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Questions tagged [home-experiment]

For questions about a small-scale experiment which can be undertaken with reagents readily available around the house, while observing standard laboratory safety principles and practices. Do not confuse this tag with [everyday-chemistry] or [food-chemistry].

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Is it known for sure that bases feel slippery because of the production of soap/surfactant?

Discussion around the question Why does bleach feel slippery? has started me thinking about the saponification explanation for the slippery feeling of basic solutions. According to Wikipedia: ...
uhoh's user avatar
  • 5,788
6 votes
2 answers
2k views

Can I somehow 'reuse' the chemicals in glow sticks?

I particulary enjoy performing chemical experiments without buying any chemicals for them. I was always sad about the fact that one glowstick lights out, you just throw it into trash can (I like all ...
Tomáš Zato's user avatar
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14 votes
4 answers
35k views

How explosive is hydrogen gas?

I want to electrolyze water to get oxygen and hydrogen. I want to mix them in a regular balloon and ignite it. How much hydrogen would you need in a 2:1 ratio with air for it to be dangerous? Is this ...
Friend of Kim's user avatar
12 votes
3 answers
6k views

Where do the bubbles in a glass of water come from?

This weekend I accidentally left a glass of water on my kitchen table for a few days while I was out of town. Unsurprisingly, bubbles formed on the walls. As I understand from the last time I ...
Etheryte's user avatar
  • 260
11 votes
3 answers
10k views

How does the "kreosan" Coca-Cola rocket work?

A YouTube channel called "kreosan" (made by Russian-speaking people who I believe live in Ukraine) posted a video showing rockets made from bottles of Coca-Cola. Here's what I've figured out from the ...
steveha's user avatar
  • 119
7 votes
1 answer
12k views

Full equation when using vinegar, hydrogen peroxide, and salt to etch copper

What is the full chemical equation when you use the following reactants to etch copper: vinegar / acetic acid (5%) $\ce{CH3COOH (aq)}$ hydrogen peroxide (3%) $\ce{H2O2 (aq)}$ salt $\ce{NaCl (s)}$ ...
Jet Blue's user avatar
  • 251
7 votes
3 answers
2k views

In my homemade electrolysis setup, only the negative end bubbles?

I've created an electrolysis setup by connecting a $6~\mathrm{V}$ battery to a cup filled with saline water via pencils; I am confused as to why only the negative pencil bubbles though. After running ...
Rob Dawson's user avatar
2 votes
2 answers
2k views

Recrystallizing Sodium Acetate from solution

I made sodium acetate using the following reaction: $$\ce{NaHCO3 + CH3COOH ->CH3COONa + H2O + CO2}$$ The resulting solution of sodium acetate isn't pure, it has impurities. I want to crystallize ...
Aeolus's user avatar
  • 405
28 votes
2 answers
13k views

Why does bleach feel slippery?

My high-school chemistry teacher taught us the mantra "bases are slippery-soapy-slimy!" This question and this answer in Quora say this is due to saponification - conversion of lipids from the top ...
uhoh's user avatar
  • 5,788
25 votes
4 answers
4k views

How may copper acetate ligands be manipulated to change colors?

I have a solution of copper acetate and I would like to play around with the ligands to get different colors. Background: The copper acetate was made through mixing vinegar (5% acetic acid), $\ce{...
Dale's user avatar
  • 2,674
16 votes
2 answers
49k views

Does bleach (without rinsing) leave residues and can vinegar, baking soda neutralize them?

It's very difficult to get accurate information concerning household bleach residues. Imagine, for instance, that you pour pure (or diluted) bleach onto fabric or synthetic foam and let it dry without ...
JinSnow's user avatar
  • 439
14 votes
6 answers
54k views

Handling and storing sodium hydroxide, hydrochloric acid, hydrogen peroxide and isopropyl alcohol

I'm an electrical engineering and I hope you can give me some advice as I'm not much into chemistry. I'm trying to start making my PCB (Printed Circuit Board) at home but I'd like to have some advice ...
user51166's user avatar
  • 457
12 votes
4 answers
21k views

Experiment to show that air contains about 20% oxygen

I remember that in my primary classed I had an experiment in science to show air contains 20% oxygen. The experiment involved taking a trough of water, lighting a candle in the middle of the trough ...
Gautam's user avatar
  • 121
10 votes
1 answer
435 views

Gases produced by pyrolysis of cellulose

I heated cotton in a sealed container (with a small hole) over a natural gas flame. Some gases and smoke were produced. What would they probably be? I can come up with some guesses based on the ...
sadljkfhalskdjfh's user avatar
8 votes
1 answer
2k views

Green color substance forming during electrolysis

A green-colored substance formed during electrolysis, wherein the electrolyte was magnesium sulfate and minerals in tap water. I did not have any leads to stick into the water, so I just put a 9 ...
Longmire Longsnapper's user avatar
7 votes
1 answer
24k views

How to Convert Sucrose to Glucose and Fructose

If you have some sort of sports drink that contains sucrose, how would you take that sucrose and break it down into its components, glucose and fructose? I know that sucrose + water will break it ...
Ron's user avatar
  • 71
6 votes
1 answer
2k views

Can I synthesize iron acetate like this?

The oxidation state of the iron doesn't matter too much; I am just trying to make an attractive red-brown ink. Here are some instructions I prescribed to a friend. Here's an approximately decent ...
Simon Kuang's user avatar
2 votes
1 answer
2k views

How did early chemists measure mass of atoms?

Here a book says that Berzelius measured atomic masses using a simple lab and his measurements was so close to modern results. Can someone explain how a person living in 19th century was able to ...
Turkhan Badalov's user avatar
1 vote
1 answer
2k views

Production of acetone from egg shells and vinegar

I learned from these wiki pages that acetone can be produced from calcium acetate, which can be produced by the reaction of eggshells and vinegar. However, I couldn't find the required temperature. ...
sadljkfhalskdjfh's user avatar
1 vote
1 answer
4k views

How can i detect Formalin in food easily

I am trying to detect formalin in different types of food. Formalin $(\ce{CH2(OH)2})$is an aqueous solution of formaldehyde, which is $\ce{CH2O}$ or $\ce{H2CO}$. I used many chemicals to do this, but ...
Shanjedul Hassan's user avatar
-1 votes
1 answer
507 views

Hydrophobic sand in water [closed]

Can you please explain this experiment? Why is this happening?
Numerical Person's user avatar
35 votes
2 answers
134k views

Chemistry behind Gale's coffee maker in Breaking Bad

Is there a scientific basis for the coffee making equipment which Gale Boetticher describes in Breaking Bad? He talks about maintaining the right conditions for bringing out the coffee flavor without ...
Ash's user avatar
  • 709
23 votes
2 answers
14k views

Why does meltwater taste different? [duplicate]

I've noticed that water obtained from melting ice cubes (by keeping them in the open) tastes different from water cooled to the same temperature. Furthermore, the taste goes away if you keep it in ...
ManishEarth's user avatar
  • 15.2k
19 votes
1 answer
2k views

Why do raisins bob up and down in carbonated water?

Yesterday I preformed a fun little experiment where I poured a glass of seltzer water into a glass, then dropped a few raisins into it. I observed that the raisins would float at the top of the glass ...
Scrump's user avatar
  • 402
18 votes
1 answer
3k views

Can I eat the lemons after I have used them as a battery?

After completing the lemon battery experiment, can I eat the lemons when I'm done? More broadly, what will happen to the lemons? What are the chemical reactions, what chemicals might be present/...
gingerbreadboy's user avatar
16 votes
4 answers
4k views

How can you build a model of tetrahedral coordination from objects found at home?

Our college is switching to teaching online mid-semester in hopes of slowing the spread of Covid-19. All the molecular model kits are still on campus. How could you build a model of tetrahedral ...
Karsten's user avatar
  • 40.3k
13 votes
2 answers
13k views

Why does increasing number of salt bridges increase voltage of electrochemical battery?

In an experiment, I set up a cell with lead nitrate (w/ lead electrode) and zinc sulfate (w/ zinc electrode), with a salt bridge containing potassium nitrate. I observed that by increasing the number ...
user1997744's user avatar
12 votes
2 answers
12k views

Why does shampoo lather much more the second time it is applied?

When I shampoo my dirty hair, the first time it does not lather very much. The second time it lathers a lot. Why is this?
trmdttr's user avatar
  • 173
12 votes
9 answers
2k views

How do I excel in Chemistry? [closed]

I wanted to ask an online group of experts/community about how I could improve in chemistry. I study in 10th grade currently and don't get very good grades. Most of the time its a B or C. I have to ...
Princess's user avatar
  • 731
10 votes
1 answer
3k views

What does nutella add to the Coke+Mentos reaction?

Inspired by this question on SFF.SE. The Diet Coke + Mentos experiment has been a popular one for a while now, and I've read a little bit about the science behind it. I recently discovered this ...
Jason Baker's user avatar
9 votes
1 answer
6k views

Is there a means to measure pH without indicators?

I have created a solution that should contain hydroxide ions. Therefore, the pH > 7, but is there any way to roughly estimate the pH in absence of any indicator? Maybe using current, or checking ...
user209347's user avatar
9 votes
2 answers
2k views

What is the purpose of froth in washing clothes?

I stay at a rented place and there is no washing machine. I, now, wash clothes in a bucket. When I add detergent, sometimes there is froth, sometimes there is not. I wonder if this had any impact on ...
aarbee's user avatar
  • 501
8 votes
1 answer
9k views

Best Fuel for Potato Gun

I have been using deodorant to propel potatoes (potato gun :D), but I want to switch over to pure butane. However, in order to do this safely I have to know how much butane is typically in deodorant (...
Thomas Wagenaar's user avatar
8 votes
3 answers
832 views

A unique demo for singlet oxygen?

I have long known that mixing bleach and peroxide produces oxygen gas: $$\ce{NaOCl + H2O2 -> O2 + H2O + NaCl}$$ However I only recently learned that the specific form of oxygen produced by the ...
Curt F.'s user avatar
  • 21.9k
8 votes
4 answers
12k views

Synthesis of hydrazine with bleach and ammonia

I am trying to make rocket fuel using hydrazine, hydrogen peroxide and home products. I want to put an action figure in orbit. Is there any way to synthesize hydrazine with bleach and ammonia, using $...
MirlvsMaximvs's user avatar
8 votes
1 answer
2k views

Sodium permanganate from manganese dioxide and sodium hypochlorite

This page states that sodium permanganate can be formed by the reaction of manganese dioxide with sodium hypochlorite and sodium hydroxide: $$\ce{2 MnO2 + 3 NaClO + 2 NaOH -> 2 NaMnO4 + 3 NaCl + ...
sadljkfhalskdjfh's user avatar
8 votes
5 answers
46k views

How can I separate the vinegar from a 5% white vinegar to make a more concentrated solution.

I was under the impression that if I put a semi full bottle of vinegar in the freezer the water would freeze but the vinegar would not until a lower temp. Therefore I could remove the bottle after ...
hortstu's user avatar
  • 259
8 votes
2 answers
1k views

Producing ketones from secondary alcohols using hydrogen peroxide

Usually, to produce ketones from secondary alcohols (e.g. propanone from 2-propanol), people use a solution of potassium or sodium dichromate with a small amount of sulfuric acid. Can other oxidizers ...
sadljkfhalskdjfh's user avatar
7 votes
1 answer
305 views

Electrolysis puzzle

I created an electrolysis setup to study how different electrolytes, their concentrations, and the electric current affect the "speed" of the electrolysis process. With that in mind, I built a simple ...
Leo Berenga's user avatar
7 votes
4 answers
16k views

How do I control the negative temperature in an experiment?

If one were to adjust the positive temperature in an experiment, they would use a heating plate, or a stovetop. How would one adjust negative temperatures in an experiment? (Not keeping the ...
unbindall's user avatar
  • 417
7 votes
3 answers
2k views

Will this reaction form magnesium carbonate?

I have magnesium oxide pills I take. I know if I dissolve them they'll form magnesium hydroxide, and I'm trying to make pure magnesium from my pills. I've come up with a double replacement reaction, ...
Renny's user avatar
  • 79
7 votes
0 answers
1k views

Sugar burning with the assistance of ash

If a plain pile of sugar (or a sugar cube) is heated with a torch, it just melts and gives off smoke. However, if some paper or wood ashes are added, it burns quite easily. What are the ingredients of ...
sadljkfhalskdjfh's user avatar
6 votes
3 answers
3k views

Is there a type of detergent/surfactant that evaporates at STP?

Are there any type of detergent/surfactant chemicals that would be good for removing dirt and grease from fabric that also would evaporate from the clothes within, say, 24 hours leaving no residue? ...
Eriek's user avatar
  • 335
6 votes
1 answer
5k views

Citric acid chelates calcium carbonate more than ethanoic acid, why does this result in a faster rate of reaction?

I performed an experiment using egg shells (calcium carbonate) to represent teeth and reacted the calcium carbonate with acids. When measuring the rate of reaction citric acid had a higher rate of ...
Radhika's user avatar
  • 149
6 votes
5 answers
26k views

How to dissolve steel without affecting aluminium alloy

Disclaimer: I have very limited knowledge of chemistry My problem is the following: I have motorcycle part made from some sort of Aluminium alloy - most probably 6005, 6061-T6 or 7005. And inside of ...
Yuriy Nakonechnyy's user avatar
5 votes
2 answers
8k views

Safe endothermic reaction that gets below freezing?

I have a project/idea I am working on but I am only 14 years old and I need some help. I'm looking for an endothermic reaction that gets below freezing, but the chemicals before the reaction and ...
Jack's user avatar
  • 59
5 votes
3 answers
8k views

Is it possible to extract magnesium from epsom salt?

Is it possible (at home) to extract magnesium from $\ce{MgSO4·7H2O}$, also known as Epsom salt (or, alternatively, from $\ce{MgSO4}$)?
asd's user avatar
  • 59
4 votes
5 answers
12k views

Homemade reactor for water cooling

Background: Well, it's summer here in Brazil, and a great way to keep cool is drinking a so called Tereré, and, of course, we do need cold water for that. Problem: I was looking for endothermic ...
HericDenis's user avatar
4 votes
1 answer
10k views

Chalk and vinegar

So, I wanted to make calcium acetate, through the reaction of calcium carbonate and vinegar. My proposed reaction: $$\ce{2CH3COOH(aq) + CaCO3(aq) -> Ca(CH3COO)2(aq) + CO2(g) + H2O(l)}$$ It seems ...
QuarterShotofEspresso's user avatar
4 votes
1 answer
3k views

Can rocket candy explode during the preparation?

I would like to follow the steps in this video: https://www.youtube.com/watch?v=hyPysthIRss After I mixed the Potassium nitrate KNO3 and the ...
Iter Ator's user avatar
  • 143