Elements and Compounds

Two: Hydrogen and Oxygen.

When hydrogen peroxide reacts with catalase, an enzyme found in cells, it breaks down the hydrogen peroxide into water and oxygen gas. The oxygen gas is produced in the form of bubbles due to the rapid release of oxygen gas during the decomposition reaction. This reaction is catalyzed by catalase, which helps speed up the decomposition of hydrogen peroxide into water and oxygen.

When fluorine reacts with potassium chloride, a single displacement reaction occurs. The more reactive element, fluorine, replaces the less reactive element, chlorine, in the compound. This results in the formation of potassium fluoride and the release of chlorine gas. The reaction can be represented by the chemical equation: 2KCl + F2 -> 2KF + Cl2.

Well, darling, ferrous sulfate is about 20% elemental iron. So, in 325 mg of ferrous sulfate, you're looking at roughly 65 mg of actual iron. Just pop that pill and let it work its magic, honey.

Well, when it comes to extinguishing white phosphorus, it's important to remember that it can be quite dangerous. The best way to deal with it is by using a non-flammable substance like sand or dirt to smother the flames. Remember to stay safe and always seek help from trained professionals if needed.

Oh, dude, carbon dioxide doesn't actually have an odor. It's like the silent but deadly type, you know? You can't smell it creeping up on you, but it's there, just chilling in the air. So, no need to worry about sniffing out carbon dioxide, it's basically scent-free.

Millions of atoms.!!!!!

However, I think you misunderstand. !!!

Lead is an element, found in the Periodic Table as 'Pb' (Plumbum ; Latin for Lead).

Any one atom of this element contains protons, neutrons and electrons.

It contains

82 protons,

125 neutrons

82 electrons.

Its Atomic No, (Z) is 82 ( = to the number of protons)

Its Atomic Mass is 207 ( 82 + 125 = 207)

NB One mole of any element (lead included) contains 6.022 x 10^(23) atoms. (602,200,000,000,000,000,000,000 atoms).

The mass/weight of one mole is 207 grams.

it is same as ammonium sulphate, (NH4)2SO4

As given in the question, it is two separate elements.

However, the two elements do combine to form the compound 'Calcium oxide', with the formula ' CaO'.

CaO ( calcium oxide) is commonly known as 'Lime/Quicklime').

The elemental symbol for fluorine is 'F'.

However, like all other gases , except the noble gases, it exists as a diatomic molecule. ; 'F2'.

Well, honey, when iodine is heated, it undergoes sublimation, meaning it goes from a solid directly to a gas without melting into a liquid first. So, technically, the equation for this process is just I2 (s) → I2 (g). Short and sweet, just like me.

No, Indium was not discovered in India. Indium is a chemical element with the symbol In and atomic number 49. It was first discovered in 1863 by German chemists Ferdinand Reich and Hieronymous Theodor Richter in Freiberg, Germany. The name "indium" refers to the indigo blue line in its spectrum.

Well, darling, those nitrogen-fixing bacteria are the real MVPs when it comes to converting nitrogen into a form us humans can actually use. They work their magic in the soil, taking that atmospheric nitrogen and transforming it into a more accessible form for plants to slurp up. So, next time you enjoy some tasty veggies, just remember to thank those little bacteria for doing all the hard work behind the scenes.

Brine is a homogeneous mixture. It is composed of water and salt (sodium chloride) that are evenly distributed throughout the solution at a molecular level. A compound is a substance made up of two or more elements chemically bonded together, while an element is a pure substance made up of only one type of atom.

Oh, dude, like, technically speaking, argotypoline isn't a real thing. It sounds like something you'd find in a sci-fi movie or a made-up chemical compound. So, if you're planning on using it in your next experiment or trying to impress someone at a party, maybe stick to real elements like carbon or hydrogen.

Well, isn't that just a happy little question! Iodine has a smell because it easily turns into a gas at room temperature, releasing tiny particles that we can smell. Just like how we can enjoy the scent of flowers in a meadow, iodine shares its unique fragrance with us all. It's all part of the wonderful symphony of nature around us.

The earthworm would take in the copper and arsenic from the soil. The blackbird would eat it then the sparrowhawk would eat the blackbird. This may result with the sparrowhawk still having the copper and arsenic inside it. :)

Depending on the Quantity of ethyl acetate, use a DESSICATOR.

In the bottom of the dessicator place a crucible of phosphorus pentoxide put in the perforated separating try. In another crucible put in the 'wet' ethyl acetate', on top of the separating try.

Using silicon grease, grease the edges of the dessicator bowl and the dessictor lid. Place the lid on the bowl so that it snugly fits. The dessicotor lid should have an evacuation value, to which attached a gas tight, but flexible hose, and the other end to the evacuation pump.

Turmn the pump on and leave for say 24 hours. , until the phosphorus pentoxide goes black. This should dry out the ethyl acetate, suitabloe for IR or nmr analysis.

Another way, is to put the sample in a 'Muffle Furnace' at about 95 oC. However, this might thermally decompose the ethyl acetate.

NB To dispose of the phosphorus pentoxide safely, slowly place spatula amounts in flowing cold water.

NNB Whilst phosphorus pentoxide is NOT a salt, it will absorb water.

A salt to try is anhydrous calcium chloride.

Yes, phosphate contributes a negative charge in biological systems because it has a total charge of -3 due to its three oxygen atoms each carrying a negative charge. This negative charge is important for the structure and function of molecules like nucleic acids and ATP in cells.

Hydrogen it the first element in the Periodic Table.

So it has Atomic No. of '1'.

For its most common isotope it has an atomic mass of '1'.

Hydrogen exists as three isotopes'-

#1 ; protium ; Atomic mass '1' ; 1 proton, 0 neutrons, 1 electron

#2 ; deuterium ; Atomic mass '2' ; 1 proton, 1 neutron, 1 electron.

#3 ' tritium; Atomic Mass '3'; 1 proton, 2 neutrons, 1 electron.

protium is the most common isotopes of hydrogen mass of '1' ( 1 + 0 = 1)

deuterium is less common and is known as 'heavy hydrogen' mass '2' (1+1=2)

tritium is rare and is radio-active, and known as 'super heavy hydrogen' (1 + 2 =3) mass '3'.

P-block elements can be metals, metalloids, or nonmetals whiles S-block elements are all metals. P-block elements can be either gases or solids while S-block are all solids. and each P-block elements displays a greater range of properties.

Nitrogen is a gas and is typically a poor conductor of electricity. This is because it is a diatomic molecule with a stable covalent bond, which does not easily allow the flow of electric current. In order for nitrogen to conduct electricity, it would need to be ionized or undergo a chemical reaction to create charged particles that can carry the electric current.

Oh, dude, converting sodium from milligrams to millimoles is like converting apples to oranges, but with science! So, first, you gotta know the molar mass of sodium (like 23 g/mol). Then, divide the amount in milligrams by the molar mass to get it in millimoles. Easy peasy, lemon squeezy!

Yes, molten NaCl (sodium chloride) is conducting electricity. When solid NaCl is melted, the ionic bonds between sodium and chloride ions are broken, allowing the ions to move freely in the liquid. These mobile charged particles can carry an electric current, making molten NaCl a conductor of electricity.

The chemical formula of common salt, also known as table salt, is NaCl. This formula represents the compound's composition, with Na symbolizing sodium and Cl representing chlorine. Sodium and chlorine ions are held together in a 1:1 ratio by ionic bonds to form the salt crystal lattice structure.