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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3
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1answer
85 views

Function of water and the need of two barrels in a biogas Generator

For my chemistry assignment, I have to build a biogas generator. I found the following diagram, This is the website that the image is from: http://www.motherearthnews.com/renewable-energy/other-...
4
votes
1answer
255 views

The safety of homemade slime

Disclaimer: I am not a chemist, but I figured this may be the place to ask. So, recently, there has been a lot of news going around about the homemade slime burning a child's hands and I got curious ...
4
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0answers
456 views

Why does the open circuit voltage of a battery decrease with increase in pH of electrolyte, but the voltage across a load increase?

I tested a cell which had aluminum sulfate as its anode electrolyte (12 grams aluminum in 50 mL water and a pH of 3.2), and potassium hydroxide as the cathode electrolyte (5 grams of KOH in 200 g of ...
3
votes
1answer
354 views

How to measure/know the moles of carbon dioxide (as dry ice) when in KOH solution

I am doing an experiment where I am dropping dry ice in a $\ce{KOH}$ solution. I want to know how I can figure out how many moles of $\ce{CO2}$ reacted with the $\ce{KOH}$. I am pouring $25 \,\mathrm{...
4
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0answers
984 views

Home science optical absorption test for approximate caffeine quantity in coffee?

I started with How can you measure the caffeine content of a liquid at home? in the cooking stackexchange, but the test strips were only qualitative (yes/no) and don't seem to exist anymore, and the ...
1
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1answer
89 views

Reacting carbon dioxide with magnesium in ribbon form

My experiment involves a reaction of magnesium in ribbon form with that of carbon dioxide. I know that the product shall be magnesium oxide (white powder) and carbon (black powder) but I do not know ...
2
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1answer
2k views

Will adding apple cider vinegar to freshly pressed fruit juice preserve it

Would adding apple cider vinegar to freshly cold pressed fruit juice be able to preserve the fruit juice and extend its shelf life? Would the juice change into vinegar with time?
8
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1answer
1k views

Chemical reaction in homemade deodorant

Which ingredients in my homemade deodorant recipe are causing it to froth and overflow its container? Is there something I can add to stop this reaction? Ingredients: Magnesium oil (made from ...
6
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3answers
885 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: ...
25
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2answers
6k 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 ...
2
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2answers
837 views

Is home synthesis of cellulose acetate possible, and why?

Is it remotely possible to synthesize detectable quantities of cellulose acetate from materials available in common department stores (such as cotton balls, vinegar, and battery acid) and using tools ...
0
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1answer
1k views

What caused this reaction between chlorine and brake fluid?

I recently saw a video on Facebook of a couple of people pouring brake fluid into a bottle containing pool chemicals (chlorine pellets, I believe). Now this was a rather strong exothermic reaction, ...
1
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1answer
45 views

Why green leaf turns brown in Brine solution?

I immersed a semi dry green leaf in glass of concentrated NaCl solution . I left it in mild sunlight for around 3 hours . Solution before was clear but afterwards it became reddish brown and the color ...
1
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0answers
48 views

Is it a good idea to build a small scale ozone AOP reactor in my garage?

I have some interesting findings from my work (no conflict of interest), and I have been thinking to build an ozone lab in my garage to verify my ideas. What safety issues should I be aware of? The ...
0
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1answer
676 views

Copper Sulfate Pentahydrate experiment, help please?

My science project specifies me to make seed crystals of copper sulfate. We must use the powder form to make seeds. There are two types of copper sulfate pentahydrate; one is granular form (small ...
10
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1answer
402 views

Seashell and grape juice

My daughter is working on a 5th grade science fair experiment. She soaked white seashells in various drinkable liquids to test the effects of those liquids on teeth (teeth are represented by ...
1
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1answer
102 views

making patinas for copper

Copper nitrate, calcium carbonate and ammonium chloride mixed will patina copper green. I need to know If calcium carbonate should be a heavy powder or a reagent. If calcium chloride is a dehydrate ...
2
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0answers
317 views

Unknown white stuff from eggshell reaction with acids and bases

I have just finished some experiment at home using tea eggs. First I peel off the shell of the tea egg and place it in a bowl of white vinegar (of course, I consumed the rest of the egg). Not ...
2
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1answer
195 views

How to create 1-100 ppm ethanol gas?

I am trying to use TGS 2602 sensor of air contaminants. I would like to test if my circuit is working as intended. For that purpose I need to generate fumes of one of the gases the can be detected by ...
1
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1answer
642 views

Neutralising sulfuric acid but not boric acid

I have another question here which refers to me asking how to separate boric acid from other compounds, and this is partially a follow-up. Suppose I was to go down the route of making boric acid by ...
6
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2answers
8k views

What reactions occur when mixing copper sulfate and sodium hydroxide?

I tried reacting copper sulfate with sodium hydroxide to get copper hydroxide, which should precipitate, according to the following equation: $$\ce{2NaOH + CuSO4 -> Cu(OH)2(s) + Na2SO4}$$ I ...
4
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1answer
234 views

How is solid PVA filament (for 3D printing) synthesized?

Polyvinyl alcohol (PVA; also referred to as: PVOH, PVAl) filament--the sacrificial support polymer filament used in 3D printing, how is that made? All the reactions I've seen that make PVA create a ...
0
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1answer
121 views

Unknown salt formed from electrolysis of urine

I am not sure what I was expecting to happen with this but I created a circuit to electrolyze various household liquids. My electrodes are copper — or at least claim to be, I think they might just be ...
2
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0answers
233 views

Starch gelatinization, retrogradation and disgestability

Over on the sub-reddit on prebiotics we're a bit stumped on figuring out the process for turning raw potato starch (mainly containing R2 resistant starch) into R3 via retrogradation/gelatinization. ...
0
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2answers
320 views

Simple experiment to do at home that involves acids and bases? [closed]

so long story short I am in the IB Diploma and I am required to come up with an experiment to investigate pretty much anything to do with chemistry. I'm thinking about doing mine on investigating how ...
2
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0answers
213 views

Processing Chitosan from Crab Shell

I am trying to extract chitosan from crab shell (Japanese snow crab). I want to dissolve chitosan in water and mix in gelatin to obtain some type of gel, that I would then test for my Master 2 ...
14
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1answer
497 views

How to make Poinsettia pigment into ink?

Like many families, this winter we had bought a red poinsettia plant to decorate our kitchen, and now that it's losing its leaves, I had the genius idea to extract the red pigment. The activity proved ...
4
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1answer
174 views

What home products are reactive with glass?

Glass seems to be one of the most stable solid substances - which chemicals, particularly home products that react with glass?
1
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1answer
65 views

Which chemical reaction to use to remove carbon/peat from sieved earth/gravel?

I produce gravel for my aquarium by sieving and rinsing earth from my garden. After boiling and disinfecting it (with a solution against parasites) the rest of the organic material are composted or ...
0
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2answers
120 views

How was the bottle crushed by air?

In this video, a water bottle is shown to be crushed by the surrounding air. My understanding: When the person pours cold water over the bottle which has hot water inside it, the hot water produces ...
-5
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1answer
3k views

What is the chemical process which causes paints to dry? [closed]

How does paint dry? What is the chemical process?
2
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1answer
4k views

What chemical reactions take place when mixing baking soda with citric acid and epsom salt and putting it into a microwave oven?

When I mixed in a bowl baking soda, citric acid and Epsom salt, then put it in the microwave between 30-60 seconds, the mixture will start to fizz and puff up, kind of like dough rising. What is ...
4
votes
1answer
107 views

What kind of string to use for the ice fishing experiment for kids?

Classic ice fishing experiment for kids. I used nylon because I saw it in a stationery, and apparently that doesn't work because I guess it's too slippery. I tried thread from my mom's sewing kit, ...
3
votes
1answer
395 views

Schweizer's reagent from/with CuO?

While attempting to make Schweizer's reagent in household conditions, using $\ce{CuSO4 + NaOH + 25\% NH4OH}$ route (all at least 95% pure, either technical or lab grade purity), I've stumbled upon a ...
0
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1answer
813 views

Does limonene react with calcium hydroxide or acetic acid?

I can't find the results of too many experiments with Limonene. Which has many uses (e.g. making soap). I'm curious of the results of combining Limonene and Calcium Hydroxide (Lime) in one ...
1
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1answer
40 views

Plant Coloration Stabilizer

Question What chemical is used to stabilize berry juices used as wood stains? Aim & tries I am trying to make a stain for a snowboard design and coloration of the wood. I used pure pokeberry ...
1
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0answers
43 views

Blue flashes in rum during fermentation [closed]

While fermenting my rum wort (what rum is called before it is distilled) in a plastic fermentation barrel, I noticed little blue flashes appearing over the surface of the liquid. Any idea what could ...
0
votes
1answer
30 views

How do I build a home-made apparatus for identifying what minerals are present in water?

While there are many readily available kits in the commercial market for testing the type of minerals present in water, is there a way we can build one at home? I am ready to spend some bucks on ...
2
votes
0answers
370 views

Smoke Bomb with Potassium Nitrate and Sucrose (Or is it caramel?) [closed]

I've scoured the internet for a proper chemical reaction between caramelized sucrose and Potassium Nitrate for the past few days. So far, every chemical reaction I see drawn out is between pure ...
1
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0answers
48 views

Magnetically separating H2 and O2 in a volume of gas [duplicate]

I'm using a method of electrolysis where the anode and cathode are in close proximity (~0.7mm) and therefore the separate collection of H2 from the cathode is very difficult. Since O2 is paramagnetic ...
3
votes
2answers
181 views

Can I make a container of (kind of) perpetually boiling water?

It's a common school experiment to make water boil at room temperature by putting it in a container and reducing pressure. I am wondering if it is possible to make a sealed sphere containing water ...
4
votes
1answer
597 views

Reason for endothermic nature of NaHCO3 + C2H4O2 reaction

Why is the classic baking soda and vinegar reaction endothermic? Here are some possible answers I've come up with: The dissolution of the sodium acetate absorbs energy, The release of the carbon ...
0
votes
1answer
831 views

Nickel plating with nickel acetate, nickel chloride, sulfur, saccharin and coumarin

I am a hobbyist trying to learn/apply a nickel electroplating process that I can safely do at my shop. My substrate is a machinable non-stainless steel with unknown carbon content, and I'm looking to ...
-1
votes
1answer
37 views

What gas expands most in a vacuum?

Layman here. I need a gas that occupies the most volume under the least pressure. I am trying to design a water-conservation toilet. i.e- using grey-water from the tub to fill a tank above the ...
5
votes
3answers
641 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 ...
22
votes
1answer
2k views

How can I safely handle a concentrated (fuming) nitric acid spill?

I will shortly be using $90~\%$ or higher concentration nitric acid in a home environment for the purpose of decapping ICs. I understand the corrosive dangers of nitric acid, and most of the important ...
1
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0answers
63 views

Jamming Theory or DLVO Theory for Oobleck

After doing some research I came across two theories that explain the shear thickening effect of Oobleck. The DLVO theory which involves the suspension of molecules via two opposing forces [...
5
votes
1answer
82 views

I suspended iodine over steel nails. What are these droplets that formed?

I suspended about 15g of iodine crystals over a couple of nails to see how quickly they would begin to rust. After a week, these droplets had formed. When prodded they broke apart like water drops. ...
2
votes
1answer
243 views

Peculiar behaviour of tea boiling as milk+Water

While making tea last night I forgot all about it and left the kitchen. When I did remember about it, I ran back and I was surprised to see that it was still in the vessel (though it formed a peculiar ...
-3
votes
1answer
120 views

What would happen to feces when set on fire?

What would happen, if, under safe conditions, I took my feces, doused it with lighter fluid, and set it on fire? What the neck would burn? And what would be left? What if I threw in some wood twigs?