A small-scale experiment which can be undertaken with reagents readily available around the house, while observing standard laboratory safety principles and practices

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9
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3answers
916 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 ...
3
votes
2answers
82 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 ...
3
votes
0answers
17 views

Silicon degassing with negative pressure

I am planning to use polydimethylsiloxane (PDMS) to create phantom for mimicking tissue for imaging. For this, I plan on using SYLGARD® 184, which is a viscous liquid. When adding other components to ...
6
votes
2answers
103 views

In which country is it allowed to practice non-clandestine amateur chemistry?

I travel a bit so am flexible where I live, and have taken a recent interest in chemistry to try to gain an understanding of physical reality. I find learning from textbooks to be good, but want to ...
1
vote
2answers
40 views

What easy to conduct (at home) reactions could yield solid carbon?

I am trying to isolate pure carbon in its elemental form. Are there any decomposition reactions or other easy to carry out reactions to yield solid carbon? and in the case that it is isolated, does it ...
0
votes
1answer
42 views

How to determine methane percentage at home?

Suppose I have gas bottle and gas cooker. Suppose I have propane in my bottle and I suspect it is diluted with unknown gas. How can I measure with simple instruments, how many propane I have ...
2
votes
1answer
29 views

Hydrogenation at atmospheric pressure in amateur environment

I was planning on doing some small scale hydrogenation practicals at atmospheric pressure (probably from Vogel) and ran into a couple of questions. I will be using the "balloon method" (described in ...
1
vote
0answers
39 views

Purifying an organic liquid [closed]

I'm looking for an experiment that would enable me to purify an organic liquid. Should I distill the liquid and then use a drying agent to dry it? I would also like to know what equipment I would ...
2
votes
1answer
32 views

How to convert sodium aluminate back to sodium hydroxide?

I had dissolved a bunch of aluminium foil in an aqeous solution of sodium hydroxide. The resulting solution consists mainly of sodium aluminate with very little excess sodium hydroxide. What I want to ...
4
votes
1answer
44 views

About purifying ethanol - What type of ethanol?

I'm reading this book, trying to learn some basics of chemistry. One of the experiments is about purifying ethanol. Now, I have some difficulties in deciding what kind of ethanol solution I should ...
3
votes
1answer
63 views

Mimic a volcano eruption with household chemicals?

How can one mimic a volcano eruption using household chemicals safely? We've tried it in a testing tube with baking soda and vinegar. This wasn't quite as impressive as expected. On the web we've ...
1
vote
1answer
28 views

What material is synthesized in the rubber egg demo?

One of the popular do-at-home chemistry demonstrations is placing an egg in a container of vinegar for two days. After that period most if not all of the eggshell has dissolved and the outer part of ...
4
votes
2answers
57 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 $\ce{MgSO4}$)?
1
vote
2answers
31 views

The relationship between energy and air pressure?

When boiling water at room temperature, what is the relationship energy has with the air pressure that is making the water boil cold instead of hot?
-1
votes
2answers
54 views

Concentration of hydrochloric acid for electrolysis?

How much hydrochloric acid (maximum) should I use to do electrolysis of water, and how much amount of voltage should I use to get the maximum of hydrogen and oxygen?
1
vote
1answer
153 views

How to cheaply extract iodine from an alcoholic solution?

I have an alcoholic solution of iodine. My goal is to extract the pure iodine without using rare or expensive compounds. How could I do this?
0
votes
0answers
17 views

Can N-Zorbit absorb wine and then dried while keeping the same alcohol level?

I'm trying to see if you could use the modified starch N-Zorbit, a maltodextrin, to absorb a low sugar wine (pinot noir for example) and then dry it while keeping the alcohol levels the same or close? ...
3
votes
2answers
67 views

What kind of fire extinguisher for chemistry at home?

The are various types of fire extinguishers. They can be based on water foam dry powder carbon dioxide wet chemicals halon etc. Suppose one is learning chemistry at home. What type of fire ...
4
votes
1answer
46 views

How to activate charcoal

I readily admit to being a pyrophiliac and can generally be found near fire when there is fire. (Fire good, tree bad.) One of the byproducts of fire, naturally, is charcoal. I was looking into ways ...
1
vote
1answer
41 views

How can the chlorophyll concentration of plants be measured?

Is there a way to measure the chlorophyll content of plants (from e.g. leaves) with basic chemistry equipment (at home)?
2
votes
2answers
37 views

Choosing a balance for home chemistry

A good balance is an important piece of equipment for chemistry. For home chemistry, the price of the balance is unfortunately limiting .. How should one go about picking a balance (for home ...
3
votes
1answer
50 views

What is the effect of Oxygen on soap foam?

I've been wondering the effect of $\ce{O2}$ on soap foam in a closed, test room. The room contains a candle and soap foam. That is to say: if the room has lower and decreasing $\ce{O2}$ in its air, ...
0
votes
0answers
84 views

What compound can give off heat when it comes in contact with ice?

What compound is able to produce heat when it comes in contact with ice? The compound has to be able to produce heat multiple times. I was thinking of a compound that is similar to Calcium Chloride. ...
1
vote
3answers
124 views

What will eventually happen to uncovered vegetable (seed) oil exposed to the air?

If I leave some olive oil uncovered and fully exposed to indoors air for enough time (though away from UV exposure or any other environmental factors), what will happen to the oil? I read here that ...
5
votes
1answer
118 views

Is there a reaction happening between Coconut Oil & Hydrogen Peroxide?

On a whim, I mixed together some coconut oil and drug store (3%) hydrogen peroxide and washed my hands with it. It definitely felt less greasy than pure coconut oil, left my hands feeling clean and ...
4
votes
1answer
105 views

Experiments in chemistry involving use of stereo microscope?

I recently got a decent stereo microscope. Besides using the scope to teach my children, I have been thinking of picking up something new to learn myself. I have been interested about chemistry for a ...
0
votes
1answer
82 views

Salt Analysis using spectroscopy

A few days ago, I learned the lengthy process of salt analysis during my practicals. The process is based on deductive reasoning but is too lengthy. What I am thinking is, can't it be done using the ...
0
votes
1answer
70 views

How to accurately calculate the electromotive force for various conditions in a salt water battery?

This question is on the same topic as this one but more complex. So, let's consider the cell with $\ce{Zn}$ and $\ce{Cu}$ electrodes inside the $\ce{NaCl}$ solution. On the $\ce{Zn}$ electrode we ...
4
votes
2answers
114 views

Experiment to prove that water has air

In elementary school, there was an experiment to show that water has dissolved air, which involved boiling some water and observing the drops at the surface of the container, and this proved that ...
3
votes
1answer
58 views

Is 1000ml of 'hot-ice' solution dangerous?

So I was trying out the sodium acetate trihydrate 'hot ice' experiment, and my 300ml test worked great. So, naturally, more is better right? (cringe) Now I have a 1000ml in a pyrex beaker cooling ...
0
votes
1answer
47 views

Chemistry Experiments at Home [closed]

I'm looking to set up a small chemistry lab in my garage for doing demos. I think it would be good for a freshman student I'm mentoring and also as a hobby. Does anyone know where I can buy apparatus ...
2
votes
1answer
47 views

Any home made tricks to fill up a baloon that floats?

These days there are a number of fancy balloons available, some of them are very beautiful. As always, they loose their gas overtime and don't rise anymore. Some of those new type balloons appear to ...
2
votes
1answer
63 views

Is purple paint more suspeciple to UV damage than other colors?

I was recently sorting some Mardi Gras beads. These are cheap plastic beads on strings, coated in cheap metallic paint. While sorting the beads into different colors, I noticed that the purple beads ...
4
votes
2answers
89 views

How ‘lively’ would this ‘health’ potion be?

I’ve stumbled across a rather peculiar recipe for a allegedly ‘health’ potion in a computer game, composed of an unspecified amount of each of the following: rust (iron oxide) saltpetre (potassium ...
2
votes
1answer
74 views

What would happen if you used NaNO3 instead of KNO3 in the smoke bomb experiment?

A very famous experiment goes like this: $\ce{KNO3}$, molten wax and sugar are mixed and later burnt; the resulting mixture produces quite a lot of smoke. After hearing about the experiment, I ...
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0answers
27 views

Colloidal Silver?

There are a lot of tutorials on the net on how to make colloidal silver. Many of them basically go like this - Hook up two 99.99% silver coins or wires to three 9V batteries, and put the silver in ...
1
vote
1answer
74 views

Make a silver zinc battery

I have a shaver that runs off a rechargeable battery that is dying. Would it be feasible to make a silver zinc battery and use it to replace the existing battery? Cost is not an object, anything less ...
7
votes
2answers
201 views

Where's my experimental error coming from?

I'm teaching chemistry to a home-ed 15 year old. Occasionally we do some practical work, since I believe very strongly that physical science learning should have some real lab work to bring it alive, ...
3
votes
0answers
96 views

Most effective means of removing coffee stains from carpet

I have several old coffee stains on a carpet. Googling "coffee stain removal" reveals a variety of suggested cleaning substances-- vinegar, baking soda, laundry detergent, etc. I have used all of ...
1
vote
1answer
75 views

What factors might affect the reaction between potassium permanganate and ethylene glycol?

Our chemistry club has, for the last few years, been showing off some reactions to prospective students. One of the most popular tricks we have is a bit of an explosive one: we mix some potassium ...
1
vote
1answer
48 views

Non-wetting fluids for precise volume measurements

I need to precisely measure the internal volume of an open steel fixture. I was planning to do this via displacement, but I'm wondering what the best fluid would be. Ideally it should have no ...
2
votes
1answer
48 views

What is the chemical reaction in a home-made high-bouncer ball?

I took the kids to the Science Museum in Canberra (Questacon) and one of the toys we brought back was a Home-Made High Bouncing Ball. Now I did it with the kids and it was amazing. You pour the ...
2
votes
1answer
86 views

How does potassium nitrate work as an oxidiser?

Potassium nitrate is very popular compound in pyrotechnics, used as an oxidiser. It can be mixed with sugar to make a "rocket candy", with coal and sulphur to form black powder. You can stick it on ...
0
votes
0answers
74 views

Does potassium nitrate + sugar solution degrade?

I have created a solution of $\ce{KNO3}$ and table sugar in order to create fuse from hemp rope. I wet the rope in the solution and let it dry - I repeat this process several times. It works and ...
5
votes
1answer
177 views

Why is sugar used in low-cost homemade rockets?

I was thinking about making a "rocket candy". It's relatively inexpensive rocket based on sugar and some oxidiser, mostly $\ce{KNO3}$. The fuel is usually formed by heating the mix of both compounds ...
1
vote
0answers
76 views

Best Invisible Ink for Clothing

I am interested in writing and revealing a message in invisible ink for theatrical purposes. I found a list of potential compounds here but I am having a hard time prioritizing which to ...
-2
votes
1answer
45 views

pH of baking soda in water? [closed]

If I dissolve 1g of sodium bicarbonate powder into 400 ml of distilled water, what will the pH of the resulting solution be?
2
votes
2answers
503 views

Are there any solvents that dissolve talcum powder?

I understand that talcum powder is insoluble to water, would alcohol or something be able to dissolve it?
5
votes
2answers
118 views

Baking soda bath to deacidify newsprint?

I have some oil-pastel sketches on newsprint I would like to treat for framing (and longevity). My plan is to rinse them in a deacidifying bath, then use wheat paste to wet-mount them to heavyweight ...
1
vote
1answer
372 views

Why does steel wool catch fire when rubbed with a battery?

I was watching an episode of Man vs Wild where steel wool was rubbed with phone battery. To my surprise, the wool caught fire. What is the reason for this?