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.

Filter by
Sorted by
Tagged with
2
votes
1answer
41 views

What are we seeing in this AC salt-water copper-wire experiment?

There's a highly watched video on YouTube by "ElectroBoom" on the effects of passing AC (not DC) current through salt water. The water gets cloudy and at the end of the video we can see one of the ...
0
votes
0answers
85 views

Why does copper jewelry & wire smell bad - even when I'm not wearing it?

I make jewelry by weaving a frame from copper wire for a gemstone, then making copper coils or spirals, etc for further decoration. Even 'on the roll', the copper wire smells bad - and the smell ...
6
votes
1answer
91 views

Are electronic descalers a scam?

It seems there are some electronic kits sold around nowadays by major retailers (e.g., Home Depot and Amazon) claimed to remove built-up scale from water pipes. But, do they actually work? If so, ...
1
vote
2answers
180 views

What is the best way to calculate the mass percentage of Calcium Carbonate from water?

Where I live it's believed that local tap water is really bad for drinking because of the amount of limestone. As a science experiment for school I wanted to approximately calculate the percentage of ...
0
votes
0answers
263 views

Melting point in hydrocarbons

Checking out the molecular structure and the melting points of various hydrocarbons I concluded: 1)branching increases the melting point of a hydrocarbon molecule 2)symmetry increases the melting ...
1
vote
1answer
41 views

What is the platinum doing in a Zippo hand warmer?

My Zippo hand warmer requires lighter fluid, platinum catalytic burner, and a heat source to start the flameless catalytic process. What is the platinum doing in this reaction?
0
votes
0answers
26 views

Which is the more effective home insecticide? Boric acid or borax?

I recall my late father introducing me to one of either boric acid or borax... as a relatively low human toxicity very effective insecticide. The thing is, I cannot remember which chemical my father ...
26
votes
2answers
3k views

Is honey really a supersaturated solution? Does heating to un-crystalize redissolve it or melt it?

In the SciShow video Honey: Bacteria's Worst Enemy after about 00:30 the narrator says: Honey is only about 17% water. Most, but not all of what remains is sugar....
2
votes
0answers
78 views

Mechanism for removal of pesticides from fruit by sodium bicarbonate

When Googling around for methods to remove pesticides from fruits and vegetables, a study commonly referred to from some news sites (e.g. here and here ) is one where soaking apples in a sodium ...
1
vote
1answer
31 views

Hardened polyurethane remover

I've looked at the MSDS of a couple of products for removing hardened polyurethane (PU) foam. Both contained only ethanolamine as a dangerous substance, but only between 1-5%. So I'm guessing this ...
0
votes
0answers
28 views

Chemical formula [duplicate]

My textbook says the chemical formula of Bleaching powder is $\ce{Ca(OCl)Cl}$. But according to Wikipedia, the chemical formula is $\ce{Ca(OCl)2}$. Between these two formulas, there's an oxygen atom ...
1
vote
1answer
48 views

Substitute molten salt bath with temperature range from 400–500 °C

I'm looking for a suitable substitute for a $\ce{NaNO2/KNO3}$ salt bath (for quite obvious reasons due to the other applications of the latter chemical). The salt mixture needs to have around 400 to ...
1
vote
2answers
67 views

Nail polish chemistry question [closed]

When I read my ingredients on my nail polish remover, it has water as its first ingredient. Why does nail polish have water, yet the warnings still say its flammable?
-1
votes
1answer
44 views

Could you produce drinking water from combustion in a survival situation [closed]

Likewise the title, could you?
1
vote
1answer
104 views

Applications of magnesium sulfate monohydrate MgSO4 · H2O

How is magnesium sulfate monohydrate $\ce{MgSO4 * H2O}$ used for in chemistry and how does it work as a valuable laboratory drying agent? I could not find too much information in my book or the ...
1
vote
0answers
39 views

Why does coconut oil spoil much faster than groundnut oil?

I have observed that various foods cooked using coconut oil spoil much faster than foods cooked using groundnut oil. One good example is Asian coconut milk curry. Even with proper refrigeration, this ...
13
votes
2answers
4k views

Why does ice crack when a drink is poured on it?

I think most people have experienced this, but while pouring a beverage over ice I noticed the ice cracked. Before After My initial thought was that because the beverage has an antifreeze property ...
1
vote
0answers
38 views

What neutralizes the active ingredients (napthalene and/or paradichlorobenzene) in moth balls? [closed]

Question: What is effective in removing residual moth ball smell from inside a car? Issue: We used moth balls in our car to rid it of mice. (Never do this; it does not work.) We removed the moth ...
0
votes
0answers
27 views

Why cant nail polish be used as an acid mask for making a PCB?

In the question: PCB etching with sodium persulfate, permanent markers seem the most used and experimented with. The thickness of nail polish would give more solid planes and traces. Might nail ...
-1
votes
2answers
322 views

Why does MgCl2 become Mg^2+ and Cl^-? [closed]

I'm taking a biology class, and it's one-chapter intro to chemistry chapter had been driving my study group nuts. On a recent quiz, it asked the question: In water, $\ce{MgCl2}$ dissociates into $\...
0
votes
0answers
171 views

Is borax redundant to trisodium phosphate as a cleaner?

I know that trisodium phosphate (TSP) is used as a rinse aid in cleaning solutions, but I have also seen borax as an (alternative?) ingredient as well. Is borax redundant to TSP, in other words, is ...
1
vote
1answer
40 views

Transferring suspended substance from isopropyl alcohol to water?

I have this UV-reactive invisible ink (a clear liquid.) According to the data sheet, it is suspended in an isopropyl alcohol base. Unfortunately, this is terrible for my particular application for two ...
-2
votes
1answer
41 views

Will fruits and vegetables be more oxidized if blended at high speed for a long time or at less rpm for a short period of time? [closed]

Will fruits and vegetables be less oxidized if blended at higher speeds for shorter periods of time, or at lower speeds for longer periods of time? Do the oxidized molecules in vegetable juice ...
0
votes
0answers
45 views

Can a substance be extracted from solution by adding another substance with a higher solubility?

Suppose that I have a substance X dissolved in water. I then add a substance Y to the solution. Substance Y has a higher solubility in water than substance X, and more than enough of substance Y is ...
0
votes
2answers
49 views

what is the exact meaning of oxidation state? [duplicate]

can you mention the concept of oxidation state without its simple definition i-e it is the apparent charge +ve or -ve.....😪 I found these in wikipedia but didn't understand."Conceptually, the ...
2
votes
0answers
464 views

Detecting alkaloids - Dragendorff's reagent

I am writing a book and as part of the plot one of the characters has a plant that contains alkaloids in tincture form. They want to do a test to detect for the alkaloids so they use the Dragendorff's ...
3
votes
1answer
119 views

Is the flint used in disposable lighters toxic?

Especially the sparks that result when using them. I heard this from a friend and can't seem to find an answer on Google.
1
vote
0answers
49 views

How to make rheoscopic fluid using glycol stearate flakes

Rheoscopic fluid can be made by adding mica powder to water. I read that mica powder can settle and condense after sitting around for a long time. So I want to use glycol stearate flakes instead. ...
3
votes
3answers
5k views

Sugar solutions have a neutral pH in themselves, but it makes your body acidic. Why? [closed]

I'm not an expert, but as far as I understood a sugar solution is completely neutral since sugar can't take hydrogen ions out of the water or donate them in. Sugar is a non ionic compound, so it does ...
2
votes
0answers
30 views

Is there a non toxic moisture indicator that can be applied on a wall?

I am looking for a substance that could serve as an indicator for a risk of mold growth, e.g. by a change of its hue. Cobalt chloride is both irritant and carcinogenic so is not an option. I've found ...
1
vote
0answers
12 views

Another salt-dough question

In January 2017, someone asked how salt dough worked. How does salt dough work?. In the answer it was said that the salt gives toughness. My question is would the size of the salt crystals matter. ...
-1
votes
1answer
214 views

What is PPM in terms of air concentration?

When they say the $\ce{CO2}$ concentration is $\pu{350 ppm}$ what does this actually mean? Does this mean that if we took a sample of air say $\pu{1 m3}$ then $\pu{350 mg}$ of that cubic meter would ...
1
vote
1answer
49 views

Does coffee have the ability to dissolve less sugar into it than water?

Like water can absorb such and such an amount of sugar, can coffee absorb less as it already has coffee in it.
-1
votes
1answer
66 views

Test for the dissolved iron [closed]

Ok there’s this question on my chemistry review that I can’t figure out. It states: A sample of well water is known to contain a high concentration of iron. what solution could you use to test the ...
13
votes
3answers
4k views

Does a smell imply particles or chemicals in the air? [duplicate]

(I know little science so please help me if I'm in the wrong place or if my question needs editing. I could use help with tagging, for example.) If I can smell something then does that mean there are ...
0
votes
0answers
14 views

Chemical interactions occuring when a ball smashes into a wall

I was just wondering. When a hard metal ball smashes into a concrete wall, such as during the tearing down of a building, what are the chemical interactions, in terms of electrostatics, that take ...
0
votes
4answers
159 views

Why is petrol also called octane?

Why do people commonly use octane as a synonym for petrol (gasoline)? Isn't petrol a mixture of hydrocarbon distillates--not a pure substance?
-1
votes
1answer
44 views

Quantity of base needed to neutralise litre of 36% HCl?

Sorry for asking a basic chemistry question. I last did this kind of chemistry at school about 30 years ago and I don't have confidence that I'd get it right from first principles :) Short version: ...
0
votes
1answer
24 views

Apple Cider vs. Cleaning Vinegar

My grandparents stumbled on some cheap Heinz Apple Cider Vinegar while cleaning their house. Ingredients: Made from the juice of apples diluted with water to a uniform pickling and table strength ...
-1
votes
1answer
27 views

Do harsh soaps clean clothing more powerfully? [closed]

My grandparents chanced on some cheap soap in their house while cleaning. They obviously won't use it to shower, but does the abrasiveness mean that they're more potent? To wit, what exactly do the ...
-3
votes
1answer
57 views

I need some help on this Chemistry question can any one help please!! I need to find the cost of a single atom of aluminum [closed]

A 75 ft2 roll of aluminum foil costs $3.79. A 12"x12" pieces has a mass of 1.0 g. How much does a single atom of aluminum cost, in dollars? i need to show all my work i am so lost.
2
votes
3answers
681 views

Aluminium foil on windows: what is the residue, and how to remove it?

I put aluminium foil on some windows' glass pane wetted with plain tap water, as a typical trick to stop sunlight. After 5 days, I removed the foil to find some kind of whitish pattern on the glass. ...
1
vote
0answers
57 views

What governs the amount of smoke produced by an extinguished match?

First Chemistry question, so apologies if this isn't quite in the spirit of this SE. I have noticed that when extinguishing a lit match by blowing it out, the amount of smoke produced can vary widely....
-1
votes
2answers
60 views

Every liquid is water [closed]

Is it that every liquid we see is water, with more or less of x substance? Example: urine is water with salt and minerals
4
votes
1answer
127 views

What component(s) of instant coffee make it deliquescent?

If I put small, separate piles of instant black coffee powder, sugar, powdered creamer, and even something very ionic like table salt out in humid air and come back in a few days, only the instant ...
14
votes
3answers
3k views

Is there such a thing as a “minimal soap” molecule?

Wikipedia's Soap gives sodium stearate as an example of soap, and apparently I've been eating it: Sodium stearate is the sodium salt of stearic acid. This white solid is the most common soap. It is ...
1
vote
2answers
71 views

nickel-copper fabric: shielding viability after being subjected to weathering

I know the solution can be as simple as a well-sealed garbage can, but I am contemplating making a more malleable fabric based faraday-cage-esque contraption. The plan is to use nickle-copper fabric ...
3
votes
0answers
43 views

How to align povidone-iodine molecules in order to look for optical polarization

In this answer I mention how early polarizing filters (e.g. sunglasses) were made by doping a polymer with iodine atoms and then stretching the film to orient the polymer molecules. Electrons donated ...
-2
votes
1answer
65 views

Celsius to Kelvin [closed]

A temperature conversion question asks the following: "The temperature of a sample of a substance changes from 10°C to 20°C. How many Kelvin degrees does the temperature change?" The correct answer ...
-1
votes
2answers
115 views

Why does a balloon filled with helium float if there is so much more air on top of it than below it? [closed]

Also what about Newton's third law? Wouldn't buoyancy be flawed because a balloon also displaces the air that is on top of it thus a downward force?