCELERATION
96 m/s2
4096 m/s2
4 m/s2
0.25 m/s2
Which of the following scenarios best illustrates the law of force and acceleration?
When you give your friend a lift on the front of your bile you have to pedal harder to speed up than when you were on the bike alone.
When you hit the wall it hurts your hand.
When the bus you're riding suddenly stops, your body continues to move forward.
A basketball sits in the ball cage at the gym, and remains motionless.
A block pulled 0.70 m to the right 0.14 s. What is the Average speed?
5
0.098
.74
1.4
Which of these accurately describes the motion of the toy train?
The toy train speeds up while going forward and then slows down
The toy train slows down while going forward and the moves backwards.
The toy train moves forward at a constant speed , slows down, and then stops.
The toy train moves forward at in increasing speed, stops, and then moves forward.
A Student drew atomic models of four atomic models. Based on the drawings, which one is the least reactive?
Chlorine, because it has three energy levels with seven electrons in the third level
Gallium, because it has four energy levels with three electrons in the fourth level
Neon, because it has two energy levels with eight electrons in the second level
Tin, because it has five energy levels with four electrons in the fifth level
Four students were asked to name the parts of an atom that determine the atom’s identity and chemical properties. The students’ responses are shown in the table below.
Student 1
Student 2
Student 3
Student 4
How many valence electrons does the atom of Carbon-14, shown above have?
14
10
6
4
Based on the data, which number shows the correct location of the element that is brittle and dull.
1
2
3
4
Based on the data, which number shows the correct location of the element that is malleable and a good conductor.
1
2
3
4
How many atoms are represented in the reactants in the equation?
6
7
4
5
Four students performed four different investigations by combining different substances. Their results are shown in the table provided. In which experiment are new substances being formed?
Experiment 1
Experiment 2
Experiment 3
Experiment 4
The student inferred that a chemical reaction occurred. What evidence supports this
inference?
A dark solid formed on the zinc metal.
The zinc metal remained silver-colored and shiny.
The CuSO solution turned blue when the zinc metal was added.
None of these
Based on their observations, can the students correctly conclude that a chemical reaction occurred?
No, because the metal strip was still visible
Yes, because a new material of a different color formed on part of the metal strip
No, because the solution stayed blue
Yes, because the volume of the blue solution stayed the same
Assuming the students did not make any careless errors, what likely explains these changes in mass?
Procedure 1: All the reactants were liquids that evaporated.
Procedure 2: A gas was formed as one product, and it escaped into the air.
Procedure 1: One of the reactants was converted to thermal energy.
Procedure 2: All the products were liquids.
Procedure 1: The reactants were liquids with different densities.
Procedure 2: The reactants were combined into only one product.
Procedure 1: One of the products was a gas that escaped into the air.
Procedure 2: A gas from the air reacted with one of the other reactants.
The table lists four processes that occur during digestion:
Which of these processes is a / are chemical change(s):
I, II, and IV
Only III
I, II, and III
II and III
Which sample is most likely a nonmetal?
A
B
C
D
What is the density of the rock? (graduated cylinder increases by 5mL)
o.2 g/cm3
40 g/cm3
5.0 g/cm3
1.43 g/cm3
Which group of element is the most reactive?
Group 4
Group 1
Group 9
Group 18
An atom of which element is represented by this model?
Carbon (C)
Neon (Ne)
Sodium (Na)
Boron (B)
The atomic number of krypton is 36. If the mass number of a krypton atom is 84, which table shows the number of subatomic particles inside and outside the nucleus of the krypton atom?
How many protons, neutrons and electrons are present in an atom of hafnium, Hf, with a mass number of 178?
A model of a beryllium atom is shown in the image. What types of particles are found in the cloud surrounding the atom's nucleus?
positively charged particles and negatively charged particles
negatively charged particles only
neutral particles and positively charged particles
positively charged particles only
A wheeled cart is moving to the right at a constant speed. Two forces of equal magnitude are acting upon the cart. Which of the following best describes the forces and motion of the cart?
Balanced Forces, Constant Speed
Balanced Forces, Acceleration
Unbalanced Forces, Constant Speed
Unbalanced Forces, Acceleration
The diagrams show forces acting on a toy car as it moves to the right. Which diagram shows the toy car that will most likely accelerate to the right based on these conditions?
