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Chemistry, 21.06.2019 21:00
Of the groups of elements below, which are most likely to gain electrons to become anions? a. alkali metal b. boron group c. halogen d. transition metal
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An electron moved from shell n = 2 to shell n = 1. what most likely happened during the transition? a fraction of a photon was added. a photon of energy was absorbed. a fraction of a photon was removed. a photon of energy was released.
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Air can be considered a mixture. which statement does not explain why?
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Chemistry, 22.06.2019 20:00
State one important difference between a physical change and a chemical change?
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An ion of the same element is formed by changing the number of...
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