Chemistry, 29.06.2019 04:30 ashley2816
Why are the elements placed in specific places on the periodic table? 2. periods are rows that run from left to right . 3. elements in the same period have the same number of orbitals. 4. every element in the first period has 1 shell for its electrons. every element in the second period has 2 for its electrons. see the pattern? 5. groups are columns that run from top to bottom. 6. the elements of a group have the same number of valence electrons in their outer shell. 7. every element in group one has 1 electron in its outer shell. every element in group two has 2 electrons in its outer shell. 8. hydrogen is special because it can act like two groups, 1 and 7 . 9. hydrogen sometimes is missing an electron and sometimes it has an extra electron. 10.although helium has only electrons in its outer shell, it is grouped with elements that have
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Chemistry, 22.06.2019 04:00, miamassimino
The rules of engagement (roe) working group is often used to (select all that apply.)
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Chemistry, 22.06.2019 22:20, trockout4868
How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.
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Chemistry, 22.06.2019 23:00, aly02
Need asap question 1 minerals are organic compounds. true false question 2 what vitamin can be found in foods like oranges, grapefruits, and broccoli? a. vitamin a b. vitamin k c. vitamin c d. vitamin d question 3 what are minerals? a. chemical elements that are needed for body processes. b. organic compounds that the body needs in small amounts to function properly. c. small molecules used to build proteins. d. an organic compound that is insoluble in water and includes fats. question 4 how many types of vitamins does the human body need? a. 15 b. 11 c. 13 d. 17 question 5 vitamins are a good source of energy. true false
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Why are the elements placed in specific places on the periodic table? 2. periods are rows that run...
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