1. How much work in Joules do you do when you carry a 20 Kg suitcase up a flight of stairs (about 4 meters)?
2. 200
3. 784
4. 196
5. 354
6. An object is falling under gravity with terminal velocity. What is happening to its speed?
7. It is decreasing to a lower value.
8. It is increasing.
9. It is decreasing to zero.
10. It is staying constant.

3-An aircraft has a landing speed of 144 m/s, and upon landing it is able to come to a stop in 4,000 m. Assuming constant deceleration, how long would it take for an aircraft to come to a full stop?

1. 114 seconds
2. 128 seconds
3. 55.55 seconds
4. 111.1 seconds
5. None of them

4-How many valence electrons are transferred from the calcium atom to iodine in the formation of the compound calcium iodide CaI₂?

1. 0
2. 1

c. 2

d. 3

5- The temperature of a 95.4g piece of copper increases from 25^oC to 48.0^oC when the copper absorbs 849J of heat. What is the specific heat of copper?

1. 0.78J/g.^oC
2. 0.87J/g.^oC
3. 0.387J/g.^oC
4. 0.420J/g.^oC

6- Lithium belongs to which chemical family?

A. alkali metals

B. alkaline earth metals

C. halogens

D. noble gases

7.The process by which solids vaporize without first becoming a liquid is called A.sublimation. B.condensation. C.evaporation. D.boiling.

8.The characteristic of a sound wave that you interpret as volume is related to A.frequency. B.wavelength. C.amplitude. D.velocity.

9- During a track and field meet, the time difference between seeing the smoke from a starter's gun and hearing the "bang" would be less A.on a warmer day. B.on a cooler day. C.if a more powerful shell is used. D.if a less powerful shell is used.

10- With regard to Oxygen, Flourine, and Neon, which of the following statements is correct?

(a) All three species contain 10 electrons.

(b)The sum of the neutrons in all three species is 27.

(c) The sum of the protons in all three species is 28.

(d) Both 19F- and 20Ne contain 20 neutrons.

(e) None of the above

1. 2, 12, 8, 12
2. 2, 13, 8, 8
3. 2, 13, 1, 14
4. 2, 13, 8, 10

12- Calculate the power when a force of 60N moves an object over a distance of 0.6 Km in 20 minutes

A. 100watts

B. 6,000 watts

C. 0.25watts

D. 30 watts

13- Which of the followings correspond to the configuration of Argon.

1. 1s²2s²2p⁶3s²
2. 1s²2s²2p⁶3s²3p⁶ 4s² 3d⁵
3. 1s²2s²2p⁴
4. 1s²2s²2p⁶3s²3p⁶

14-The frequency of a vibration is measured in units of A.length. B.time for one vibration. C.cycles. D.cycles per second.

15- . In a solution, the solvent is

a) The substance being dissolved.

b) Always a liquid.

c) The substance present in the greatest amount.

d) Always water.

16-Water waves are observed to move under a bridge at a rate of one complete wave every 4.0 s. What is the frequency of these waves? A.l/4s B. Hz C.4 Hz D.0.50 Hz

17- Which salt is made when sodium hydroxide reacts with hydrochloric acid?

1. Sodium chloride
2. Sodium sulfate
3. Sodium nitrate

18-. A solution of a base differs from a solution of an acid in that the solution of a base

1. is able to conduct electricity
2. is able to cause an indicator color change
3. has a greater [H₃O⁺]
4. has a greater [OH^-]

19- Which of the following are the correct products from the reaction between magnesium hydroxide and sulfuric acid?

1. Magnesium sulfate + water
2. Magnesium sulfate + water + carbon dioxide
3. Magnesium sulfate + hydrogen

20- Two wave pulses with different positive amplitudes travel on a cord approaching each other. What is the result of the oscillations when the pulses reach the same point?

A. It is constructive interference with twice the amplitude

B. It is destructive interference with zero amplitude

C. It is constructive interference with slightly greater amplitude

D. It is constructive interference with the negative amplitude

E. The standing wave is produced

Part B (60 points) Note: For the questions 2, and 3 include the mathematical calculations (only the final number as an answer will not be considered)

1. Which pair of elements are likely to form ionic compounds? Explain your choice and write the formulas for the compounds that will form.
2. Cl, Br
3. Ca, Cl
4. K, He

1. What is the kinetic energy in (N.m) and Joules of a 4Kg bowling ball rolling down a bowling lane at 10 m/s? compare this energy with that of a 250g baseball traveling 50 m/s. which object would hurt more if it hit you (i.e., which object has the greater kinetic energy)?

3- You drive a pickup truck along a straight road for 8.4 km at 70 km/h, at which point the truck runs out of gasoline and stops. Over the next 30 min, you walk another 2.0 km farther along the road to a gasoline station.

1. What is your overall displacement from the beginning of your drive to your arrival at the station?

1. What is the time interval ?t from the beginning of your drive to your arrival at the station?

(c) What is your average velocity from the beginning of your drive to your arrival at the station?

a chemical equation for the dissociation of each of the following acids and bases in water, also identify the conjugate acid (CA) and conjugate base (CB)

1. Nitric acid

1. Ammonia

1. Write the electron configuration for the Zinc atom,

1. Classify the following reactions
2. Ca(OH)₂ + 2 NaCl 2 NaOH + CaCl₂
3. NH4NO3 NO2 + 2 H2O
4. Mg +H2SO4 MgSO4 + H2

1. What is the difference between adhesion and cohesion

1. Objects in free fall have equal acceleration? Explain.

1. What are the mechanisms for heat transfer. Explain with examples.

VIII A Number of Electrons 2 He Element in Main Energy Level 4.003 Helium 10 1ST 2ND 3RD 4TH 5TH 6TH 7TH Ne 20.183 Helium (He) 2 Exception Neon 18 Neon (Ne) 2 8 Ar 39.948 Argon Argon (Ar) 2 8 36 Krypton (Kr) 2 8 18 Kr 83.80 Krypton Xenon (Xe) 2 8 18 18 8 54 Radon (Rn) 2 8 18 32 18 8 Xe 131.30 Xonon 86 Rn (222) Radon