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Chapter 2 Review

Chemistry. Chapter 2 Review. A type of change involving the nucleus of an atom . A. Physical change B. Chemical Change C. Nuclear Change D. A base. Digestion of starch in the mouth is a _________ _______. A. Physical change B. Chemical Change C. Nuclear Change D. A base.

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Chapter 2 Review

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  1. Chemistry Chapter 2 Review

  2. A type of change involving the nucleus of an atom A. Physical change B. Chemical Change C. Nuclear Change D. A base

  3. Digestion of starch in the mouth is a _________ _______ A. Physical change B. Chemical Change C. Nuclear Change D. A base

  4. A substance that has more OH- ions than H+ ions is a(an) • Acid • Base • Ion • Solute

  5. Anything that occupies space and has mass • Weight • Matter • Cell • Physical Change

  6. Where are protons and neutrons located? • Nucleus • Electron cloud • Energy levels • Neutrons

  7. The atomic number of Oxygen is 8, which is also the number of • Protons • Neutrons • Electrons • Both A & B • Both A & C • Both B &C

  8. Tearing a piece of paper is an example of ________? A. Physical change B. Chemical Change C. Nuclear Change D. A base

  9. One Carbon atom has 6 neutrons and another carbon atom has 8 neutrons. The two atoms are • Compounds • Isomers • Isotopes • ions

  10. In covalent bonds, electrons are ……. • Gained • Lost • Shared • transferred

  11. The number of atoms in 15 H2O is • 15 • 30 • 45 • 60

  12. The number of molecules in 15 H2O is • 15 • 30 • 45 • 60

  13. The energy required to start a chemical reaction is called • Activation energy • Potential energy • Kinetic energy • Inherent energy

  14. Which of the following structures represents a diatomic molecule • NaCl • H-O • H- C=C-H • O=O

  15. A substance dissolved in other substances is known as a • Compounds • Liquid • Solute • Solvent

  16. When a carnation is put in red colored water, the petals turn red because of • Adhesion • Cohension • Thermal energy • Capillarity

  17. A solution with a pH 8 is ____ times weaker than a pH 12 • 100 • 1,000 • 10,000 • 100,000

  18. The Loss of Electrons is called (hint LEO) • Reduction • Oxygen • Orange • Oxidation

  19. Which of the following is a balanced equation • C5H12 + O2 --->3 CO2 +2 H2O • Zn + HCl ---> 2ZnCl2 + H2 • FeCl3 + NH4OH ---> Fe(OH)3 + NH4Cl • CH4 + 2 O2 ---> CO2+ 2H2O

  20. A pizza, made of crust, sauce,sausage, and cheese(not baked), is an example of • An atom • A compound • A molecule • A mixture

  21. A paperclip floating on water is due to what? • Gravity • Surface tension • Capillarity • Thermal energy

  22. An atom is stable when… • Protons = Electrons • Its inner energy level is full • Its outer energy level is full • Protons > Electrons

  23. Electrons, protons, and neutrons are respectively located ___ in relation to the nucleus • Inside, outside, inside • All in the nucleus • Outside, inside, outside • Outside, inside, inside

  24. What mostly comprises the mass of an atom? • Protons • Neutrons • Electrons • A and B • All of the above

  25. Which of the following are/is an example(s) of a diatomic molecule? • H2 • CO • F2 • A, B, and C • A and C

  26. If I make a salt water solution, identify the solvent and solute respectively. • Salt, water • Salt, salt water • Water, salt • Salt water, salt

  27. Which of the following is a correct molecular formula? • H-O-H • 3CH4 • methane H H C H H

  28. Which of the following is an incorrect molecular formula? • CO2 • LiF • Be3N2 • Na2Cl

  29. A noble gas readily bonds with other atoms. • True • False

  30. Which of the following is not a chemical change? • Melting ice • Burning wood • Rusting iron • The Statue of Liberty turning green

  31. Where are hydrogen bonds found? • Cohesion • Adhesion • Capillarity • All of the above

  32. If the atomic # is changed, what is altered? A. The charge B. The element C. The mass

  33. If you change the number of electrons, then what is altered? • The charge • The element • The mass

  34. C12 and C14 are called isotopes because the number of ________is different in the atoms. • Electrons • Protons • Neutrons • Atoms

  35. Endergonic reactions release energy? • True • False

  36. What kind of bonds hold water molecules together? • Ionic bonds • hydrogen bonds • endergonic bonds • cement bonds

  37. What kind of bonds have an unequal sharing of electrons? • Hydrogen • Ionic • Covalent • Polar Covalent

  38. Which of the following numbers would indicate a strong acid? • 13 • 8 • 6 • 2

  39. Which are the reactants in the equation below? 2 H+ + CO32− H2O + CO2 • 2H, H2O • 2H, CO2 • 2H, CO3 • H2O, CO2

  40. Which of the following is NOT a way to make an atom stable? • Share electrons • Give electrons away • Receive electrons • Add neutrons

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