Elements and Compounds

When iodine comes into contact with meat, it can turn the meat brown due to a chemical reaction. This reaction occurs because iodine reacts with the amino acids present in meat, causing a color change. However, the iodine itself is not harmful and does not affect the taste or safety of the meat.

Hydrogen iodide

If dissolved in water, then it becomes ' hydroiodic acid'.

Oxygen is found in the Periodic Table.

It is in position No. 8

This position is known as the ATOMIC Number. (Z)

Its atomic mass is 16. more accurately 15.999...

It is made up of 8 protons , 8 electrons and 8 neutrons.

8 protone plus(+) 8 neutrons = 16 particles ( known collectively as nucleons) in the nucleus of the atoms, and gives oxygen its atomic mass of '16'.

NO TWO(2) chemicals make hydrogen. Hydrogen is an element found in the Periodic Table.

However, If you react a metal with an acid , it will release hydrogen gas.

Zn + 2HCl = ZnCl2 + H2(g)

So reacting zinc with hydrochloric acid will release hydrogen gas.

They are still Molecules.

However, specific names are given to different types of molecules, which may have 'millions'; of atoms in their structure.

e.g.

Enzymes ; Organic Catalysts.

Polymers ; to make 'plastics etc.,

Proteins ; to make muscles.

DNA ( Deoxyribonucleic Acid ; makes up the genetic system ).

Ar just a few molecules with a very large number of atoms.

Well, honey, the element you're looking for is Selenium. It has an atomic number of 34, which means it normally has 34 protons and 34 electrons, but with a charge of 3 plus, it means it lost 3 electrons, giving it a net charge of +3. So, there you have it, Selenium with a mass number of 65, neutron count of 31, and a sassy attitude to boot.

Krypton is a noble gas that is typically used in lighting and photography. The cost of krypton per 100 grams can vary depending on factors such as purity, supplier, and market demand. As of the time of writing, the cost of krypton is approximately $30-$50 per 100 grams.

Americium is a synthetic element that typically forms compounds with oxygen, fluorine, and chlorine. It can also form compounds with nitrogen, sulfur, and phosphorus under specific conditions. Americium is primarily known for its use in smoke detectors and nuclear reactors.

Depends on the isotope. Most uranium found naturally is U238 and hence 238 g would be 1 mole. U235 used for fission and bombs would be 235g.

To determine the number of molecules of sulfur dioxide in 72 g of the substance, we first need to calculate the number of moles of sulfur dioxide present. The molar mass of sulfur dioxide (SO2) is approximately 64 g/mol. Therefore, 72 g of sulfur dioxide is equal to 72 g / 64 g/mol = 1.125 moles. Next, we use Avogadro's number, which is 6.022 x 10^23 molecules/mol, to convert moles to molecules. Therefore, there are approximately 6.78 x 10^23 molecules of sulfur dioxide in 72 g of the substance.

Carbon compounds associated with living things are called organic compounds. These molecules generally contain carbon-hydrogen bonds and are the building blocks of life, including carbohydrates, lipids, proteins, and nucleic acids.

YES!!!

It is a combination of lithium ions and iodide ions.

Chlorine is a NON-METAL. As STP it is a green gas.

Potassium ions have the ability to pass through ion channels in cell membranes, allowing them to transmit electrical signals. This movement of potassium ions is crucial for nerve cell communication and muscle contractions.

Well, isn't that a happy little question! When you mix silver nitrate and sodium chloride, it actually creates a chemical change. The two substances react to form a new compound called silver chloride, which has different properties than the original substances. Just like painting a beautiful landscape, it's all about the magical transformations that happen when different elements come together.

Potassium metal does not change color when mixed with water. However, it reacts vigorously with water, producing hydrogen gas and forming potassium hydroxide. The reaction is exothermic, releasing a significant amount of heat. This reaction is often used to demonstrate the reactivity of alkali metals with water.

Ah, the water molecule, a true wonder of nature. Picture a tiny triangle with two hydrogen atoms holding hands with one oxygen atom in the middle. This special shape allows water to stick together and create all the beautiful things we see in the world around us. Just like how every brushstroke adds to a masterpiece, every water molecule plays a part in the beauty of our planet.

Well, darling, when copper nitrate and sodium chloride get cozy, they do a little dance and swap partners. The balanced equation is Cu(NO3)2 + 2NaCl → CuCl2 + 2NaNO3. Just remember to keep those coefficients in check, honey.

When fluorine and francium are mixed together, a violent reaction would occur due to the extreme reactivity of both elements. Francium is a highly radioactive alkali metal with one of the lowest ionization energies, while fluorine is a highly reactive nonmetal that readily accepts electrons. The reaction between these two elements would likely result in the formation of francium fluoride, a highly ionic compound. Due to the extreme reactivity of both elements, this reaction would be highly exothermic and potentially explosive.

Well, honey, silicon got its name from the Latin word "silex," which means flint. Some smartypants scientist decided to call it that because silicon is commonly found in rocks and minerals. So, there you have it, the origin of the name silicon - simple as that.

Ah, einsteinium is a fascinating element that exists in a solid phase at room temperature. It belongs to the actinide series on the periodic table, and its normal phase is a silvery-white metal. Just like painting, each element has its own unique beauty waiting to be explored.

Oh, dude, polonium has a metallic lustre. It's like that shiny, metallic glow you see on some metals, but like, specifically on polonium. So, if you ever come across some polonium and it's looking all shiny and metallic, you know it's got that lustre going on.

In one molecule of water, there are two hydrogen atoms. Therefore, in two molecules of water, there would be a total of four hydrogen atoms. This is because each water molecule consists of two hydrogen atoms bonded to one oxygen atom. So, 2 molecules of water x 2 hydrogen atoms per molecule = 4 hydrogen atoms.

To get copper sulfate to dissolve more quickly, you can increase the temperature of the solvent, as solubility generally increases with temperature. You can also stir or agitate the solution to help break down the copper sulfate crystals and distribute them evenly in the solvent. Additionally, you can crush the copper sulfate crystals into smaller pieces to increase the surface area available for dissolution.

For ALL Carbonates, when heated or reacted with an acid produce carbon dioxide. Since sodium carbonate is a CARBONATE it will react ro form carbon dioxide CO2

Na2CO3 == heat===> Na2O + CO2

Na2CO3 + 2HCl === 2NaCl + H2O + CO2