What is the energy required to remove the outermost electron from an atom called?
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Question 2 of 33
What color does phenolphthalein turn in the presence of an acid?
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Question 3 of 33
If fifty-six kilograms of a radioactive substance has a half-life of 12 days, how many days will it take the substance to decay naturally to only 7 kilograms?
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Question 4 of 33
Which compound contains a polar covalent bond?
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Question 5 of 33
What type of chemical reaction is represented by AB → A + B?
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