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If the energy required to start a reaction is high, the reaction is

If the energy required to start a reaction is high, the reaction is. A Highly endothermic B Highly exothermic C Has a high activation energy D Has a high heat of formation. Which is required to make an “effective” collision:. A Proper orientation B Sufficient energy

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If the energy required to start a reaction is high, the reaction is

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  1. If the energy required to start a reaction is high, the reaction is A Highly endothermicB Highly exothermicC Has a high activation energyD Has a high heat of formation

  2. Which is required to make an “effective” collision: • A Proper orientation • B Sufficient energy • C Molecules to collide • D All of the above

  3. If a crystal is added to a solution and dissolves, the solution was: • A Supersaturated • B Saturated • C Unsaturated • D Monosaturated

  4. What happens to equilibrium when some product is removed from the system • A The reaction does not change • B The reaction makes more product • C The reaction makes more reactant • D Cannot be determined

  5. Forces holding particles together are weakest in a: • A Solid • B Liquid • C Gas • D All the above

  6. H2O and NaCl are the products of: • A NaNO3 + HCl • B HOH + NaNO3 • C NaOH + HCl • D HNa + ClOH

  7. When a liquid is freezing, the temperature is: • A Always zero • B Decreasing • C Increasing • D Does not change

  8. Acids • A increase the concentration of hydrogen ions • B decrease the concentration of hydrogen ions • C increase the concentration of hydroxide ions • D increase the concentration of hydroide ions

  9. Which of the following is dibasic: • A HCl • B H2SO4 • C NaOH • D Mg(OH)2

  10. A solution that has a pH of 9 has an OH- of: • A) 5 • B) 9 • C) 1x10-9 • D) 1x10-14

  11. A solution that has a pH of 9 has an H3O+ of: • A) 5 • B) 9 • C) 1x10-9 • D) 1x10-14

  12. The endpoint of an indicator is • A When the pH = 7 • B At the equivalence point • C When the color does not change when more acid is added • D In the middle of the transition interval

  13. What are the oxidation numbers in Na2O2 • A Na= +1 O= -2 • B Na= 0 O= -2 • C Na= +1 O= -1 • D Na= +2 O= -2

  14. Which of the following is not a redox reaction? • A NaOH + HCl  H2O + NaCl • B NaCl + F2 • C CO2 + H2O  H2CO3 • D None of these

  15. Increasing the volume of a container while keeping the temperature fixed will • A Increase the pressure • B Increase the number of particles • C Decrease the pressure • D Decrease the number of particles

  16. When two hydrogen nuclei combine to form a helium nucleus, that is • A Fission • B Fusion • C Radioactive decay • D Impossible

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