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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2
votes
1answer
233 views

Are there any tricks I can use to pull SO2F2 out of the air?

A massive apartment complex near where I live is being fumigated with Vikane gas (sulphuryl flouride, $\ce{SO2F2}$). The process will take a long time (weeks) because there are a lot of buildings, ...
2
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2answers
345 views

How can I formulate a rate equation using a solid catalyst?

When formulating a rate a equation two experiments must take place: one in which the reactant concentrations are varied, and one in which the catalyst concentrations are varied. If I am given a ...
4
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5answers
11k 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 ...
0
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1answer
158 views

Can freezing break up sugar polymers?

I recently freezed a huge bunch of apple slices, and thawed them again a few days later. After thawing, I noticed a few things compared to a batch that I had put in the fridge (no freezing) The ...
5
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1answer
5k views

How would one go about making a cheap freeze spray?

I'm interested in making a liquid freeze spray, for a fun science project. My only experience with this comes in spraying inverting canned air dusters, which spray a -60F mist/liquid (liquid if you ...
8
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4answers
31k 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 ...
0
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3answers
235 views

Vacuum Distilled Medicine

If I were to buy/build a large still, that was air tight, and could hold a vacuum, and filled the reservoir with vegetable glycerin (which has a boiling point higher than the majority or desired ...
2
votes
1answer
80 views

Reaction with carbon

Usually maximum time we see then after cooking by gas there is no black spot on the pot. But continually burning can affect the pot surface and makes black powder. My question is: What is the ...
4
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1answer
145 views

Safe, easily detectable gas or aerosol for testing fume hoods

I've recently started undertaking a project to construct a small fume hood. So far I'm considering its use for soldering, 3d printing with ABS and polystyrene, and PCB etching using a muriatic acid/...
3
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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 ...
5
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2answers
33k views

Different reactions of clean and rusty iron nails in vinegar (acetic acid)

I have submerged a iron nail in vinegar twice recently. What is puzzling me is the different results each time. The first time I submerged it, it was covered in rust. When I put it in the solution of ...
0
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1answer
440 views

sodium persulfate microwave heating cause crystallized particles

I use Sodium persulfate to etch a copper board to produce a PCB. I mix 1 dl sodium persulfate with 1 liter hot water. When the water get cold, I heat it up by microwave. After the microwave, I see ...
11
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4answers
17k 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 ...
3
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1answer
339 views

Testing for Iron-Gall Inks

I have to bottles of Lamy blue-black fountain pen ink. It turns out that some months ago the composition of the ink was changed by the manufacturer and there is no difference in the package. Before, ...
2
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1answer
522 views

Extracting Zinc (oxide) from baby powder

I have a bottle of baby powder that is 15% Zinc oxide and the rest is talc. Is there an over-the-counter way of purifying zinc oxide from it? I'm trying to make some sunscreen from it.
1
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1answer
1k views

How to disarm and correctly dispose of tear gas spray?

I have a can of spray for self-protection which has expired way back in 2008. It hasn't been used at all, and it doesn't seem a good idea to just throw it away without disabling it somehow first. I'm ...
2
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0answers
423 views

Analysis of a mixture of carbonate salts

We've got a mixture of carbonate salts. It's a buffer, used in fish tanks. How might we go about identifying the components and their concentrations? I suspect it'd be hard to separate some of this. ...
4
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2answers
3k views

How do you explain the thread sticking to an ice-cube when salt is sprinkled over it?

So this experiment goes like this : You take an ice-cube You put a thread on top face of it You sprinkle some common salt on the ice-cube wherever its touching the thread You wait for sometime (...
5
votes
3answers
218 views

Can I perform a stable isotope analysis at home?

I'm interested in measuring the stable isotope ratios of some bird feathers. I'm aware that a mass spectrometer is required to measure stable isotope ratios. Is it possible to measure stable isotope ...
8
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1answer
615 views

Easy-to-do experiments that clearly show outstanding properties of graphene

By chance, we received some monolayer graphene sheets (20 cm x 20 cm) and mixed coper-graphene wires for free at our university. I would like to prepare some very-easy-to-do experiments for the ...
6
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1answer
11k views

Chemical methods to extract Oxygen from Rust

Let's say I have a large quantity of rust and want to extract the oxygen from it in a way that allows me to collect the oxygen in a container. What chemical process can I use to do this and what ...
4
votes
1answer
845 views

Calculate Ethanol content after heating for N minutes

Does there exist a formula I can use to calculate alcohol content of a solution after heating it for some time? I have the following use-case: I am making a pecan pie. I have a thick sugary solution. ...
1
vote
1answer
235 views

How To Obtain A Reducing Sugar At Home?

I'm looking for a reducing sugar such as glucose or maltose (any reducing sugar will do) for some home chemistry experiments. Is there a readily available reducing sugar that I might source without ...
1
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1answer
2k views

Figuring out the volume of air trapped inside a bottle of water

I am doing a chemistry lab report on figuring out the volume of air trapped inside a bottle. Here is the procedure: Fill a larger container or tub about half full with tap water Fill a 2 L plastic ...
2
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2answers
1k views

Time to effervescent an effervescent tablet

Say I have an effervescent tablet and I put in water. I thought that if I break the tablet in two halves it would dissolve quicker than with the whole table (without breaking), but it actually takes ...
2
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1answer
143 views

I'm looking for a substance that can be used as an adhesive, but that will burn without producing any ash

I need to 'adhese' paper to plastic, but I need the adhesive to be flammable and quick burning, but without producing any ash or too many toxic fumes. I know this is an absurd question, but does ...
2
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2answers
1k views

Hot and cold air interaction in a sealed environment

What would happen if air heated to 1200 degree's Fahrenheit in a sealed environment was injected with colder air? No specific pressure defined yet just a general idea of potential interaction between ...
6
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1answer
1k views

What household substances could be distilled

I'm looking to experiment with distillation to have a basis for understanding the theory slightly better, and get a better feel for it. I'm hoping for some suggestions as to what I could try ...
2
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1answer
2k views

How to compare viscosity of alcohol to water?

Are there any simple at-home experiments to test the relative viscosity of alcohol to water? If they are the same or practically the same, are there any household liquids that are less viscous than ...
4
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1answer
4k views

Is the vinegar and baking soda experiment safe for children?

To be more specific, could the carbon dioxide fumes produced in the reaction be harmful to a small child? I don't have a strong background in chemistry, and I was prompted to ask this question when it ...
4
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4answers
9k views

Homemade Rocket Fuel and Engine

I want to put an action figure in orbit but I need to know how to make a secure yet not too expensive rocket fuel engine. The design of the engine must very primitive and not too complicated. I've ...
10
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4answers
9k 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 $...
1
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1answer
2k views

Oxidization of Copper In Electrolysis

So during school today, I am running an electrolysis experiment with water and sodium bicarbonate copper leads on both the anode and cathode. I am noticing the usual $\ce{NaO}$ on the anode, and $\ce{...
4
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2answers
39k views

Time required for a thin layer of ethanol to evaporate?

If someone were to pour about 5 ml of 94% pure ethanol on a flat surface and at room temperature, approximately how much time would it take for it to evaporate? EDIT: In others words, it is to know ...
14
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5answers
3k views

Is there a simple field test for heavy water?

Thought experiment Given two glasses of water, how would one detect which glass contains heavy water, and which contains potable water without using complicated laboratory equipment? Something like ...
3
votes
1answer
3k views

How to extract pure caffeine from tablets?

I have some caffeine tablets and I want to extract the pure caffeine from the rest of the ingredients (caffeine 200 mg. Inactive ingredients in order are corn starch, dextrose, dicalcium phosphate, D&...
3
votes
1answer
6k views

Reaction between potassium permanganate, alum, and sodium hydrogen sulfite

When I was a teenager, I played with a chemistry set. I tried adding potassium permanganate, alum, and sodium hydrogen sulphite (not sodium hydrogen sulphate) to water. Upon adding the third ...
8
votes
1answer
8k views

Identity of a green substance formed during electrolysis reaction?

I did a short experiment in which I connected a $1.5\:\mathrm{V}$ battery with 2 paper clips into a bowl of water to which I added salt. After a while, I saw a yellowish-greenish cloud inside the ...
12
votes
2answers
191 views

How to plate zinc evenly on a threaded bar

I need to set a number of threaded bars into cement, to hold a new gatepost. When I cut the bar into shorter pieces, the metal near the cut became red hot, presumably hot enough to evaporate some or ...
7
votes
1answer
558 views

How can one optimise the formation of copper acetate?

Mixing solid copper, $5\%$ vinegar, and hydrogen peroxide ($\ce{H2O2}$) causes copper acetate to form. The process will occur very slowly without hydrogen peroxide. Adding $\ce{H2O2}$ speeds the ...
14
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6answers
49k 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 ...
21
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3answers
7k views

Why does meltwater taste different?

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 ...
23
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1answer
5k views

How does oobleck work?

Oobleck is basically a mixture of cornstarch and water. It has the interesting property of going hard when pressure is applied. For example, it feels like a liquid when you swirl your fingers through ...
24
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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), NaCl, ...