B
Explanation:
Burning is a chemical change and cutting grass is a physical change
Answer:
See explanation
Explanation:
Crystals can be made from methanol by recrystallizing the plant extract from methanol.
The methanol/water system is heated rapidly using a hot plate and the plant extract dissolves in the heating solution until a clear solution is obtained.
The solution is now cooled rapidly. The interior of the flask used for the re crystallization may even by scratched to assist the quick formation of crystals. Large crystals of plant compounds may be obtained using this method. This process should be carried out in a fume hood because of the toxicity of methanol.
No, they can have potential energy
Answer:
b. double bonds, triple bonds, carbon atoms,and hydrogen atoms.
Explanation:
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Answer:
It's false
Explanation:
Mixtures are always combinations of the same compounds that are at different states.
