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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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what is the difference between oxidation state, charge and valency? [duplicate]

Is there any specific atom or compound or molecule possessing oxidation state different from charge and valency, so that we can clearly understand the difference between the three.
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0answers
33 views

Safe liquid with a boiling point > 275F

Is there a non toxic inexpensive liquid which can be safely heated to 275F without worry of it combusting? It would be used to apply heat to PVC to soften it for forming. Perhaps propolyne glycol?
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28 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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0answers
14 views

Is magnesite's sequestration of CO2 a chemical or physical change and why [closed]

It's all in the title. Please explain thoroughly
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1answer
29 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
24 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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0answers
25 views

How to “clean” gold from laser engraving?

I have a decorative object (think home furnishing) that is gilded or plated with a thin layer of 24 K gold. On the gold surface there is a text engraved, coloured black, using laser. I want to "...
3
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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 ...
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0answers
27 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
10 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
26 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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0answers
31 views

What is DNA Concentration?

Watching The "Making a Murderer" documentary an analytical chemist claimed they found .14 nano grams per microliter on a car key. What exactly do they mean by stating it this way? Why wouldn't they ...
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1answer
36 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 ...
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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 ...
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0answers
13 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 ...
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1answer
26 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: ...
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1answer
16 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 ...
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1answer
23 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 ...
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1answer
37 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.
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3answers
65 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. ...
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0answers
52 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....
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2answers
47 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
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1answer
69 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 ...
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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 ...
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2answers
62 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 ...
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0answers
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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 ...
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1answer
45 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 ...
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2answers
55 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?
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1answer
38 views

Diluting topical cream (10%)

I need to dilute a face cream with 10 % active ingredient to 2.5 % and 5 % but I am confused as to how. I looked into the $$c_1V_1=c_2V_2$$ and $$\text{concentration of a solution}=(\text{amount of ...
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1answer
51 views

Why was lime used by the Nazi's?

I am reading a book (Into That Darkness) about the Nazis, where there is the following passage: causing unimaginable suffering to the deportees who were either left waiting, naked and without food ...
0
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1answer
51 views

Aluminum and aluminum oxide

I have a new grain mill that I am hesitant to use because the rollers are anodized aluminum. As I understand it the anodized aluminum is actually aluminum oxide and supposedly non-toxic. I realize ...
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1answer
34 views

Function of 'organic' vs regular pipe cleaner

Recently, I needed to buy some pipe cleaner, as sometimes even with care hair and other detritus gets lodged so deep down the shower drain that it is not possible to get it out. I always try to avoid/...
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0answers
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Mixing dilute hydrochloric acid and battery acid

I was doing an experiment on gold recovery. When I added some gold platted pins to battery acid nothing seemed to happen.I impatiently added some duluted hydrochloric acid labeled 20%, immediately ...
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2answers
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Materials used in cooktop heating element, and reason for black appearance

I have been interested in the structure of heating elements/coils used in cooktops. I am referring to something such as in the following picture: I have a cooktop at home with such elements, and at ...
4
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1answer
104 views

Is flour or baking soda really suitable for extinguishing grease fires?

I think most have heard the advise that you should put flour (or baking soda) on a grease fire to absorb the oil before. While this is certainly better than using water, I'm skeptical. For starters ...
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1answer
63 views

What is a “tri-salt polymer” as described by this product that eliminates and prevents mold?

This answer mentions an anti-mold product called Concrobium Mold Control. The FAQ linked on their website says: Q: I see Sodium Carbonate listed on the label. Is Concrobium Mold Control just Sodium ...
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1answer
154 views

Can superglue (cyanoacrylite) be thinned with acetone and still harden?

I'm looking for something with an extremely low viscosity to use as a binder for cold casting iron oxide with very fine detail (it's to make a slotted winding core for an electric motor with $\pu{1mm}$...
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2answers
1k views

Why does lavender oil dissolve plastic?

A few weeks ago I decided to harvest the lavender in my garden and put it through a still to extract the essential oils. The still in question is essentially just an air cooled condenser. I collected ...
3
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1answer
941 views

Full equation when using vinegar, hydrogen peroxide, and salt to etch copper

What is the full chemical equation when you use the following reactants to etch copper: vinegar / acetic acid (5%) $\ce{CH3COOH (aq)}$ hydrogen peroxide (3%) $\ce{H2O2 (aq)}$ salt $\ce{NaCl (s)}$ ...
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1answer
64 views

Is sodium “also known to turn purple and combust (like lithium),” when exposed to water?

I understand that indicator solutions can change color depending on pH, but the following statements in the Phys.org article Super cheap earth element to advance new battery tech to the industry has ...
2
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1answer
47 views

What chemicals are often confused for different chemicals? [closed]

Recently I asked a similar question on Chinese SE: Why would Antimony (Sb) and Aluminum (Al) be confused? It seems, though, that this is by no means a Chinese phenomenon. The Wiki page for Tin ...
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1answer
29 views

Compensating for hardness in aqueous NaOH solution?

I'm trying to strip the seasoning (polymerized oil) off a carbon steel skillet. Following online instructions, I've prepared a lye solution, using tap water, 2.5% concentration by weight, which ought ...
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3answers
179 views

Can 32% hydrochloric acid be stored in a milk jug (HDPE)?

Can $32\%$ ($20$-degree Baume) hydrochloric acid (typically found as 'muriatic acid' in hardware stores) be stored in a milk jug? I have read that acids can be safely stored in polyethylene bottles. ...
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2answers
57 views

How to purify sodium chloride table salt that contains sodium ferrocyanide

I wish to obtain pure sodium chloride crystals from ordinary table salt. But all proprietary table salts seem to contain the anti-caking agent sodium ferrocyanide which I should like to remove.
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2answers
105 views

Why is cooking not potentially lethal? [closed]

Even the simplest ingredients used in cooking, such as a banana, contain hundreds of chemical compounds. When we cook we mix several of these ingredients and apply heat, which makes a perfect ...
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1answer
397 views

Rules of naming ionic compounds

While brushing up on my Chemistry basics, I came across a topic about naming ionic compounds. It is a question regarding Roman numerals. It says "Roman numerals should not be included in the name ...
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1answer
199 views

Classification of the Inside of a Grapefruit

In the text Chemistry: The Central Science, the inside of a grapefruit is classified as a homogeneous mixture. Unless I’m missing something, to me it would be a heterogenous mixture owing to pulp, ...
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1answer
68 views

Is *rinsing* (after washing) with cold water is as efficient as rinsing with hot water?

Let say I have, a dishwashing soap, plenty of cold water (5 °C) and only have 2 L of hot water (60 °C) to clean a t-shirt with oil stains. Should I use the 2 L to wash the t-shirt and then the cold ...
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1answer
28 views

Effervescent in mineral spirits?

I'm shooting video of paint moving in mineral spirits. To make for a little more action, is there a household granular/solid I could add to the mineral spirits that would gently effervesce ala alka-...