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rjkz [21]
3 years ago
9

If you place a glass rod over a burning candle, the glass turns

Chemistry
1 answer:
gladu [14]3 years ago
8 0
A. the wax is a both; 1. physical change-solid to liquid.
2. chemical change- burned to CO2 + H20 + heat + carbon as seen as black on the rod
b. the wick is neither; the wick does not change, just provides conduit for wax to flame
c. the glass rod is physical change; the carbon is only deported
HOPE THIS HELPS, IVE ALSO LEARNING BEEN LEARNING THIS RECENTLY
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In the chemical reaction: NaOH (s) + H2O Na+ (aq) + OH- (aq), which substance (or substances) is in solution? A. Na+ (aq) only B
bonufazy [111]

Answer:

in a chemical reaction of NaOH with H2O, after NaOH is completely disassociated, we will find Na+ and OH- ions in the solution. (option C).

Explanation:

In a reaction where NaOH is added to H2O.

NaOH is considered a strong base, this means that in an aqueous solution ( in water) it's  able to completely disassociate in ions.

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This means in a chemical reaction of NaOH with H2O, after NaOH is completely disassociated, we will find Na+ and OH- ions in the solution.

3 0
3 years ago
What is the chemical name for the compound with the formula Na2S?
Marina86 [1]
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3 0
3 years ago
Read 2 more answers
And this one too please
weqwewe [10]

Answer: Groups 15 and 16.

Explanation:

All other answer choices include metals, which form ionic bonds.

3 0
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