What is the correct amount of valence electrons for Sulfur?

1. What is the correct amount of valence electrons for Sulfur? • 2 • 6 • -2 • -6 30

2. What is the correct Bohr model of the element Flourine? • A • B • C • D 30

3. Why don’t the noble gasses react with other elements? • They have bad body odor • They are stuck up • They’re too lazy • Their valence is full therefore the atom is stable and doesn’t need to bond with other atoms. 30

4. Which of the following elements will form a covalent bond? • LiCl • MgO • H2O • K2O 30

5. Humans have always desired to turn lead into gold. In order to do this you must….. • Add 3 protons • Subtract 3 protons • Change the number of electrons • Subtract 10 neutrons • Add 3 Neutrons and subtract 10 neutrons • Subtract 3 protons and 10 neutrons 30

6. Boron is listed on the P.T. as having a mass of 10.81. This so even though the mass is always a whole number is because the listed P.T. mass is the average of….. • the proton masses. • The isotopes masses. • The neutron masses • The electrons masses 30

7. As you have observed Potassium (K) is very unstable so why is it very stable when it bonds with Bromine (Br) ? • Bonding lowers blood pressure • The neutrons are able to balance the electrons • The protons become neutral • Bonding gives the element a full valence electron shell 30

8. Why would LiF dissolve in water but Iron (Fe) would not? • LiF is ionic while Fe is metallic • LiF is covalent and Fe is metallic • LiF is polar while Fe is covalent • Fe is just too hard for water 30

9. H2O2yeilds H2 + O2 is a balanced equation. How does it show the conservation of mass? • Number of atoms is same on both sides • Kinds of atoms are the same on both sides • It just does • The number and kinds of atoms before the reaction is the same as after the reaction 30

10. How many elements are in the organic compound glucose ( C6H12O6 ) • 24 • 3 • 6 • 12 30

11. How many atoms are in the organic compound glucose ( C6H12O6 ). • 24 • 3 • 6 • 12 30

12. After a while the my pendulum will stop moving. What is the best explanation? • KE is transferred to the air and the ball and transformed to thermal NRG • KE is transferred to vibrations in the wire and the ball and transformed to thermal NRG • KE is transferred to vibrations in the wire and the air and transformed to thermal NRG 30

13. The graph below represents the NRG in a dropped ball. Why are all the columns the same height? • It gains energy • It loses energy • KE + PE = 100% • Total NRG remains constant 30

14. Which of the answers below best represents the graph? • A rocket leaving Earth • A meteorite falling to Earth • An arrow shot from the Earth • Superman leaping tall buildings 30

15. An arrow traveling at 30 m/s will penetrate pine 10 cm. If the speed is doubled to 60m/s how far into the pine will the arrow go? • 20 cm • 30 cm • 40 cm • 50 cm 30

16. What happens to the nrg the sun gives off in the form of EM waves that is absorbed by whatever it hits • EM nrg transforms to Thermal nrg • It is destroyed • It just goes right through • It gets wiggly 30

17. How does “rolling with a punch” which increases the time of the punch, affect the force with which you are hit? • The force is with you • Force stays the same • Force increases as time increases • Force decreases as time increases 30

18. The fiction part of a sci-fi movie when you see and hear spaceships blowing up, is that sound can’t happen in space. Why? • Sound frequencies are too small! • Sound need gravity to work! • Sound needs air particles to vibrate! • Matter can’t vibrate in space cuz it’s too cold! 30

19. What kind of nrg is emitted when lights glow? • Electromagnetic • Thermal • Elastic • Chemical 30

20. Which element is the most likely to be found near the Earth’s crust? • Silicon • Iron • Nickel • Aluminum 30

21. Truckers get a tan on the arm that hangs out the window but even though sunlight comes in through the windshield they don’t get a tan on their face. Why is that? • They wear a hat • The windshield has a special coating • All truckers have strong beards • Glass reflects and absorbs nrg so only the exposed arm receives EM nrg. 30

22. At divergent plates where the seafloor spreads, magma rises and cools creating a ridge on either side of the plate boundaries and forms new rock. As you move away from the center of the ridge the age of the rock…. • Decreases • Increases • Stays the same • Forms magnetic bands 30

23. Identify the force that forms stars and describe how the stars are formed • Gravity is force and it pulls everything together • Pressure is the force • Gravity pulls matter which has inertia and causes it to spin, heat up, pressurize, and then ignite into a star. Since it pulls from all directions stars and planets are spherical. 30

24. Rank the 4 events in order for an Earthquake nrg chainStress on rock (EPE),Plate movement(KE)Stress release (sound and KE)Radioactive decay (HE) • EPE, KE, sound & KE, HE • EPE, HE, KE & sound, KE • HE, EPE, KE, KE & sound, • HE, KE, EPE, KE & sound 30

25. Where is the most likely place for a volcano on a convergent subduction zone ? • A • B • C • D 30

26. Where is the most likely place for a mid-oceanic ridge where new rock is formed? • A • B • C • D 30

27. 30 Where is the most likely place for huge mountain formation at a convergent boundary? • A • B • C • D

28. Where is the most likely place for Earthquakes to happen at a transform fault boundary? • A • B • C • D 30