Quiz 1 Ver2answers - 1) a) b) c) d) QUIZ 1 Version 2 A...

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1) A controlled experiment is one that a) proceeds slowly enough that a scientist can make careful records of results b) may include experimental groups and control groups treated in parallel c) is repeated many times to make sure the results are accurate d) keeps all environmental variables constant 2) The Magnesium ion (Mg +2 ) has the following number of electrons and protons ( Atomic number of Magnesium =12 , mass number = 24) a) 12 and 12 b) 12 and 24 c) 10 and 12 d) 12 and 10 3) The molecular weight of compound A is 100 g. To make 1 L of a 2M solution , you would a) Weigh 100g of A and add 1 L of water b) Weigh 200g of A and add 1 L of water c) Weigh 100g of A and add enough water to make upto 1 L d) Weigh 200 g and add enough water to make upto 1 L 4) Which of the following solutions has a greater [OH - ] concentration? a) lemon juice at pH 2 b) tomato juice pH 4 c) grapefruit juice pH 3 d) coffee at pH 5 5) The two compounds are related to each other by being _____. a)
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Quiz 1 Ver2answers - 1) a) b) c) d) QUIZ 1 Version 2 A...

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