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What is the difference between models I and II?

I. II. . What is the difference between models I and II? I includes negative particles (electrons) while II does not I says that the overall charge of an atom is neutral while II does not. I says that atoms are not made of smaller parts while II does

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What is the difference between models I and II?

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  1. I. II. What is the difference between models I and II? • I includes negative particles (electrons) while II does not • I says that the overall charge of an atom is neutral while II does not. • I says that atoms are not made of smaller parts while II does • I says that the positive charge is spread out while II says it is in the nucleus

  2. 32 35 222 -1 S Cl Rn 16 17 86 +1 39 K 19 D B A C -2 E. 17 protons, 18 neutrons, 17 electrons F. 6 protons, 8 neutrons, 6 electrons G. 8 protons, 8 neutrons, 10 electrons H. 7 protons, 7 neutrons, 10 electrons • Which of the above are ions? • Which of the above are neutral atoms? • Which of the above are the same element? • Which of the above have the same atomic mass? • Which of the above have the same charge?

  3. A neutral balloon is attracted to a mystery object. The mystery object’s charge is: • Positive • Negative • Neutral • Unknown

  4. Super Fun Mystery Object A ???? Super Fun Mystery Object A is A. Positively Charged B. Negatively Charged C. Neutral D. Cannot Be Determined Neutral electroscope

  5. Object A attracts to positively charged Object B and has no reaction with neutral Object C. What is the charge on Object A?

  6. Objects become positively charged by • Gaining a proton • Losing a proton • Gaining an electron • Losing an electron

  7. B A 9V The resistance of the LB is 18 ohms. What is the current through points A and B? • A is 9 C/s and B is 0 C/s • A is 0.5 C/s and B is 0 C/s • A and B are both 0.5 C/s • A and B are both 9 C/s

  8. +  - 1 3 2 Which light bulbs are lit?

  9. 1 A B C 2 E D F G LB1 is 12 ohms and LB2 is 36 ohms. The battery is 18 V. • How many joules does LB 1 take from each coulomb? • What is the current at point A? • What is the current at point D? • What is the current at point G?

  10. 3 a b 2 d e 1 c f LB1 takes 6 J from each coulomb and LB3 takes 8 J from each coulomb. • What is the voltage of the battery? • The current at point d is 2 coulombs per second. How many Joules does LB 2 give off each second?

  11. 1 2 3 Circuit 2 Circuit 1 3 Circuit 3 2 All three circuits have the same battery voltage and all of the light bulbs have the same resistance. Which circuit has the greatest current by the battery?

  12. 1 A 3 2 B E D C F G The battery is 9 V, the resistance of LB 2 is 6 ohms, and the current through point D is 1 coulomb per second. • What is the resistance of LB 3? • How many joules are carried by the coulombs through point A?

  13. P(m) P(m) P(m) A B D G P(m) P(m) P(m) P(m) H E C • Which of the above position-time graphs show an object with balanced forces? • Which direction (positive or negative) is the total force in graph H? F

  14. V(m/s) V(m/s) V(m/s) V(m/s) V(m/s) A F C E V(m/s) D B • Which of the above velocity-time graphs shows an object with unbalanced forces? • What is the direction of the total force in graph D? G

  15. F On sled By ground F On sled By friction (20 N) F On sled By dogs On sled F By Earth (Gravity) A sled has the FBD to the right. If the mass of the sled (including anything on it) is 50 kg and the change in velocity is -3 m/s/s, what is the force by the dogs?

  16. V(m/s) After 5 seconds, the velocity of the car is 20 m/s. What is the change in velocity every second? If the car has a mass of 15 kg, what is the total force on the car?

  17. Sticky track Old Cart An old 8 kg cart is initially at rest when pulled to the left with a force of 12 N in magnitude. Friction pulls on the cart with a force of 4 N in magnitude. What is the change in velocity for every second? What happens once the person lets go of the cart?

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