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
34 views

Consumer choice; harmful environmental aspects of polyethylene vs polypropylene [closed]

What is the difference between polyethylene and polypropylene in terms of their aspects which are harmful to the environment during manufacture and disposal.
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0answers
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What kind of chemical reaction happens when combining Tahini and Date syrup?

While both Tahini and Date syrup are quite thin, when mixed together they form a paste-like substance that is very delicious, and quite thick. But what kind of chemical reaction leads to such sudden ...
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1answer
2k views

Using a gas stove instead of Bunsen burner for a flame test?

In all chemistry labs we use the Bunsen burner. What's the difference between it and a good old gas stove used in home? Can the stove also be used to get positive flame tests for some cations (like $\...
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1answer
33 views

How does energy and speed affect sub-atomic particles (protons, neutrons, electrons) in an electric field [closed]

(Source: https://gyazo.com/a4d5beed3272a7ca793dd8e2f7e8be3c) I am having trouble understanding the problem above. Why does it matter if the particles are held at constant energy or speed? How does ...
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1answer
91 views

What (simple) household chemicals react with oxygen?

I'm interested in making a small "preservation chamber" that I can basically use to store objects without the presence of oxygen. I have a resealable stainless steel canister and the plan is pretty ...
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1answer
174 views

Electrolytes are ionic compounds that conduct electricity [closed]

Electrolytes are ionic compounds that conduct electricity, or the flow of charged particles, when dissolved in water. This occurs via the separated ions acting as those charged particles, or charge ...
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1answer
92 views

When a solution is diluted, the number of moles of the solute decreases. what would happen to the molarity? [closed]

When a solution is diluted, the number of moles of the solute decreases, so the molarity decreases??
2
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1answer
353 views

When it rains, it puddles. Spilled salt cycles between wet and dry with humidity. Is this akin to a phase change?

I have some spilled un-iodized table salt (NaCl). It is very humid where I live, and when it gets very humid for a few days, the salt absorbs so much water that it becomes a puddle of (probably) ...
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1answer
40 views

Formaldehyde safety levels

I've obtained a simple air quality analyzer which measures several items, formaldehyde concentration among them. While I cannot vouch for its correctness, I found the values measured during the last ...
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0answers
28 views

Sound or light reversible super glue possible?

Sorry if this is a stupid question and help me to improve it. Super glue is meant to be quick and mostly universal but we can stick to ceramics and/ or wood. Imagine you put parts with the glue ...
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0answers
277 views

Why chewing gum gets hardened after drinking water

Basic question, please don't say temperature change, because i've tried, and it never gets back to same elasticity! There must be some other chemistry at work. Even with luke warm water or room ...
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2answers
2k views

Does the main washing effect of soap come from foam?

I am curious if the main cleaning effect of soap comes from its foam (or, maybe, it is just a by-product). Here are some points, that might clarify what I mean: Does foam sort of "carry" dirt and ...
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3answers
101 views

What defines a discharged battery?

In the case of an AA Alkaline battery, what actually happens inside the battery once it is fully discharged? What components of the battery change as we use it?
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1answer
83 views

Definition of ionisation energy

My lecturer has defined ionization energy or ionization potential of a species A as the molar internal energy change, ΔU, for the reaction: $\ce{A (g) -> A+ (g) + e-}$ at $\pu{0 K}$, with reactants ...
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0answers
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Adding apple cider vinegar to a solid DIY deodorant

If I wanted to add a bit of apple cider vinegar to my oil based deodorant, to increase antimicrobial properties, would this cause me to need a preservative? My deodorant is not water based, so I don't ...
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2answers
164 views

Scientific Reason for Salt Solution Gaining Volume

A little background to this question: my mom placed a glass with salt and enough water to just cover the salt in a room to "absorb negative energy" out of the room at her office. It obviously "worked"....
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1answer
81 views

Is it safe to boil carbonated water in a kettle? [closed]

Isn't it dangerous to boil carbonated water in a kettle? Whenever I boil water in my kettle, I close its lid. Does this close lid constitute 'under pressure' (and so danger) emboldened beneath? ...
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2answers
372 views

What happens when mixing elemental mercury with sodium hypochlorite solution [closed]

Say you spilled elemental mercury from a thermometer and used household bleach on it, what would be the reaction if any?
8
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1answer
237 views

Sunglasses that darken in sunlight

I have seen several of my (rich) friends and teachers having glasses that are colorless indoors, but take up a darker shade when exposed to sunlight. Upon searching for the chemistry of this, I did ...
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1answer
85 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 ...
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1answer
133 views

Anhydrous magnesium sulfate to replace epsom salt?

Can anhydrous magnesium sulfate be used instead of epsom salt for feeding plants? Do hydrates and anhydrous salts become the same when dissolved in water?
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0answers
158 views

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

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 ...
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1answer
318 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, ...
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2answers
534 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 ...
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0answers
835 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 ...
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1answer
135 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?
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2answers
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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. ...
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0answers
157 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 ...
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1answer
78 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 ...
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1answer
60 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 ...
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2answers
79 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?
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1answer
82 views

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

Likewise the title, could you?
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1answer
156 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 ...
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0answers
84 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 ...
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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 ...
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0answers
54 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 ...
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32 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 ...
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2answers
1k 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 $\...
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1answer
91 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 ...
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1answer
49 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 ...
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0answers
62 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 ...
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2answers
291 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 ...
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0answers
774 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 ...
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1answer
895 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.
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0answers
91 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. ...
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3answers
8k 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 ...
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0answers
34 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 ...
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0answers
17 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. ...
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1answer
1k 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 ...
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1answer
53 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.

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