1) How do you find the number of neutrons in an atom? a) It is the same as the number of electrons b) It is the number of protons-the number of electrons c) It is the mass number-the number of protons d) It is the number of protons- the mass number 2) What is the change of state from a liquid to a solid? a) Freezing b) Melting c) Evaporation d) Condensation 3) How are the particles moving in a solid? a) They aren’t moving b) They are sliding over each other c) They are moving quickly and randomly d) They vibrate around a fixed point 4) What is the change of state from a solid to a gas? a) Evaporation b) Sublimation c) Condensation d) Deposition 5) In which state of matter do particles have the most energy? a) Solids b) Gases c) liquids 6) This picture represents particles in which state of matter? a) Liquids b) Solids c) Gases 7) Which of the following pictures represents the particles in gases? a) b) c) d) 8) Whose atomic model was a solid indivisible sphere? a) Thomson b) Dalton c) Bohr d) Rutherford 9) Which atomic particle did JJ Thomson describe in his model of the atom? a) Proton b) Electron c) Neutron d) Shells 10) The gold leaf experiment identified that atoms… a) Are solid spheres b) Have orbital shells c) Have a dense positive nucleus d) Have neutrons and protons 11) In Rutherford’s gold leaf experiment most alpha particles traveled straight through because…  a) Most of the atom is empty space b) The charge of the alpha particles is less than the protons c) Electrons move out of their way d) The nucleus is large 12) What is an ion? a) An atom that has gained or lost electrons b) Atoms of the same element with different masses c) A metal d) Non-metallic elements 13) What is an isotope? a) Atoms with the same number of protons but different numbers of electrons b) Atoms with the same numbers of neutrons but different numbers of protons c) atoms with the same number of protons but different numbers of neutrons d) Atoms with the same numbers of protons and neutrons 14) What is the charge of a neutron? a) -1 b) 1 c) +1 d) 0 15) What is the mass of an electron? a) 1 b) 0.5 c) 0.0005 d) 0 16) What is the charge of a proton? a) +1 b) -1 c) 0 d) +2 17) What is the mass of a proton? a) -1 b) 0 c) 1 d) 2 18) Which of the following is NOT true of a chemical change? a) An energy change occurs b) It is easily reversible c) New products are made 19) Which of these is NOT a limitation of the particle model? a) It does not show the forces between the particles b) It shows the arrangement of the particles c) It doesn’t show the relative sizes of the particles d) It doesn’t take into account the distance between the particles 20) What is the name of the forces that are broken, weakened or strengthened during changes of state? a) Transitional forces b) Destructive forces c) Covalent bonds d) Intermolecular forces

OCR C1 Revision

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