Quiz about 23-24 First Semester Review

Question 1

This diagram shows a balloon that is moving in one direction, while escaping air is moving in the opposite direction.

What causes the balloon to move?

Accepted Answer

D Action-reaction forces

Answer

A Electrical forces

Answer

B Forces of friction

Answer

C Gravitational potential energy

Question 2

Trinitrotoluene is a chemical compound used as an explosive. The chemical formula for this compound is C₇ H ₅N₃ O₆. How many total atoms are present in this compound?

Accepted Answer

B. 21

Answer

A. 4

Answer

C. 63

Answer

D. 63

Question 3

Calculate the amount of force that would have to be applied to a 5 kg object to make it accelerate 25 m/s ²?

Accepted Answer

C. 125 N

Answer

A. 25 N

Answer

B. 5 N

Answer

D. 12.5 N

Question 4

The chemical formula for ethanol is shown below .

C₂H₆O

What does the chemical formula tell us about ethanol?

Accepted Answer

D. It has nine atoms

Answer

A. It has three atoms.

Answer

B. It has eight atoms.

Answer

C. It has twelve atoms

Question 5

Which of the following pairs of elements contains the greatest number of electrons?

Accepted Answer

C. Copper and Sulfur

Answer

A. Hydrogen and Oxygen

Answer

B. Sodium and Chlorine

Answer

D. Neon and Boron

Question 6

How many atoms of chlorine are in the compound Al₂Cl₉ K₃ ?

Accepted Answer

B. 9

Answer

A. 2

Answer

C. 3

Answer

D. 0

Question 7

Which of the following shows unbalanced forces acting on each other?

Accepted Answer

Option A: A book resting on a table

Answer

Option B: A car moving at a constant speed

Question 8

How many electrons does Nitrogen have?

Accepted Answer

C. 7

Answer

A. 10

Answer

B. 12

Answer

D. 11

Question 9

Which three elements have the most similar chemical properties?

Accepted Answer

B.) Ne, Ar, Kr

Answer

A). K, Rb, Sr

Answer

C.) O, N, P

Answer

D.) B, C, N

Question 10

What will the acceleration of the ball be once it has been kicked?

Accepted Answer

A . 10 m/s²

Answer

B. 55 m/s²

Answer

C. 100 m/s ²

Answer

D. 250 m/s ²

Question 11

The graph below shows distance over time of a car that made three separate trips. Which point on the graph shows the car in a constant position?

Accepted Answer

A.

Answer

B

Answer

C

Question 12

Two clear solutions, X and Y, were combined in a beaker. After a while, the solution turned blue and a solid substance started to settle at the bottom. What can be inferred from this observation?

Accepted Answer

C. The change in color and formation of a solid substance from two solutions is evidence that a chemical change occurred.

Answer

A. The change of solution X from clear to blue is evidence that a physical change occurred.

Answer

B. The formation of a solid substance from solution Y is evidence that a physical change occurred.

Answer

D. The mixing of two solutions in a beaker is evidence that a chemical change occurred.

Question 13

When bananas ripen, the green color fades and the yellow color becomes visible. This change in color is due to -

Accepted Answer

B. the breakdown of chlorophyll

Answer

A. the formation of a new pigment

Answer

C. the exposure to sunlight

Answer

D. the change in temperature

Question 14

Consider a car accelerating from rest. According to Newton's laws of motion, which law explains the car's acceleration?

Accepted Answer

B. Newton's Second Law

Answer

A. Newton's First Law

Answer

C. Newton's Third Law

Answer

D. none of the above

Question 15

What determines the group of an element in the periodic table?

Accepted Answer

A. Number of electrons in the outermost shell

Answer

B. Atomic weight

Answer

C. Number of neutrons

Answer

D. Atomic radius

Question 16

What is the chemical formula for the compound known as Methane?

Accepted Answer

D. CH4

Answer

A. CO2

Answer

B. NH3

Answer

C. H2O

Question 17

Which of the following atoms has 7 valence electrons?

Accepted Answer

B. Cl

Answer

A. C

Answer

C. Au

Answer

D. Mn

Question 18

The model of periodic table below shows the locations of four elements. A student is asked to identify the element in the fifth period that is most reactive. At which location in this periodic table would the element most likely be found?

Accepted Answer

B. 2

Answer

A. 1

Answer

C. 3

Answer

D. 4

Question 19

Which statement concerning Fluorine and Chlorine is correct?

Accepted Answer

A. Fluorine and Chlorine differ in the number of protons, but have the same number of valence electrons.

Answer

B. Fluorine and Chlorine have the same number of valence electrons and energy levels

Answer

C. Fluorine and Chlorine are in the same group and period on the periodic table of elements.

Answer

D. Fluorine has fewer valence electrons than Chlorine.

Question 20

A chemist wants to experiment with an element that reacts like sodium (Na), but has a greater atomic mass. Which element should the researcher select for the experiment?

Accepted Answer

A. Potassium (K)

Answer

B. Sulfur (S)

Answer

C. Arsenic (As)

Answer

D. Calcium (Ca)

Question 21

A car's movement is the result of various forces acting upon it. Two of the most important are thrust and friction. Thrust is a forward force generated by the car's engine that tends to move the car forward. Friction is a force that results from interactions such as the tires meeting the road. Friction tends to resist the forward force from the engine.

What amount of force is necessary for a car with a mass of 150.0 kg to move forward with an acceleration of 25.0 m/s ?

Accepted Answer

B. 3750

Answer

A. 150

Answer

C. 3570

Answer

D. 25

Question 22

A car travels at a increasing speed from 0m/s-20 m/s for 3 minutes. The car travels at constant speed of 20 m/s for the next minute and then the car increases its speed from 20 to 30 for 4 more minutes. Which of the following graphs best represents the car's motion during the 7 minute period?

Accepted Answer

Option A is correct

Answer

B.

Answer

C.

Answer

D.

Question 23

If a man is pulling a wagon up a hill, describe what is occurring in terms of energy.

Accepted Answer

Increasing Potential energy, Decreasing Kinetic energy

Answer

Decreasing Potential energy, Increasing Kinetic energy

Answer

Both potential and kinetic are increasing

Answer

Both potential and kinetic are decreasing

Question 24

Look at the picture of a ball rolling down a hill into a valley, then rolling up another hill on the other side.  Which letter represents the ball with the MOST kinetic energy?

Accepted Answer

D

Answer

G

Answer

A

Answer

B

Question 25

A roller coasters accelerates from an initial speed of 6.0 m/s to a final speed of 70 m/s over 4 seconds. What's the acceleration?

Accepted Answer

16 m/s2

Answer

24 m/s2

Answer

18 m/s2

Answer

16 m/s

Question 26

Be careful!!!!! This is a speed-time graph

What does this line represent?

Accepted Answer

constant speed

Answer

not moving

Answer

speed increasing

Answer

speed increasing at a constant rate

Question 27

What is happening at D?

Accepted Answer

Fast steady speed; moving away from the starting position

Answer

Stationary

Answer

Negative Acceleration

Answer

Slower steady speed; moving away from the starting position

Question 28

A toy car moved along a 1.2 km track in 6 min. Find the speed of the toy car.

Accepted Answer

12 km/h

Answer

0.2 km/h

Answer

1.2 m/min

Answer

200 m/h

Question 29

Match the graph to the description:

"The car is slowing down."

Accepted Answer

Option B is correct

Answer

A.

Answer

C.

Answer

D.

Question 30

What phase comes AFTER this one?

Accepted Answer

Waxing Gibbous

Answer

Waxing Crescent

Answer

Waning Gibbous

Answer

Third Quarter

Question 31

The complete cycle of the moon lasts about a _.

Accepted Answer

month

Answer

day

Answer

year

Answer

week

Question 32

Which quadrant has the hottest, dimmest stars?

Accepted Answer

Quadrant 3

Answer

Quadrant 1

Answer

Quadrant 2

Answer

Quadrant 4

Question 33

What is the name of the stars located in quadrant 2?

Accepted Answer

Red Giants

Answer

Main Sequence

Answer

White Dwarfs

Answer

Blue Giants

Question 34

What section is considered the main sequence?

Accepted Answer

Area P

Answer

Area M

Answer

Area X

Answer

Area Z

Question 35

Where would blue giants be found?

Accepted Answer

Quadrant 1

Answer

Quadrant 2

Answer

Quadrant 3

Answer

Quadrant 4

Question 36

In the diagram given, what happens as we move to the left?

Accepted Answer

Stars get hotter

Answer

Stars Get Larger

Answer

Stars get Colder

Question 37

What causes the phase of the Moon to change each night?

Accepted Answer

The alignment between the Earth, Moon, and Sun determines the amount of light reflected by the Moon.

Answer

The Moon changes its acutal shape throughout the course of the month.

Answer

The season of the year determines the phase of the Moon.

Answer

The closer the Moon is to Earth, the more light the Moon reflects.

Question 38

Name the moon phase

Accepted Answer

waxing gibbous

Answer

waning crescent

Answer

waxing crescent

Answer

waning gibbous

Question 39

Name the moon phase

Accepted Answer

waning crescent

Answer

waxing crescent

Answer

waning gibbous

Answer

waxing gibbous

23-24 First Semester Review

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