Environmental Science > A-Level Question Paper > Environment The Science Behind the Stories (All)

Environment The Science Behind the Stories

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Use the accompanying figure to answer the following questions. 1) Within each water molecule, ... A) isotopes B) magnetic force C) covalent bonds D) ionic bonds E) hydrogen bonds Answer: C connect(s) two hydrogens to every oxygen. 1) 2) Why are both ends of each water molecule positive and the middle negative? 2) A) Protons are more attracted to oxygen than they are to hydrogen. B) Protons are more attracted to hydrogen than they are to oxygen. C) Electrons are more attracted to hydrogen than they are to oxygen. D) Electrons are more attracted to oxygen than they are to hydrogen. E) Hydrogen bonds create a charge difference. Answer: D If you need a professional to complete your college homework at a small fee, then reach out to amazingclasshelp.com 1 2 3) Hydrogen bonds give water which of the following properties? 3) A) the ability to resist temperature changes B) the ability to dissolve lipids C) low pH D) the ability to freeze into ice, which is denser than liquid water E) high pH Answer: A 4) A hydrogen bond connects . 4) A) a hydrogen atom to another hydrogen atom B) a hydrogen atom to an oxygen atom within a water molecule C) a positive region of one water molecule to a negative region of another water molecule D) the nuclei of adjacent water molecules E) an oxygen atom in one water molecule to an oxygen atom in another water molecule Answer: C MATCHING. Choose the item in column 2 that best matches each item in column 1. Match the following. 5) The smallest components of elements that still maintain the chemical properties of the elements Answer: D 6) Negatively charged particles Answer: B 7) Elements with the same atomic number but different atomic masses Answer: A 8) Atoms or molecules with a charge Answer: C 9) Uncharged particles that contribute to an atom's mass number Answer: E 10) Combinations of elements held together with bonds Answer: F A) isotopes B) electrons C) ions D) atoms E) neutrons F) molecules G) protons 5) 6) 7) 8) 9) 10) [Show More]

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