2.1 - Question 1 Multiple Choice 0 of 1 points A certain...

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Question 1 Multiple Choice 0 of 1 points A certain mass of carbon reacts with 13.6 g of oxygen to form carbon monoxide. __________ grams of oxygen would react with that same mass of carbon to form carbon dioxide, according to the law of multiple proportions? Selected Answer: 13.6 Correct Answer: 27.2
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Question 2 Multiple Choice 1 of 1 points Methane and ethane are both made up of carbon and hydrogen. In methane, there are 12.0 g of carbon for every 4.00 g of hydrogen, a ratio of 3:1 by mass. In ethane, there are 24.0 g of carbon for every 6.00 g of hydrogen, a ratio of 4:1 by mass. This is a statement of the law of __________. Selected Answer: multiple proportions Correct Answer: multiple proportions Question 3 Multiple Choice 1 of 1 points Which statement below correctly describes the responses of alpha, beta, and gamma radiation to an electric field? Selected Answer: Alpha and beta are deflected in op while gamma shows no response. Correct Answer: Alpha and beta are deflected in op while gamma shows no response. Question 4 Multiple Choice 1 of 1 points __________ and __________ reside in the atomic nucleus. Selected Answer: Protons, neutrons Correct Answer: Protons, neutrons Question 5 Multiple Choice 1 of 1 points 200 pm is the same as __________ Å. Selected Answer: 2 Correct Answer: 2
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Question 6 Multiple Choice 1 of 1 points The atomic number indicates __________. Selected Answer: the number of protons or electrons Correct Answer: the number of protons or electrons Question 7 Multiple Choice 1 of 1 points Which pair of atoms constitutes a pair of isotopes of the same element? Selected Answer: Correct Answer: Question 8 Multiple Choice 1 of 1 points The nucleus of an atom contains __________. Selected Answer: protons and neutrons Correct Answer: protons and neutrons Question 9 Multiple Choice 1 of 1 points In the periodic table, the rows are called __________ and the columns are called __________. Selected Answer: periods, groups Correct Answer: periods, groups Question 10 Multiple Choice 1 of 1 points Which group in the periodic table contains only nonmetals?
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Multiple Choice 1 of 1 points Selected Answer: 8A Correct Answer: 8A Question 11 Multiple Choice 0 of 1 points The element __________ is the most similar to strontium in chemical and physical properties. Selected Answer: Rb Correct Answer: Ba Question 12 Multiple Choice 0 of 1 points Horizontal rows of the periodic table are known as __________. Selected Answer: groups Correct Answer: periods Question 13 Multiple Choice 0 of 1 points Vertical columns of the periodic table are known as __________. Selected Answer: periods Correct Answer: groups Question 14 Multiple Choice 1 of 1 points Elements in Group 1A are known as the __________. Selected Answer:
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2.1 - Question 1 Multiple Choice 0 of 1 points A certain...

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