Applications of chemistry to reagents and reactions of everyday life. This tag should not be applied to questions which are just about simple chemistry but it is specific to questions about chemistry in an out-of-laboratory or commonplace context.

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1answer
23 views

Small spills not dealt with [on hold]

What residues are left when drops of sulphuric acid are left to evaporate on a bench?
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0answers
10 views

Can I remove sugar from soda using microfiltration (using gelatin)

Basically will the sugar molecules be left behind in the filtration process I'm looking into this method for naturally and safely flavoring vape juice (sugar would burn on the coils) if not do you ...
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0answers
15 views

What are some of the gases that due to their high compressibility are used in hospitals and our homes? [on hold]

What are some of the gases that due to their high compressibility are used in hospitals and our homes ?
3
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1answer
35 views

On what principle do electric alcohol detectors work?

I know that normal alcohol detectors work on the principle that potassium dichromate oxidizes alcohol . On what principle does an electric alcohol detector work?
2
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1answer
44 views

Why should animal fats not be used for cooking? [on hold]

Why we are advised not to use animal fats for cooking oils? I know that vegetable oil contain long unsaturated carbon chains and animals contain saturated carbon chains. What’s the difference if we ...
0
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1answer
30 views

Determine volume of Methane used to heat x water to x degrees?

I have 126.39L of water, what volume of methane gas would i need to combust to heat it (at room temp, 21 degrees Celsius) to 38 Degrees Celsius? How much CO2 gas would be produced? I calculated the ...
3
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1answer
27 views

Decreasing Powder Size

I have a small amount of a powder that is roughly 100 microns but I need to get it down to less than 10 microns. It is a small amount so I can't send it to any factory specializing in that as far as I ...
3
votes
2answers
51 views

How can I keep homemade laundry detergent from disassociating?

We've been using this recipe http://goo.gl/MjNQ3s to make laundry detergent. Works fine, but after a few days it disassociates into a clear bottom layer and a pink top layer. It's mildly annoying ...
3
votes
1answer
34 views

Reaction between lye and water?

I am planning on making some homemade soap soon and have read online that breathing in the fume generated from the reaction between lye and water is not recommended because it is "hazardous." I am a ...
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0answers
27 views

Battery from copper, aluminum, etc

Could copper (from household wiring), aluminum (from a soda-pop can),, carbon (from wood charcoal), and crushed limestone be used to make a battery of sorts? Thanks, Misha
-1
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0answers
26 views

Finding Oxidation numbers

Can someone tell me the concept for finding oxidation numbers? For example, NF3 nitrogen trifluoride how would one find the oxidation numbers for nitrogen and fluoride in that molecule ? I know it ...
1
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1answer
29 views

Can I use the mono ammonium phosphate found in fire extinguishers to make crystals? [closed]

I recently opened up a old decompressed fire extinguisher out of curiosity. After some research I discovered that the dry powder inside, mono ammonium phosphate, can be used to make beautiful crystals....
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0answers
11 views

Ester foam insert and isopropyl alcohol

I recently purchased a used set of lens for my telescope. They came in a nice aluminum case with foam inserts, but the foam has an odor. I am currently using just the sun to try to rid the foam of the ...
0
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1answer
38 views

Boric acid ant poison

I made an ant poison using boric acid and peanut butter for grease eating ants. They eat the peanut butter (mixed with some olive oil to get it closer to a liquid), but I see a white residue (...
7
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3answers
1k views

Is the behavior of a dilute strong acid the same as the behavior of a weak acid?

My assumption is yes, as the $\mathrm{pH}$ levels of each will be similar and thus they have the same acidity. Is this correct or am I missing something?
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0answers
16 views

Covalent bond and ions? [duplicate]

Are atoms in a covalent bond ions? For example water, does oxygen become the 0 2- anion or is this not correct to say since a covalent bond refers to the sharing on electrons? Im assuming atoms are ...
0
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0answers
28 views

When are Atoms Considered Ions [duplicate]

When are atoms considered ions? For example, $\ce{NaCl}$ is obviously an ionic compound as it made up of $\ce{Na+}$ and $\ce{Cl-}$. But in compounds which have covalent bonds such as water, is it ...
1
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0answers
42 views

What are these fluffy white crystals growing out of my floor tiles?

Does anyone know what these white crystals are? As you an see they are growing out of some floor tiling in my house. They have been appearing for some years now out of the floor, which is cleaned ...
-5
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1answer
41 views

Can we safely consume ions?

When we drink salt water, we are consuming the sodium and chloride ions, right? We can't consume elemental sodium as it's highly reactive but the consumption of its ions seems to be fine. Does that ...
0
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1answer
32 views

Baking soda & magnesium chloride reactions

Woke to this interesting reaction. Would love any explanation of this occurrence. If it is perfectly common then I apologize for my ignorance. The mag was trace in the clear glass suspended over the ...
0
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1answer
35 views

How do Shaving Creams, Foams, Soaps ensure cut Hair Fragments that stick & clump between Safety Razor blades are easily washed away?

PS: This is my first post on Chemistry SE & I figure it's pretty Chemical oriented. http://sustainability.stackexchange.com/questions/5325/organic-natural-maybe-edible-alternatives-for-pre-...
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2answers
74 views

What happens to gasoline when it lands on your hand?

So, I was filling the mower with gasoline and some gas well on my hand. Not even 2 seconds later it is gone... 1) Does gasoline turn into vapor that fast? And if it does, why doesn't it evaporate in ...
1
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0answers
19 views

A material that could stick to almost anything? [closed]

I am looking for a material that could easily stick to any surface on impact and also detach easily. The Reason: I am making a machine for my first year Mechanical Engg. project that would throw ...
0
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0answers
27 views

What is the name of the crinkly plastic used in clear parts of envelopes?

I've always wondered what it is, as it makes a lot of noise on being deformed. No other common plastic that I've come across has quite the same properties.
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2answers
48 views

Why do sealed plastic bottles of pop collapse as the contents get old?

A number of bottles of pop (two varieties) in unopened plastic bottles have sat for a few years in a room-temperature environment. All of the bottles have now collapsed a certain amount (all to about ...
3
votes
1answer
67 views

How does a fire start?

I know that fire in a few words is the exothermic reaction of a fuel with an oxidizing agent, but I can't fully understand what exactly happens to piece of wood when it is ignited. How do molecules ...
0
votes
1answer
55 views

Ions and bonding

I am currently learning about ions and I am a bit confused about the bonding part. I understand that if an atom has an 'unstable' amount of electrons (like 2 electrons, then 8, then 4) that it can '...
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0answers
30 views

Powdering aluminum chemically?

I need a fine aluminum powder for many reactions/experiments. Could I dissolve the metal in an acid and then drop it out of solution using a base, or vice-versa? What would be the best chemicals/...
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2answers
59 views

Diffusion Phenomena : Why does diffusion occur?

Why do things diffuse that is why do they go from a place of higher concentration to a place of lower concentration?
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1answer
29 views

What would make tracing paper clear?

This isn't much of a "chemistry" question, but this is the only category where I can get answer based on science. I already tried soaking it in cooking oil, which did not work (it only made the ...
3
votes
1answer
35 views

Removing aluminum “corrosion?”

I have some aluminum alloy, possibly 6063 or 7050 (no clue really) which has corroded. The finish might be silver-anodized but I doubt it due to the high polish, could be urethane. The item is a ...
0
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2answers
24 views

How semi-permanent hair dye stays in place?

Semi-permanent hair dye washes off after several months. What mechanism(s) keep the dye in the hair? (I assume it's not primary chemical bonds, otherwise it would be permanent)
8
votes
1answer
104 views

Why is charcoal useful as a fuel compared to wood? Don't we lose energy by making it?

Charcoal is produced by partially burning wood. However, as the wood is burned, some of its energy is lost. Why is it that charcoal is still preferred as a fuel instead of wood in many cases? Doesn't ...
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0answers
57 views

Crusty white armpit stain that can't be removed by washing

Some of my t-shirts (the ones that are 100% cotton) started developing this strange armpit stain: it makes the fabric feel brittle and crusty around it; it can't be washed off with water and ...
3
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0answers
43 views

Sand Under Pool Turned Gold in Color

I'm removing an above-ground chlorine pool installed years ago by a previous owner of my house. Looking underneath the pool, I found that the sand on which it's resting is a gold/bronze color with a ...
5
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1answer
1k views

How could we figure out the recipe of Coca Cola? [duplicate]

I know that the ingredients and the manufacturing process are both important, as discussed in this question. What would be a modern approach to figuring out the ingredients? The ingredients listed ...
3
votes
1answer
31 views

Water conditioning with a descaler?

Products known as “descalers” are said by the manufacturers (such as this one) to use electrical impulses to transform calcium bicarbonate (which builds up in pipes and water-using appliances, causing ...
10
votes
1answer
237 views

Are modern newspaper inks a health risk?

It's very common in India to see newspapers being used to absorb oils from oily snacks, or simply for temporary food packaging. Some articles say that covering food items in newspaper is a health risk....
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0answers
19 views

Krown Rust Protection/RustCheck - Soluble in?

This is a very practical question in nature and not meant to need a tremendously technical explanation. As a little background, I work as a auto detailer and have yet to find something to easily ...
8
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1answer
98 views

What causes metallic objects to ring?

If I use a iron rod to hit a 3" × 12" iron plate there is the distinct sound of a metallic ring. What is the cause of this distinct sound? Is it the crystal structure of iron or that iron is a ...
22
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2answers
5k views

Why isn't ethane used for cooking?

We commonly use methane and propane for cooking (and home heating), but not ethane. I would expect ethane to be suitable for this, being in between the two, but I've never heard of anyone using it for ...
0
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0answers
32 views

What is the chemical, which he use for covering the “wooden-comb”?

Many days ago, I have seen this video on YouTube, at here: https://www.youtube.com/watch?v=oRV73gKShto. In this video, he dropped the "wooden-comb" into a bowl of chemical, for covering it. It seems ...
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votes
1answer
55 views

Anodized Aluminum…danger? [closed]

I recently got an iMac, but have been feeling anxious about using it as the keyboard is made of aluminum as is also the actual computer. the keyboard and computer are made from Anodized aluminum, ...
13
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2answers
4k views

Is poison still poisonous after its 'expiration date'?

As we all know that, Any poison is nothing but a chemical compound. And as discussed in the question: Chemicals-do-have-an-expiry-date! So, my question is: Is poison still poisonous after its '...
1
vote
1answer
64 views

Using baking powder to make baked food crispy

The recipe I use for chicken wings achieves a fried texture by dusting the wings with baking powder and then baking at 220°C (425°F). The chicken is also dusted with salt and other seasonings, ...
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0answers
23 views

To what extent are caramelization products sugars?

Suppose that we are caramelizing sucrose by applying heat. We get what cooks know as "caramel". Wikipedia lists several reaction types happening during caramelization. Obviously, some of them result ...
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0answers
25 views

Using Hydrogen Peroxide to clean toilet

I want to use lysol hydrogen peroxide multipurpose cleaner for cleaning my toilet. Is this a dangerous course of action?
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0answers
10 views

How can I filter amylose and amylopectin out of solution?

So I have a solution of propylene glycol and I want to filter out the amylose and amylopectin with the least actual chemical change needed. The smallest diameter of the amylopectin molecules (19 ...
1
vote
1answer
65 views

How does salt help with −30 °C cold ice?

I know that ice gets colder when salt is added. But how big is the effect if it is already −30 °C? Can it cool it down more or does it just work with −1 °C cold ice? Another question: If I have a ...