Organic molecules can range in size from simple molecules to complex structures containing thousands of atoms! Although carbon is present in all organic compounds, other elements such as hydrogen , oxygen , nitrogen , sulfur and phosphorus are also common in these molecules.
A. Burning natural gas
A liquid changing to gas is called boiling or evaporation.A gas change into a solid is called deposition and a gas changing into a liquid is called condensation.half of these are endothermic, meaning they absorb heat from their surroundings.the others are exothermic,meaning they release heat. Hope this helps
Answer:
it would be C, D, E
A is a mixture
B is a mixture
C is a pure substance because Oxygen gas by the chemical symbol O2, is strictly pure
D is pure substance because Gold is one of the basic elements found naturally in nature, and as such, in its pure form
E is a pure substance because Both ice and liquid water are the same substance. H2O Though ice water is a mixture of both solid and liquid it is a pure substance, based on the molecular structure of its components .
F is a mixture
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Answer:
the fish couldn't eat
Explanation:
some of the fish and plants feed off of plants out of water. by removing them, they lost their nutrients.
Carbon dioxide because every other option requires an input.
