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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How can I turn Natural gas from liquid to gas?

I hope i am not too off topic, couldn't find a more suitable stack-exchange forum for this, if there is a better one, please point me to it, Well my question is the following, I am working on a ...
2
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1answer
26 views

What is the reaction in a child's 'add water and watch the egg hatch' toy?

My son and daughter got given gifts where you place a plastic egg in water, and the (rubber?) toy inside expands (over three days) and breaks the shell of the egg so it 'hatches'. I also observed ...
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0answers
22 views

Determining which hydrate of calcium chloride I have?

I have calcium chloride in the form of small (1-2 mm) round white pellets, originally bought at a home-brew shop. The packaging gives no indication what hydrate it is. Since each water molecule adds ...
10
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3answers
941 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
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2answers
91 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
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0answers
20 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
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2answers
113 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 ...
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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 ...
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1answer
45 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 ...
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1answer
35 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 ...
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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
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1answer
35 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 ...
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1answer
46 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 ...
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1answer
75 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 ...
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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
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2answers
61 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 $\ce{MgSO4}$)?
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33 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?
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58 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?
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1answer
161 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?
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0answers
21 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? ...
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2answers
72 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
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1answer
47 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 ...
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1answer
44 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)?
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2answers
39 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 ...
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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, ...
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0answers
88 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. ...
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3answers
132 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 ...
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1answer
154 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
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1answer
106 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 ...
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1answer
95 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 ...
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1answer
77 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 ...
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2answers
138 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
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1answer
61 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 ...
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1answer
50 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
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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
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1answer
65 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
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2answers
91 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
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1answer
84 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 ...
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1answer
80 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
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2answers
213 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, ...
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0answers
118 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 ...
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1answer
87 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
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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
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1answer
49 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
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1answer
92 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 ...
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81 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
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1answer
183 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 ...
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79 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 ...
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1answer
52 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?