The chemical change that involves breaking down substances using electricity is C. Electrolysis.
Answer:
D. If the acid was separated from the vinegar, chicken bones wouldn't become bendy in the remaining vinegar.
Explanation:
The hypothesis states that the bone becomes bendy because of the acid in the vinegar, so therefore, if the acid is removed from the vinegar it won't become bendy.
Answer:
Two advantages are: Its cheap and it is a renewable energy source. Two disadvantages are it's not windy everyday and it will take up a lot of space for windmills.
Explanation:
The concept that this best illustrates is replication.
We should describe a little bit the legend.
A - Element - we should have circles with same color and not bonded together (argon gas).
B - Compound - here we may have circles with same or different color bonded together (water or oxygen which is a diatomic molecule).
C - Mixture of elements - circles with different colors not not bonded together (mixture of noble gases).
D - Mixture of compounds - circles with same or different color bonded together but we should see two or more types of connectivity between circles (mixture of water and ethanol).
E - Mixture of elements and compounds - circles with same or different color bonded together mixed with circles with same color and not bonded together (a mixture between oxygen which is a diatomic molecule and noble gas like argon).
Now we may answer the question:
1) B
2) C
3) D
4) D
5) A
6) B
7) B
8) E
9) E
10) D
11) B
12) D
13) D
14) D
15) D
