Chemistry, 11.09.2021 06:30 arashworth9766
Which of the following is a pure substance that cannot be broken down into simpler substances by chemical means?
a- homogenous mixture
b-chemical compound
c-chemical element
d-heterogeneous mixture
e-solution
Answers: 3
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In the following table, all the columns for the element calcium are filled out correctly. element electron structure of atom electron structure of ion net ionic charge calcium 1s22s22p63s23p64s2 1s32s22p63s23p64s1 +1 true false
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Chemistry, 22.06.2019 13:30
Which statements are true concerning mineral formation? check all that apply. the slower the cooling, the larger the crystals. the faster the cooling, the smaller the crystals. crystals formed from magma are smaller than crystals formed from lava. minerals can only form in solutions when the solution is heated deep underground. when a solution cools, elements and compounds leave the solution and crystallize as minerals. minerals formed from hot water solutions can form narrow channels in the surrounding rock.
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About 3% of the water on earth is freshest. only about 40% of that freshwater is available for human use. why is so much freshwater unavailable for human use?
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Which of the following is a pure substance that cannot be broken down into simpler substances by che...
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