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elixir [45]
3 years ago
14

What term refers to columns of elements?

Chemistry
1 answer:
Ira Lisetskai [31]3 years ago
8 0
The term is group
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A nucleotide consists of a phosphate group, a pentose sugar, and a __________________, all linked together by covalent bonds. po
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Commercial cold packs often contain solid NH4NO3 and a pouch of water. The temperature of the pack drops as the NH4NO3 dissolves
Yanka [14]

Answer: b. \Delta H_{soln} is positive and \Delta S_{soln} is positive.

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NH_4NO_3\rightarrow NH_4^++NO_3^-

7 0
3 years ago
You mix two clear liquids and a colored solid forms at the bottom of the beaker. Do you think this is a chemical change? How can
UkoKoshka [18]
The answer is yes. A chemical change occurred.
Chemical change is defined as the rearrangement or alteration in the of atoms in one or more substance which result in the formation of a new substance.

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Hope this helps :)
7 0
3 years ago
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