Elements and Compounds

'Salt???? ' By this I think you mean 'Table Salt', which is used in food/cookery.

Table Salt is sodium chloride .

Potassium chloride is a CHEMICAL salt.

The difference between the two is the elemental cation , sodium and potassium.

Chemical Salts are of the form metal cation(M^(n+)) and acidic anion (A^(n-)).

Since Table Salt (Salt) has a metal cation (N^(+) and an acidic anion (Cl^(-)), then it is also a Chemical Salt.

It is more correct to say, What elements?' , rather than ,What chemicals?'.

The elemetns are : =

Potassioum (K = Kalium (Latin))

Chlorine (Cl).

Sodium chloride is composed of sodium (Na) and chlorine (Cl) ions. Each Na ion carries a positive charge, while each Cl ion carries a negative charge. These ions come together in a 1:1 ratio to form the compound sodium chloride.

No such thing as 'sodium chloride ion'. Sodium chloride is neutrally charged ionic salt.

It is compsed of ions.

The CATION is the sodium ion (Na^(+)).

The ANION is the chloride ion (Cl^(-)).

Because these charges are opposite, they are attracted to each other, like the N & S poles of a magnet.

Because the charges are equal in value , one each, it makes sodium chloride a neutrally charged ionic compound.

Here is the balanced equ'n.

Na^(+) + Cl^(-) = NaCl(s).

Hydrazine is a highly toxic substance. The amount of hydrazine that can be fatal varies depending on several factors, such as:

1:Method of exposure: Inhalation, ingestion, or skin contact

2:Concentration: Strength of the hydrazine solution

3:Duration: Length of time exposed

4:Individual tolerance: Person's overall health and sensitivity

Here are some general guidelines:

1:Inhalation: 50-100 ppm (parts per million) for 30 minutes to 1 hour can be lethal

2:Ingestion: 20-50 mg/kg (milligrams per kilogram of body weight) can be fatal

3:Skin contact: Prolonged exposure to concentrated hydrazine solutions can cause severe burns and potentially be fatal

It's essential to handle hydrazine with extreme caution and follow proper safety protocols to minimize exposure risks.

Carbon dioxide is a compound made of one carbon atom and two oxygen atoms covalently bonded together. The periodic table is a chart that lists elements, which are substances made of only one type of atom. Since carbon dioxide is a compound, it cannot be placed on the periodic table.

No, bronze is an alloy typically made of copper and tin. It is not considered a mineral. Minerals are naturally occurring inorganic substances with a defined chemical composition and crystal structure.

Sodium is a soft, silver-white metal that is highly reactive with water and air. It is often stored under oil to prevent reaction with moisture or oxygen. In its pure form, sodium is shiny and malleable.

Ammonia is the solute and the solvent is the water.

No, H2O is not a solute. It is a solvent because it is capable of dissolving solutes.

Oh honey, bless your heart. Nitrogen is definitely not a metal. It's a non-metal gas that makes up a big chunk of the Earth's atmosphere. So, unless you're breathing in some metal fumes, you can rest easy knowing that nitrogen won't be giving you any heavy metal vibes.

The concept of time and date was not discovered by a single person. It has been developed over thousands of years by various civilizations and cultures through the study of astronomy, mathematics, and the observation of natural phenomena.

SrI2, Li2O, and CaCl2 would be expected to contain ionic bonds, as they consist of a metal cation (Sr, Li, Ca) and a nonmetal anion (I, O, Cl). SO2, BrCl, and CsF would not be expected to contain ionic bonds, as they consist of nonmetals only and are likely to form covalent bonds due to sharing of electrons.

Cetyl trimethyl ammonium bromide (CTAB) is a cationic surfactant commonly used in DNA extraction to separate DNA from other cellular components. CTAB helps disrupt cell membranes and nuclear membranes to release DNA by forming complexes with negatively charged molecules, like proteins and lipids, allowing DNA to be selectively precipitated out from the solution. By using CTAB, DNA can be isolated with high purity and yield.

The number of electrons in each lithium atom is 3.

A stable element is any non-radioactive element. All elements before element atomic number 84 (not including 84) - Polonium (Po) are stable elements.

Dime

Oh, dude, adding silver nitrate to salt water is a chemical change because it forms a solid precipitate of silver chloride. It's like mixing chocolate and peanut butter - two great things coming together to create something new. So yeah, it's totally a chemical change, but don't worry, the salt water won't mind the company.

Microfilm and microfiche are used for long-term preservation and storage of documents, newspapers, journals, and other materials in libraries, archives, and government institutions. They are also used for research purposes, as they provide a compact and easily accessible format for viewing large amounts of information. Additionally, microfilm and microfiche are used in industries such as banking, insurance, and healthcare for storing important records and documents in a secure and space-efficient manner.

The pH of chlorine dioxide is not a straightforward answer as it does not directly measure the concentration of hydrogen ions. Chlorine dioxide is a weakly acidic gas that can dissolve in water to form chlorous acid and chlorite ions. The pH of a chlorine dioxide solution will depend on various factors such as the concentration of the solution and the presence of other substances that can affect the acidity or basicity. Typically, a chlorine dioxide solution will have a pH in the range of 2.5 to 4.0 when used for disinfection purposes.

Grass leaves are considered simple leaves, as they consist of a single blade connected to the stem by a sheath. Compound leaves, on the other hand, are divided into multiple leaflets. Grass leaves have a parallel venation pattern, with veins running parallel to each other from the base to the tip of the leaf. This simple structure allows grass leaves to efficiently capture sunlight for photosynthesis.

Magnesium sulfate and sodium carbonate are both soluble in water. This means there will be four different types of ions in the initial solution: Mg 2+, SO4 2-, Na +, CO3 2-. These ions move about freely, and transiently interact with ions of opposite charge. If this forms a soluble compound, the ions bump together and initially dissolve again. Magnesium carbonate, though, is not considered to be soluble in water. This means that when the magnesium and carbonate ions "bump together" they stay together and form a solid. The result of this reaction is a white precipitate of magnesium carbonate forming in the solution.

Ah, the molecular weight of 7H2O, or water, is about 126.14 grams per mole. Isn't that just a lovely number? Remember, understanding the molecular weight helps us appreciate the beauty and harmony of chemistry.

Well, honey, iron sulfide floats on water because it has a lower density than water. It's like putting a feather on a pillow - the feather floats because it's less dense than the pillow. So, in this case, the iron sulfide just chills on the water's surface because it's lighter than the water itself.

Elements, as listed on the periodic table have atomic numbers, whereas molecules, like water (H2O) have molecular weight, which is the sum of all of the atomic masses of the atoms in a molecule. Each of the components of H2O have an atomic number: Hydrogen has an atomic number of 1 (because it has 1 proton); Oxygen has an atomic number of 8 (it has 8 protons). So, if a person were to try to assign an atomic 'number' to H2O they would likely come up with 2 x 1 (for the 2Hydrogens) + 8 (for the Oxygen) = 10! Now, because an atomic 'number' indicates an element on the periodic table, we'd have to look at the periodic table...and find that 10 is Ne (Neon). As you can see, this would be completely wrong as water is NOT neon! So, water does not have an atomic number. It does, however have a molecular weight! The molecular weight of H2O can be calculated by referring to the periodic table, where we would find that Hydrogen has a weight of 1.0079 grams per mol and Oxygen has an atomic weight of 15.9994 grams per mol. The molecular weight of H2O can be calculated by figuring out how many of each atom is in the molecule, and then multiplying each by it's weight. So: Hydrogen has an atomic weight of 1.0079 and there are two of them in H2O: 1.0079 x 2 = 2.0158 grams per mole Oxygen has an atomic weight of 15.9994 and there is one in H20: 15.9994 x 1 = 15.9994 grams per mole Add them up! 2.0158 + 15.9994 = 18.0152 grams per mole H20 has a molecular 'weight' of 18.152 grams!