Applications of chemistry to reagents and reactions of everyday life.

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Black Smoke Produced from Regular Lighter but Not Torch Lighter Applied to Copper

I have a piece of copper mesh from which I would like to remove all coatings/oils. The copper comes from a pot scrubber like this. In order to remove any residue, I held a standard bic lighter up to ...
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1answer
193 views

What is the exothermic reaction of superglue with cardboard?

I glued a sheet of paper to a cardboard package using superglue. To my surprise the paper became very warm. What kind of reaction is it? (The glue in question is labelled with Ethyl ...
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20 views

How do I write the units for this question? [on hold]

The weight of an object is the product of its mass, m, and the acceleration of gravity, g (where g=9.8 m/s^2). If an object’s mass is m=10. kg, what is its weight? Is the answer 9.8 kg*m/s^2 or ...
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1answer
42 views

Why do Diet Coke and Mentos react? [on hold]

Why do Diet Coke and Mentos react which causes the rapid formation of foam? It's because of Aspartame and CO2? A Diet Coke bottle, shortly after Mentos were dropped into it:
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27 views

Retrieving burnt-off marker from tinfoil using chemistry

I was using a furnace-oven (450 C) to remove organic matter from water filters, and the filters were encased in a tinfoil-pocket. However I labelled the tinfoil with a Sharpie marker, and I didn't ...
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1answer
28 views

How to use signicant figures?

I am taking Chemistry and am confused about significant figures. In a teaching video, the teacher showed this math: 22.2 22.2 30.10 30.10 +_____ 104.6 This is, of course, the actual answer, but ...
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46 views

Why do distilled alcoholic beverages taste different from each other?

I was wondering about vodka vs. whiskey mostly. The way I understand it, a distilled beverage is created by heating a non-distilled beverage, say, beer, and then collecting and cooling the vapors. ...
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1answer
137 views

How does mixing lemon juice in hooka water affect the composition of the mixture?

The other day I saw one of my friends, who was mixing lemon juice directly into the flavour chimney (or wind guard) and water pot of hooka. When I asked why are you doing as such, he said that it ...
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30 views

Bicycle tube inflation with 16g CO2 cartridge

How much pressure will a 16 gram cartridge of $\ce{CO2}$ (carbon dioxide) provide in a bicycle tire? Remembering my high school chemistry (forty years ago) and googling, I came up with this answer: ...
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60 views

About all the pop drinks being sold

Regarding chemical synergies I read if someone ingests various product with sodium benzoate (forgive spelling) like the MANY soft drinks that exist ; AND if one has had some quantity of vitamin C ...
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295 views

What are these crystals on my champagne cork?

I opened up a bottle of champagne that was left in a wine cooler for approx. 8 years. To my astonishment there were small crystals at the underside of the cork. The crystals are colorless, odorless ...
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5k views

Why is the recipe of Coca Cola still a secret?

Why is the recipe for Coca-Cola still a secret? I think that given the current state of technology, it should be proficient enough to find any of the secret ingredients in Coca Cola. Any thoughts? ...
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1answer
131 views

How dangerous is taking a bath in Coca Cola?

What can be the effects for the body to be immersed in Coca Cola for a while? A friend commented me that the coke is quite acidic (pH 2.5 if I recall properly), and we were guessing what could be the ...
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1answer
28 views

Aerobic respiration to produce water [closed]

Could the aerobic respiration reaction occur outside the body to produce water? If it is possible how would it occur
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43 views

Psychoactive ingredients in this soap?

Could any ingredients from this product be psychoactive in some people, if the are sensitive to them? https://www.lush.co.uk/products/honey-i-washed-kids I have found the product to be relaxing as ...
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1answer
30 views

What is the liquid used in instant shoe shiner?

What is the liquid used in instant shoe shiner products? Ive tried refilling it with WD-40 but I would like to know if there are any cheap alternatives to refill it?
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1answer
24 views

Cows Milk Protein In Lactose

Does anyone know if the Casein/Whey Cows Milk Protein can be found within processed lactose ? Some background to this is our 4 month old baby was given teething granules. She was then presented with ...
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37 views

Why no thermal expansion for camping tents?

I know that solid materials expand when heated, which is called thermal expansion. But what is happening to tent square or tent canvas of (plastic?) camping tents? I have noticed, that during the ...
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28 views

Ethyl alcohols use on polycarbonate and acrylics

I have an interesting question about the use of ethyl alcohol on polycarbonate windshields. I have had friends asking me about the use of Pledge Multi-Surface cleaner on their windshields. Some ...
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1answer
48 views

Calculation of mass from mmol/L

Sorry I understand this looks like a "homework question", (I'm actually a 46yr old dentist looking to see what amount of calcium phosphate should be effective in a proprietary toothpaste!). However, ...
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1answer
569 views

Does ice melt faster when submerged in water?

Suppose you have a container with a drain at the bottom full of frozen H2O which you leave a room temperature to melt. Will the ice melt faster if you drain the water as it melts? I would expect that ...
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44 views

Are homemade batteries a practical alternative during a blackout?

If your home lost power without warning; are homemade batteries (such as the lemon/potato variety described in this question Are homemade batteries economically practical?) a practical alternative for ...
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2answers
347 views

Are homemade batteries economically practical?

Every kid who has been to a science fair knows that you can make a battery with a lemon, a potato, a penny and a nail. I've never done this and I'm not entirely clear on how it works beyond a hazy ...
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1answer
26 views

Which azo compounds are found in DVD-R and CD-R media?

Does anyone know which specific azo compounds are used in DVD-R/CD-R recordable media?
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22 views

Chemistry of Walter Mitty's negative developer/stop bath/fixer?

I asked a question here How can Walter Mitty examine the negatives of photos in the bright sunny day? Commonly known, there are three steps using chemical baths to bring out the images of negatives: ...
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30 views

can sodium persulfate etch or damage a titanium heater?

I use Sodium Persulfate to etch copper on a PCB process. I have been using glass heater on the etching tank but the glass is too fragile; it breaks too easily. I read that titanium heater is used ...
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38 views

Are there any hazardous products that would come from mixing glass cleaner with lubricant?

Are there any known safety issues if you mix: Mr.Muscle glass cleaner GT85 spray lubricant
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36 views

What is the chemistry of this household cleaning recipe?

What would be the product if baking soda and common salt and vinegar are added together?
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15 views

Are salt substitutes good alternatives to sodium chloride?

I bought a low salt Ketchup from Heinz and it says it uses 'ALSOSALT' substitute ( potassium chloride). It says it does have 5mg. of sodium. Is potassium chloride (with possible additives) a good ...
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76 views

Why do other sugars melt whereas sucrose decomposes?

Sucrose decomposes at 186°C. It doesn't melt but when it reaches decomposition temperature, sucrose decomposes into fructose and glucose. After cooling and hardening it is no longer sucrose. Am I ...
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1answer
60 views

Is it possible to remove salt from food without changing the flavor?

I love soup, even a thick soup for dinner, yet many soup products have 400 to 1000 mg of sodium in them. Is there a simple chemical procedure any consumer could do to take the sodium out of the ...
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1answer
67 views

How could household vinegar create a salt on car carpet?

I am not a chemist! My chemistry classes from my molecular biology undergrad are far behind me. But I think I created a salt, and I don't know how. Here is my mystery: I recently got some water in my ...
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2answers
78 views

If salt crystals make a cube shape, what is this 'X' marking?

I am an amateur, with very little professional chemistry knowledge. I was doing a demonstration / experiment with my 6 year old child. We took very warm normal tap water, and dissolved into it a ...
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32 views

Thermal Decomposition of metal oxides

Does thermal decomposition of metal oxides always produces oxygen?
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29 views

Recipe for paper glue

I need to produce paper bags. Is there any simple receipt for making paper glue so that brown (packaging) paper will stick to itself?
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26 views

How to dissolve grass/leaves without affecting enclosure?

I've got two questions: What sort of compound can dissolve grass/leaves fastest without leaving "much" trace? What sort of enclosure is required for this to be doen safely and without damaging the ...
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2answers
245 views

Why does pasta really boil over?

I was making pasta, and I noticed the pasta boiling over. I thought about it some more, and I realized I had no idea why this was happening. When the lid is on, the foam rises. When the lid is off, ...
3
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1answer
34 views

How do erasable pens work?

I understand the principle behind an eraseable pencil. Graphite is highly slippery, you rub it onto the paper, and an eraser can rub it off again. I've had friends at school with 'eraseable ink ...
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2answers
55 views

How does a simple alkaline battery work?

The basic + - electrolyte set up. Modern batteries and the like. How exactly do they work?
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43 views

How does hydrogen gas build up in hot water lines?

Recently I was reading through the owner's manual of a washing machine; notably, the warnings in the front of the booklet. One warning stood out to me; it said that if the hot water in your house has ...
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0answers
25 views

ice cream float - what causes it? [duplicate]

When you mix ice cream and a soft drink (like coke,) a reaction happens that creates a thick foam. I am assuming the foam id composed of carbon dioxide gas and milk curd, which is produced by the ...
2
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2answers
33 views

How many mL of solution will result when 15.0 g of H₂SO₄ is dissolved to make a 0.200 M solution?

How many $\mathrm{mL}$ of solution will result when $15.0~\mathrm{g}$ of $\ce{H2SO4}$ is dissolved to make a $0.200~\mathrm{M}$ solution? Here's what I have so far: First, I converted ...
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79 views

Which electrodes do not corrode at all?

I had used spare pieces of metal to perform electrolysis. They all had the disadvantage that they corrode when used as anode - and some of the oxides are toxic (copper, chromium). I've found that ...
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1answer
22 views

Loading nickel metal hydride battery for the first time

I just bought a new hair clipper and I was about to start shaving my head when I noticed that it was almost at 0%. It has a nickel metal hydride battery. The manual says I have to load it for 24h ...
0
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52 views

What the balanced chemical equation for the conversion of starch to dextrin by dry heating?

This question is related to the toasting of bread. When we toast a slice of bread, the starch in it breaks down into dextrin. I want to know the balanced chemical equation for the process.
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75 views

Real life chemistry question

My freshwater fish tank has a pH of 5.8 and a KH value in excess of 40 or 720+ppm while still maintaining a water hardness of 20 ppm or GH< 1 now I am a math/phsyics student but I have taken both ...
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46 views

From liquid to solid by beating

I understand how liquids can become solids by decreasing temperature. To my understanding this is because the molecules slow down and are able to form bonds. However, I'm having problems ...
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56 views

What's a natural substitute for baking powder or baking soda?

What's a natural substitute for baking power or baking soda? I am doing a project where I need a raising agent in liquid form. Naturally, I can't use anything carbonated so baking powder/soda are out ...
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1answer
31 views

Do various soaps work better when dissolved/used in different water temperatures?

My wife and I have had an ongoing argument about various cleaning agents, and I wanted to get a Chemists' view on it. When we are doing laundry, she will generally clean using the cold water setting ...
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1answer
55 views

Does a patina on a knife prevent rust?

Before I begin, I think it's worth mentioning that I know little about chemistry and even less about knives. My question is this, having seen many people talk about how patinas work and the best ...