Fill in the blank: elements in the same on the periodic table have the same number of valence electrons. properties of elements within a on a periodic table change in a predictable way from one side of the table to the other. the number of in an atom determines the identity of an element.
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Chemistry, 22.06.2019 06:30, coreyslotte
Use examples from the article to explain one positive and one negative effect that chemistry has had on society.
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Chemistry, 22.06.2019 08:40, jaueuxsn
Ageologist determines that a sample of a mineral can't be scratched by a steel nail but can be scratched by a masonry drill bit. based on this information, the sample mineral has to be softer than a. orthoclase. b. fluorite. c. apatite. d. corundum.
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Which property of a rock remains unchanged by mechanical weathering? a. total surface area b. size and shape c. mineral composition d. sharpness
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Chemistry, 22.06.2019 21:30, shiannethorn
How many liters of 3.0 m naoh solution will react with 0.60 liters of 4.0 m h2so4? h2so4 + naoh → na2so4 + h2o 1.2 l 1.6 l 2.4 l 2.8 l
Answers: 3
Fill in the blank: elements in the same on the periodic table have the same number of valence elec...
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