1) The space surrounding the nucleus of an atom contains a) protons b) electrons c) neutrons 2) The nucleus of an atom contains a) Protons and neutrons b) Neutrons and electrons c) Protons, neutrons and electrons 3) Protons, neutrons and electrons can be defined as a) molecules b) atoms c) subatomic particles 4) Protons have a _____________ charge and are represented using this symbol a) negative, e- b) positive, p+ c) neutral, no 5) Electrons have a _____________ charge and are represented using this symbol a) negative, e- b) positive, p+ c) neutral, no 6) Neutrons have _____________ charge and are represented using this symbol a) negative, e- b) positive, p+ c) no charge, no 7) What is the chemical symbol for Strontium a) S b) Sr c) Si 8) What is the atomic number of copper a) 17 b) 24 c) 29 9) Identify the element: Cs a) Cesium b) Calcium c) Chlorine 10) What is the atomic mass of Bismuth a) 225 b) 207.98 c) 209 11) The atomic number indicates the total number of which subatomic particle/particles ? a) Protons b) Electrons c) All of the above 12) If an atom contains 15 protons, it must contain 15 _________ a) Protons b) Electrons c) Neutrons 13) Which equation is used to determine the total atomic mass of an element ? a) (P+) + (E-) b) (E-) + (N⁰) c) (P+) + (N⁰) 14) Which of the following is considered a noble gas? a) Radon b) Magnesium c) Boron 15) Which of the following is considered a metal? a) Hydrogen b) Silicon c) Cesium 16) Which of the following is considered a non metal? a) Barium b) Iodine c) Strontium 17) Complete the orbital diagram for Aluminium a) Correct b) Incorrect 18) Complete the orbital diagram for Helium a) Correct b) Incorrect 19) Complete the lewis dot structure for Arsenic a) Correct b) Incorrect 20) Complete the lewis dot structure for Lithium a) Correct b) Incorrect 21) Orbital diagrams include the __________ of the atom and its energy shells a) Neutron b) Nucleus c) Proton 22) Lewis dot structures include the chemical symbol of an element and its a) Energy levels b) Electrons c) Valence electrons 23) The first energy level has a max capacity of how many electrons a) 2 b) 8 c) 16 24) An atom with a full valence shell (2 or 8 VE) successfully completes which of the following a) Hydrogen bond b) Octet rule c) Laws of motion 25) An atom with a full valence shell is considered to be a) Stable b) Reactive c) None of the above 26) Using the given molecule, identify the bond and show your work. CHCl₃ a) Covalent  b) Ionic 27) Using the given molecule, identify the bond and show your work. NaCl a) Covalent b) Ionic 28) Identify the property of water: The top of the lake is frozen during the winter months a) Water is polar b) Water is less dense in solid form c) Water is cohesive 29) Identify the property of water:  A water molecule has a slightly positive region and slightly negative region a) Water is polar b) Water is a universal solvent c) Water has a high specific heat 30) Identify the property of water: Humans sweat on a 95 degree day a) Water has a high specific heat b) Capillary action c) Water has a high heat of vaporization 31) Identify the property of water: Richard is making pasta and notices that the pot heated up before the water started to boil a) Water is has a high heat of vaporization b) Water has a high specific heat c) Water is adhesive 32) Identify the property of water: After a storm, water droplets stick to leaves a) Adhesion b) Cohesion c) Capillary action 33) Identify the property of water: Plants use a root system to get water from the ground. The water moves through the xylem of the plant and provides water to all parts of the plant a) Adhesion b) Cohesion c) Capillary action 34) Identify the property of water: Water dissolves more substances than any other liquid a) Water is polar b) Water is a universal solvent c) Water is less dense in solid form 35) Identify the property of water: Frank fills a glass of water and notices that it almost overflowed. He can see that a bubble of water has formed at the top of the cup. If he adds more water then the cup will overflow. a) Adhesion b) Cohesion c) Capillary action 36) pH is a measurement of how ____________ or how _____________ a solution is a) Acidic, Alkaline b) Neutral, Basic c) Alkaline, Basic 37) Halfway between 0 and 14 is 7, which is _______________. a) Acidic b) Basic c) Neutral 38) Compounds are acidic if they have a pH _______________ than 7. a) Higher  b) Lower  c) At 39) Compounds with a pH ______________ than 7 are said to be basic or alkaline. a) Higher b) Lower c) At 40) Blood has a pH of 8.0. According to the pH scale, blood is a) Acidic b) Basic c) Neutral 41) Stomach acid has a pH of 1.0. According to the pH scale, stomach acid is a) Acidic b) Basic c) Neutral 42) Tap water has a pH of 7.0. According to the pH scale, tap water is a) Acidic  b) Basic c) Neutral

Unit 2 Review

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