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Questions tagged [everyday-chemistry]

Applications of chemistry to reagents, reactions and processes of everyday life. Use this tag for question on chemistry in an out-of-laboratory/class context. DO NOT use this tag merely because the question is about simple chemistry.

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1answer
761 views

Do dishwashing detergent and stain remover powder/stick have the similar ability to remove collar rings?

For yellow rings on shirts caused by skin grease or sweat: Some recommended to use an "Oxyclean" stain remover or stain remover stick for cleaning. Some recommended to use dishwashing detergent to ...
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2answers
178 views

Are words on my T-shirt removable? [closed]

I wonder if the words on my T-shirt are removable? If yes, what kind of (chemical or physical) ways are there? They look like paints on the cloth, as the letter "C" has become blurred in the way ...
15
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1answer
1k views

Does the chemical in an alkaline battery make battery leaks unavoidable?

Battery leaks was an issue in the 80s and 90s, and since quality and innovation is constantly improving, I thought battery leak might be slowly going away. But I found that even nowadays, name brand ...
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2answers
1k views

Good acid for cleaning marine toilets

Problem: On my boat I have a marine toilet. It is operated with salt water. The problem is, on the interior of the outflow tubing it accumulates some sort of hard grime. I am looking for a good way ...
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2answers
2k views

Why do lipids in a cell hydrolyze into glycerol and fatty acids?

Most Lipids in a cell have ester bonds (made up of glycerol and fatty acids). I have learned in my chemistry class that we can hydrolyze an ester by simply adding water to it. $$\ce{CH3COOCH2CH3 + ...
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1answer
1k views

What is the chemical structure of the cocoate ion vs. the olivate ion?

I am wondering how the cocoate ion (in natural soaps, in the form of sodium or potassium cocoate and from the saponification of coconut oil) differs structurally from the olivate ion (from the ...
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3answers
10k views

Copper Chloride: neutralizing and disposal

I plan on etching some PCBs with hydrochloric acid and hydrogen peroxide, which will therefore produce some kind of copper chloride (green color) which is highly toxic if released into the ...
7
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1answer
790 views

What is the molecular structure of the coating on cast iron cookware known as seasoning?

When a piece of cast iron is repeatedly covered in fat and exposed to heat it develops a hard, black, non-stick coating referred to as "seasoning". What exactly is this coating made of molecularly? ...
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3answers
8k views

Diamond filtering - is it real or bogus?

I always hear that some big corporations use "diamond dust" to filter water seven times to make "diamond clear" vodka. I tried googling something about using diamonds for filtering, but I could not ...
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3answers
14k views

What is the effect on humans of using dry ice and liquid nitrogen as food additives?

I have seen on a TV show that some guy uses dry ice (solid $\ce{CO2}$) to make ice cream and on an another TV show, liquid nitrogen ($\ce{N2}$) is used with tequila. Both are edible. I know that ...
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1answer
712 views

How does brewing time and brewing temperature affect the flavonoid concentration of green tea?

I've searched a lot for this, but I still cannot find any good explanations for how these two factors affect flavonoid concentrations.
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1answer
123 views

How do you determine the amount of acrylamide in foods such as baked fries?

There are many food studies which determine the concentration of a substance in a food item. For example, this study determines the concentration of acrylamide in solid foods like fries. By what ...
8
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1answer
946 views

Does borax do anything more for “boosting” detergent than adding active oxygen would?

Borax, $\ce{Na2B4O7}$, is often marketed as a "laundry booster" under the brand "20 Mule Team Borax". The unit crystal of borax can be seen below. Other laundry products in the past have added ...
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4answers
8k views

The mole is used extensively in chemistry, why not elsewhere?

In chemistry, the unit "mole" is used in many places, and is an important tool when working with quantities. I have not seen it used elsewhere--for example, we never count people or TVs with the unit....
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6answers
48k 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 ...
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2answers
6k views

Chemical compounds responsible for the colors in flowers?

I know that anthocyanins are a class of compounds responsible for the purple colors found in flower petals. Anthocyanins (also anthocyans; from Greek: ἀνθός (anthos) = flower + κυανός (kyanos) = ...
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1answer
26k views

How does adding lemon juice to sugar make better caramel?

It's a common cooking advice: if you want a somewhat softer caramel, add some lemon juice to the sugar: To help prevent the caramel from crystallizing, you can add an acid to the sugar before you ...
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1answer
3k views

Hanging a spoon on the face

Well, I have seen many comical acts where people balance a spoon (or a fork) on different parts of the face like on the tip of the nose, forehead etc. The do this by blowing moist air (see below) and ...
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2answers
14k views

Silver and milk (or milk products)

In the title I am refering to silver spoons, which, when used to consume milk products (like yogurt), get a weird taste. It could be described as umami/meaty, a little bit like onions. I came to the ...
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1answer
2k views

What material are heat bags made of?

I just bought a heat bag from store and it has special property. It is made up of transparent plastic bag and transparent unknown liquid inside when sold. There is a tiny circular metal piece in ...
8
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1answer
87 views

Retention of surface texture after combustion

Just some while ago I was burning a box of cardboard in my backyard and I saw a very curious phenomenon. I saw that as the cardboard box started burning it started to curl. Up after a while as I ...
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1answer
3k views

Is soap the natural form of Sodium Lauryl Sulfate?

I was told that "Sodium Tallowate, sodium cocoate and sodium palm kernelate are the 'natural' forms of SLS". Is this true? I thought "natural" SLS would be SLS derived from a natural product such as ...
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1answer
3k views

Why does gum get harder to chew after a while?

My Sister asked me this: "Why is it that when we chew gum, it is soft and mushy to begin with , but slowly gets firmer and firmer like after 20 mins of chewing?" I think it is because when we ...
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2answers
26k views

Why are the majority of cleaning solutions basic?

When testing for pH for common household cleaning products, such as dishwasher fluid, I noticed that majority of them tend to be basic? Why is that? Do acid make good cleaning solutions as well?
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2answers
10k views

Why does activated carbon preferentially adsorb anions?

Brands like Brita and Pur (in the U.S.) have made a name for themselves for the ability of their product (essentially a large-pore filter with activated carbon/charcoal) to extract the added chlorine ...
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2answers
5k views

Not your ordinary hard water deposit

We have a well that delivers hard water and we do not have a water softener. (There was a “green sand filter” that utilizes permanganate to oxidize other metals on the system, but it has been ...
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3answers
19k views

Why does ice cream make soda fizz?

I've noticed that adding a chunk of ice cream to soda makes the soda fizz slightly near the soda-ice cream interface. I thought it was a physical effect due to the temperature, but adding ice has no ...
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1answer
2k views

What's the chemical nature of a dishwasher's rinsing agent?

It seems that a rinsing agent helps the dishes in the dishwasher dry much better than they do without it (which I recently noted on my new dishwasher). What molecules are used in the composition of ...
76
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3answers
3k views

If nothing sticks to Teflon, how does Teflon stick to frying pans?

The most notable characteristic of polytetrafluoroethylene (PTFE, DuPont's Teflon) is that nothing sticks to it. This complete inertness is attributed to the fluorine atoms completely shielding the ...