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
0 answers
18 views

Does Glycerol-sawdust mixture stick to the bottom when you heat it in a pot?

When glycerol and sawdust of a ratio 8:1 are heated in a high-pressure cooker on a hot plate at 120°C for 2 h, will the mixture stick to and blacken at the bottom of the cooker?
3 votes
2 answers
7k views

Glass with a low melting point?

What kind of glass can I purchase that will melt in a Bunsen burner flame? Is there any way to treat glass such that the melting point is lowered? I tried adding some sodium hydroxide but the glass ...
-1 votes
0 answers
25 views

Common Ion Effect - Cl- disappeared more than it existed

I had an experiment of Common Ion Effect I have dissolved 35.92g of NaCl(s) in 100ml water (which is saturated) And I have added 10ml of 12.0M HCl. I have checked NaCl was precipitated. NaCl was 0.614 ...
4 votes
2 answers
45k 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 votes
1 answer
55 views

About whitish layer that formed on chocolate bar

I noticed a whitish layer on the surface of a chocolate bar that I ate yesterday. I looked at the pack where it was mentioned that, "Temperature and humidity changes may cause product to develop ...
0 votes
1 answer
87 views

Testing whether an unknown powder is wheat gluten (at home)?

Last week, I ordered wheat gluten to make seitan. I received some powder and attempted a recipe, which mixes 100g of water with 100g of gluten to form a sticky dough. However in my case, I only got a ...
4 votes
0 answers
2k views

How to break down soap and detergents?

I am building a greywater harvesting system. It is a 3-stage system: The 1st stage breaks down soap and detergents. The 2nd stage filters the water. The 3rd stage pumps water out of system. What ...
0 votes
1 answer
50 views

How to measure heat transfer and heat dissipation in a kitchen?

I am a chemistry beginner just starting to coming to grips with stoves and Bunsen burners. I would like to know, what kind of instrument can I use to measure the amount of heat transferred from a ...
2 votes
2 answers
9k views

Is styrofoam soluble in gasoline or paint thinner?

Why doesn't gasoline or paint thinner melt through Styrofoam when I try it yet there are videos of others melting Styrofoam in gasoline and paint thinner? Is there something I am doing wrong? This is ...
7 votes
1 answer
4k views

Creating resilient (non-brittle non-water-soluble) verdigris (blue-green copper patina)

First off, I checked and there are indeed a number of questions on copper patinas, but none which deal with resilience. Context I own a number of copper writing utensils, which I'd like to get a nice ...
2 votes
1 answer
364 views

Looking for a compound that when mixed with sugar will burn when a drop of water is added

Years ago, I watched a Johnny Carson episode where a guest on the show mixed a compound with ordinary table sugar and added a drop of water and the mixture burst into flames. I went and bought the ...
3 votes
0 answers
84 views

Why is my Briggs-Rauscher reaction not oscillating?

I have been trying to run the Briggs-Rauscher reaction following this guide, which is pretty similar to other guides out there, yet the reaction is failing to not only oscillate, but display any color ...
12 votes
2 answers
1k views

Looking for an old (1950s) "chemical experiments" book

Not sure if this is precisely on-topic, but I'll risk some reputation and give it a try. I got a chemistry set as a kid in the early 1970s, and the subject really captured my interest. I grabbed ...
3 votes
3 answers
2k views

Why is my sodium acetate not resulting in any crystals?

My son received a chemistry set for Christmas and we've been working through the experiments over the last few weeks. One of them involves boiling white vinegar and adding baking soda to produce ...
-2 votes
1 answer
76 views

Small (personal) scale sea salt production?

I was looking to try to make a small setup for producing small amounts of sea salt. Ideally a series of evaporation chambers, with a heavy brine as the finished product, that could then be baked. May ...
4 votes
3 answers
9k 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 ...
23 votes
2 answers
14k views

Why does meltwater taste different? [duplicate]

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 ...
1 vote
2 answers
2k views

Can hydrogen and oxygen gasses be turned back into water?

I electrolized water today, and got hydrogen. And I have a bottle of oxygen. Can I combine those to get myself water? I know $\ce{H2O}$ is super pure water, but I just want to try. Is this too idiotic ...
4 votes
1 answer
12k views

How much CO2 is produced in burning of a candle?

I've been reading this book, page 149. In chapter 15 the following experiment is suggested, Fix a candle in a container. Fill the container with water. Light the candle and then cover it with an ...
0 votes
0 answers
467 views

Weight Ratio vs Molar Ratio - Chloramines

I'm working with a delicate experiment whilst trying to test corrosion of stainless-steels in a chloramine environment. I've run into various literature that discusses the formation of different types ...
1 vote
0 answers
110 views

How to clean naphtha of non-saponifiable fats

My dad has been using naphtha to degrease some animal bones, which based on the MSDS is probably some random jumble of hydrocarbons, mostly heptanes. He's trying to be environmentally friendly so he ...
-3 votes
1 answer
75 views

Is the gas produced by boiling bioethanol safe?

As part of a small experiment, I'd like to boil bioethanol (I believe it should boil at 80 degrees). Would the resultant gas be safe (to humans)? Presumably it would be quite flammable? In small ...
2 votes
2 answers
2k 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 ...
3 votes
2 answers
1k views

Thickening and/or slowing evaporation of IPA-based ink

The conundrum I have a security printing ink that I make by adding an IR-absorbing dye to a 50/50 mix of Isopropyl Alcohol and distilled water. The ink solution is pale green but dries virtually ...
2 votes
1 answer
9k views

Equation for the reaction of iodide to iodine using hydrogen peroxide under acidic conditions?

I'm building a home lab around All Lab, No Lecture Illustrated Guide to Home Chemistry Experiments and I'd like to understand the chemistry that I'm doing a bit better. For example, here's an iodine ...
0 votes
0 answers
196 views

How to achieve highest CO2 pressure from acetic acid + sodium bicarbonate reaction?

I'm planning to make a high-end vinegar + baking soda rocket and started doing some researches for the best ratio of the reagents's concentrations to achieve maximum pressure. Furthermore, I know that ...
0 votes
0 answers
49 views

Problematic Menshutkin reaction

I'm quite new to organic chemistry and want to try menshutkin reaction. Like the reaction in an attachment. I use that recipe: I do everything in a 60ml beaker. I dissolve 18 mmol of pyridine in 35 ml ...
-2 votes
1 answer
90 views

Why my mineral water from different sources do not mixed well? [closed]

Background: In 8 hours range, I have bought cold mineral water (brand A), then refill the plastic bottle with cold mineral water (brand B) from my office. As far i know, brand B has high pH while ...
2 votes
0 answers
1k views

What chemicals are in hard wood ash? (Making lye)

I am trying to make lye or potassium hydroxide. So far I have been leaching ashes in a barrel for a few days. I decided to do some tests on the water to see if it was working. My pH paper said it was ...
2 votes
1 answer
391 views

How do I get calcium citrate to precipitate in experiment on extraction of citric acid from juice?

I was planning to extract citric acid from mango juice by first using Aspergillus niger fungus by fermentation to convert the mango juice to citric acid, then extracting by first adding sodium ...
9 votes
1 answer
299 views

What acid did I accidentally create, and how?

So, I wasn't trying to do a chemistry experiment this evening; it was entirely unintentional! I was mixing up a batch of fertilizer for my plants (no nitrates involved, so I wasn't worried about ...
10 votes
3 answers
11k views

Is there an easy way to test for the amount of iron (Fe) in water?

I have a rusty metal rainwater tank, and I'd like to find the amount of iron in the water. (The water I've collected is perfectly clear.) How would chemists in the 1800's have gone about this? What ...
1 vote
0 answers
451 views

What is an effective preservative for guar gum slime?

I am attempting to find an effective preservative for guar gum slime. I am using typical recipes: A borax solution of 4%, a guar gum solution of 5% using distilled water, and a mix ratio of 20:1 (guar ...
0 votes
0 answers
401 views

What happens when you run house electricity through salt water?

What happens when you run house electricity (120VAC) through salt water? (with standard copper wires!) Well, in https://youtu.be/dcrY59nGxBg , an interesting experiment was conducted to find out! At ...
0 votes
0 answers
136 views

Safely dilute this 35% hydrogen peroxide solution to 3% and store after opening (no stabilizer)?

The problem: eating yellow curry with naan and no spoon for the first time resulted in a wonderful dinner but some permanent yellow stain on my cotton shirt. I assume it's coming at least in part from ...
-2 votes
2 answers
1k views

Influence of (activated) charcoal on water's pH

Does immersing (a) charcoal / (b) activated charcoal (both clean, no ash) into distillate water influences water's pH? If yes - in which direction - acidic or alkaline? If there is an influence - is ...
5 votes
3 answers
5k 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 ...
7 votes
1 answer
2k 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 ...
2 votes
1 answer
2k views

Experiment to crush soda can by air pressure

You put a can with water at its base on a hot plate and allow the water to heat. Once steam is visible from the opening on top of the can, you quickly flip the can upside down into a bowl of water ...
15 votes
2 answers
3k views

Are children's sparklers based on a magnesium reaction?

We were letting our kids play with sparklers on New Year's Eve, and my friend's son asked his Dad: What would happen if we threw the sparkler into the water? Would it keep burning under water. My ...
9 votes
1 answer
3k views

Why does my sand dissolve in citric acid?

I soaked and washed white Darice decorative sand in distilled water. I added food-grade citric acid to different distilled water, then I sprinkled in a few grains of the sand. The sand bubbled and ...
8 votes
1 answer
1k views

The open circuit voltage of a battery: Does it decrease with increase in pH of electrolyte while the voltage across a load increase?

Why does the open circuit voltage of a battery decrease with increase in $\mathrm{pH}$ of electrolyte, but the voltage across a load increase? I tested a cell which had aluminum sulfate as its anode ...
0 votes
1 answer
295 views

Oxidation and Polymerization of drying oils

I am having trouble understanding the relationship between polymerization and oxidation of drying oils, specifically linseed oil used for fine art. In refining my own oil by filtering it then leaving ...
0 votes
1 answer
495 views

Removing diamonds from a 14 karat gold ring with acid

I have a 14 karat gold ring with diamonds. I want to weaken the metal (to get the diamonds out without damaging them). If I dip the ring in sulfuric acid, will I be able to dissolve the base metal in ...
3 votes
1 answer
2k views

What happens to potassium iodide in the "elephant Toothpaste" reaction?

General Questions on "Elephant Toothpaste" Equations: 1)$\ce{~2H2O2(aq)->2H2O(l) + O2(g)}$ Context: I have a few questions on the reaction commonly referred to as "Elephant Toothpaste". You ...
13 votes
1 answer
8k views

How to make pyramid-shaped NaCl salt crystals

I'm attempting to make sea salt pyramids like the one below. I understand this needs to be evaporated at a reasonable speed to stop the crystals forming a cube, as the when formed quickly, the edges ...
1 vote
0 answers
45 views

Is 25% aqueous ammonia solution considerably less safe than concentrated HCl

I plan to sterilize and clean some deer bones for display in my amateur chemical lab. The needed concentration of ammonia is only about 2,5% but it would be significantly cheaper to buy more ...
1 vote
0 answers
79 views

Possible experimental errors and how to improve them

I'm doing an experiment at home where I determine the relative atomic mass of magnesium by collecting the hydrogen produced from its reaction with hydrochloric acid. I ended up getting around 26, but ...
1 vote
0 answers
39 views

How can I safely recreate the "oxiclean effect" for a video production?

I am producing a parody infomercial, specifically copying the style of the early 90's OxiClean/Billy Mays spots: https://www.youtube.com/watch?v=ZTpXh33Mbeg As it happens in the original commercial, ...
3 votes
2 answers
871 views

How can I test for impurities in my steel wool?

I am trying to purify ferrous sulfate (for some electroplating experiments) and I came up with the following process: Dissolve 200g of iron fertilizer in 300ml of distilled water heated to 54 °C (...

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