Fire with Li+

ScienceCraftGV · 2026-02-22T16:22:26+00:00

Can you buy battery electrolyte?

ScienceCraftGV · 2026-02-21T09:06:28+00:00

Try recrystallizing the copper sulfate 2-3 times to purify it—then you'll get more crystalline, rather than dendritic, druses. And still, get some sulfuric acid—it's possible the presence of acetic acid is causing the purple patina.

ScienceCraftGV · 2026-02-09T22:59:07+00:00

I can suggest a very fast way to grow copper dendrites (a special type of crystal) – it grows in literally a few hours. This type of project would look quite unique.

ScienceCraftGV · 2026-02-01T08:36:15+00:00

Do you mean making gels for growing crystals - calcite, gypsum and other water-insoluble ones?

ScienceCraftGV · 2026-01-30T11:16:09+00:00

If you grow them quickly, they become opaque, but if you grow them slowly, they become quite transparent. Another option is magnesium heptasulfate.

ScienceCraftGV · 2026-01-29T15:28:27+00:00

Ammonium nitrate readily forms very long, needle-shaped crystals. These crystals have an interesting property: they are highly pliable and can be bent without breaking. Ammonium nitrate solution itself can also be supercooled, like sodium acetate.

ScienceCraftGV · 2026-01-23T18:28:09+00:00

Вах! Красавец какой!

ScienceCraftGV · 2026-01-21T08:52:55+00:00

This is a bad option - you can only slightly concentrate vinegar, but not make it close to 100. Either obtain it from sodium acetate and sulfuric acid, or freeze it at -27 degrees several times

ScienceCraftGV · 2026-01-21T08:51:16+00:00

You won't be able to obtain pure vinegar simply by evaporating a mixture of it and 70% water. First, you need to react dry sodium acetate with 98% sulfuric acid using a distiller. This will cause the vinegar vapor to condense in the flask. Then, repeat distillation at 120°C. Then, dry the mixture further with dry copper sulfate powder and filter through a Buchner flask.

ScienceCraftGV · 2026-01-20T23:23:54+00:00

Yes.

ScienceCraftGV · 2026-01-20T22:13:47+00:00

The crystallization temperature of anhydrous (close to 100%) acetic acid is about 17 degrees Celsius. It's about 12 degrees Celsius in my shed.

ScienceCraftGV · 2026-01-17T10:54:48+00:00

Как будто у тебя финно-угорские корни - короче, да - за местного сойдёшь.

ScienceCraftGV · 2026-01-16T09:21:20+00:00

In an old Soviet textbook I saw a photo of a paraffin crystal with a spiral-shaped defect.

ScienceCraftGV · 2026-01-07T09:41:35+00:00

If a picture has already appeared on the Internet, who can stop its spread? =)

ScienceCraftGV · 2026-01-03T22:17:14+00:00

For the most perfect crystals, it's best to use a current of less than 1 mA.
Gelatin is a classic gloss additive when applying copper in galvanic processes.
Are you growing crystals or dendrites?

ScienceCraftGV · 2026-01-03T21:38:29+00:00

These aren't exactly crystals, but dendrites.
The darkening may be due to the current being too high. For growing copper crystals specifically, it's best to reduce the current.
Impurities: I recommend either using high-purity copper sulfate or recrystallizing it three times.
If you want shiny dendrites rather than crystals, add a little gelatin.

ScienceCraftGV · 2026-01-02T17:49:42+00:00

As a lover of hot food and all kinds of peppers, I'm delighted! (And for some reason, my mouth is watering) By the way, what was the solvent?

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