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Elements and Compounds

Questions about the properties and characteristics of elements as observed in nature and in compounds. Chemical formulas are also converted to and from symbols in covalent or ionic bonds. All the questions you want to ask about the elements and the compounds they form.

500 Questions

What happen when we put flame in the ethanol?

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When flame is applied to ethanol (C2H5OH), it undergoes combustion, a chemical reaction where it reacts with oxygen (O2) in the air to produce carbon dioxide (CO2), water (H2O), and heat. The balanced chemical equation for the combustion of ethanol is:

C2H5OH + 3O2 → 2CO2 + 3H2O

In this reaction, the ethanol molecule breaks apart, and its carbon and hydrogen atoms combine with oxygen atoms from the air to form carbon dioxide and water vapor, respectively. This reaction releases a significant amount of heat energy, which is why ethanol is used as a fuel in alcohol burners, stoves, and engines.

When you observe a flame applied to ethanol, you will see a blue-colored flame, indicating complete combustion. The heat produced by the combustion of ethanol can be used for various purposes, such as heating, cooking, or powering engines.

Iron 3 hydroxide formula?

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Fe(OH)3

What is the formula for reduced iron?

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The chemical formula for reduced iron depends on the oxidation state of iron. In its reduced form, iron typically exists as ferrous ions (Fe^2+). Therefore, the chemical formula for reduced iron is simply Fe^2+.

However, if you're referring to a specific compound containing reduced iron, such as ferrous sulfate (FeSO4) or ferrous gluconate (Fe(C6H11O7)2), then the formula would be different depending on the specific compound.

Can you mix oil and ethanol?

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Yes, we can mix oil and ethanol. This is because oil can dissolve in ethanol.

What are the three types of solutions?

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1. Gaseous Solution- includes gases or vapors dissolved in one another. Two or more gases can form a solution. Air is an example of a gaseous solution. When dry is made up of oxygen gas dissolved in nitrogen gas.

2. Liquid Solution- contain a liquid solvent in which gas, liquid, or solid is dissolved. Water is the most common liquid solution. Many things can be dissolved in it. Table salt is an example of a solid dissolved in a liquid. A liquid and a gas can also be dissolved in a liquid solution.

3. Solid Solution- is a mixture of solids spread equally throughout one another. Metal is an example of a solid solution at room temperature.

How many electrons does the element Sodium have?

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As the elemental metal sodium has 11 (eleven) electrons; the same number as the protons, and the atomic no.(Z).

However, sodium will readily lose one(1) electron to form the sodium cation (Na^(+)) .

When it is the sodium cation it has 11 protons, but only 10 electrons.

What are compounds combined with the element sulfur?

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SO2 = Sulphur dioxide

SO3 = Sulphur trioxide

H2SO3 = Sulphurous acid

H2SO4 = Sulphuric Acid

H2S = Hydrogen sulphide.

CH3CH2SH = Ethanthiol ( The sulphur equivalent of ethanol).

The insulin molecule in the himan organism has a R-S-S-R bridge.

FeS = Iron sulphide.

There are thousands more sulphur (compounds) molecules. . The above is just a selection.

How many grams of oxygen does 0.5g of sulfur react with?

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Firdt oh all qrite down the balanced reaction equation.

S(s) + O2(g) = SO2(g)

Note all the molar Ratios are 1:1 ::1

Next calculate the moles of sulphur

moles(S) = 0.5 / 32 = 0.015625 moles. (Equivalent to '1' ratio).

Moles(O2) = 0.015625 ( Equivalenbt to '1' ratio).

Hence mass of oxygen is

mass(g) = moles X Mr

Me( Relative Molecular Mass) of oxygen (O2) is 16 X 2 = 32

Hence mass = 0.015625 X 32 = 0.5 g (mass of oxygen(O2) required).

Is H2O a radical?

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H2O is the chemical formula of water.

What do you call carbon dioxide and sulfur dioxide?

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They are both acidic gases. Reason, when dissolved in water they form carbonic acid(H2CO3) and sulphurous acid(H2SO3)

What type of compound is sodium chlorine?

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No such compound as Sodium Chlorine. If you mean sodium chloride, then it is an IONIC Crystalline compound.

Is copper a product or a reactant?

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For copper, it is an element. It could be both reactant and product. While purifying copper will be the product. But copper would be the reactant in case of preparing hydrogen or copper sulphate salts.

How many atoms does NaCl2 share?

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No such substance as 'NaCl2'. However, NaCl (sodium chloride or common table salt) has two atoms viz. 1 x sodium(Na) and 1 x chlorine(Cl).

What compound forms phosphorus?

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No compound forms phosphorus. Phosphorus is an element in its own right, and found in the Periodic Table.

Phosphorus is a constituent element in such compounds as phosphorus oxide, phosphoric acid.

What is Ca C2H3O2 2?

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Assuming that what the questioner meant (but perhaps did not have sufficient typing flexibility to write) was actually Ca(C2H3O2)2, the chemical name is "calcium acetate" or "calcium ethanoate".

What are Building blocks of life hydrogen oxygen nitrogen?

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Most of the early molecules play a critical role in living organisms, but the primary three building blocks are carbon, hydrogen, and oxygen (the essential components of a carbohydrate). Nitrogen is a necessary component for life as well, but it's primary use is held to be for the proper usage of the body's electrical discharges (the reason why nitroglycerine is used for people with heart troubles)

Is AgNo3 a medal or non medal?

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First of all , I think you mean AgNO3 , which is Silver Nitrate.

It is NOT a medal/metal .

It is a chemical salt, composed of the nitrate anion (from nitric acid) and the silver cation ( from ??? silver oxide).

IS SO2 soluble or insoluble in water?

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SO2 dissolve well in water.The product formed is H2SO3.

What element are sand and quartz made from?

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Both sand and quartz have the elements silicon and oxygen.

It is a crystalline structure.

The crystalline structures of sand and quartz are slightly different.

What element is quartz made out of?

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It is made from two (2) elements viz. Silicon and oxygen.

Where can brimstone commonly be found?

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Brimstone (burn stone) is also known as "Sulphur" and occurs naturally as a pure element - sulphide. It can commonly found as a by product of removing unwanted sulphur contaminants from natural gas and petroleum.

Can you feel hydrogen?

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I don't think it is possible to feel hydrogen.