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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7
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3answers
2k views

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: ...
6
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2answers
933 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 ...
14
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4answers
31k 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 ...
12
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3answers
3k 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 ...
6
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3answers
1k 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 ...
11
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3answers
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 ...
26
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2answers
9k 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 ...
25
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4answers
3k 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{...
4
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1answer
7k 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 $\ce{NaCl (s)}$ ...
14
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6answers
51k 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 ...
12
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4answers
18k 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 ...
10
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1answer
353 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 ...
6
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1answer
20k 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 ...
14
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2answers
42k 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 ...
6
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1answer
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 ...
1
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1answer
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 ...
1
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1answer
1k 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. ...
-1
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1answer
438 views

Hydrophobic sand in water [closed]

Can you please explain this experiment? Why is this happening?
35
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3answers
103k 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 ...
12
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2answers
9k 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?
17
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1answer
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 ...
13
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2answers
10k 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 ...
11
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9answers
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 ...
8
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1answer
1k 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 + ...
18
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1answer
2k 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/...
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2answers
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 ...
8
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2answers
853 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 ...
8
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4answers
15k 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 ...
8
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4answers
39k 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 ...
6
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3answers
2k 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? ...
6
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0answers
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 ...
2
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2answers
10k views

Separating iron from blood

How can I separate iron from blood, without doing any damage to the blood/haemoglobin? I have thought about using a magnet, but apparently iron in blood is not magnetic, and I have also looked at ...
10
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1answer
2k 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 ...
9
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1answer
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 ...
8
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3answers
600 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 ...
8
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1answer
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 ...
8
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4answers
11k 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 $...
7
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1answer
6k 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 (...
6
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1answer
4k 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 ...
6
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3answers
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, ...
6
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5answers
22k 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 ...
6
votes
1answer
207 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 ...
5
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2answers
7k 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 ...
4
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1answer
3k views

How to measure amount of oxygen (or carbon dioxide) in air?

I'm not chemist, and I'm looking for easiest way to measure how much oxygen plant in closed container will produce per hour [can measure over time for increased accuracy]. My first idea was to ...
4
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1answer
2k 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 ...
4
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5answers
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 ...
4
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3answers
7k 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 $\ce{MgSO4}$)?
3
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3answers
12k views

How to test for methanol?

I wanted to make some ethanol from baker's yeast and I used sucrose. I've made it and put it in a glass jar. I left it on a warm place (near the radiator) until the yeast died and after they died I ...
3
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0answers
63 views

Molar ratios not leading to complete reaction in Schweizer's reagent production

In my home lab, I've reacted $\ce{Cu(OH)2}$ with aqueous ammonia to produce Schweizer's reagent. However, I'm surprised by the amount of ammonia required to react with this amount of $\ce{Cu(OH)2}$. ...
3
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1answer
2k views

Decomposition of iron(III) acetate?

I recently asked about the synthesis of iron (III) acetate. I want a rather concentrated solution to use as a calligraphy ink (which will be dissolved in alcohol/water). Will it be okay to heat the ...