Chemistry, 04.12.2019 01:31 jesussanchez1445
In a chemical reaction, if a color change is detected, if an odor change is detected, or if a precipitate is formed, then:
a chemical reaction has definitely occurred
only physical reactions have occurred
a chemical reaction may have occurred
both physical and chemical reactions have definitely occurred
Answers: 1
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Chemistry, 23.06.2019 15:40, butterflycc
The table below shows the freezing points of four substances. substance freezing point (°c) benzene 5.5 water 0 butane –138 nitrogen –210 the substances are placed in separate containers at room temperature, and each container is gradually cooled. which of these substances will solidify before the temperature reaches 0°c? benzene water butane nitrogen
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In a chemical reaction, if a color change is detected, if an odor change is detected, or if a precip...
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