Elements and Compounds

YES!!! AgCl forms a WHITE ppt.

It is one of the Classic Tests for halogens.

AgF = No ppt.

AgCl = white ppt.

AgBr = cream/pale yellow ppt

AgI = strong yellow ppt.

AgAs = Not chracterised.

Oh, what a lovely question! Your bronze birthday is when you turn the same age as the day you were born. It's a special day to celebrate how far you've come on your journey through life. I hope you have a wonderful time marking this unique and meaningful milestone!

Iron can exhibit two different oxidation number viz; 2, ^ 3.

For iron ;2; it is Fe(NO3)2 - Ferrous nitrate

For iron '3; it is Fe(NO3)2 - Ferric nitrate.

Note the different number of nitrate anions .

One molecule of Fe2O3 has five(5) atoms. They are ;-

2 z iron ( Fe2)

3 x osygen ( O3)

2 + 3 = 5 (five)!!!!!!

It isn't.

Hydrogen dioxide (or more accurately dihydrogen dioxide) is H2O2, more commonly called hydrogen peroxide.

H2O could be accurately called dihydrogen oxide or dihydrogen monoxide.

H2O is Dihydrogen monooxide (AKA Dihydrogen oxide). The "Di" means there are 2 atoms of hydrogen. If you want to be picky, you can put "mono" in front of "oxide". "Mono" means one.

And the reason 'oxide' ends with 'ide' is because that's what you always do to the element name if there are only 2 elements in a compound.

H2O2 is Hydrogen peroxide. The "per" means there is one oxygen atom for each hydrogen atom.

Hydrogen Dioxide would be HO2. However, this simply cannot exist because the only hydrogen atom can lose one electron, but you have 2 oxygen atoms, each needing 2 electrons. You'd simply be cut short.

And a rule of thumb: Capitalize the first letter of the first element name in a formula, but the rest is lowercase.

Hydrogen itself does not have a taste as it is a colorless, odorless, and tasteless gas. In its elemental form, hydrogen does not interact with our taste buds to produce a specific taste sensation. Taste is typically only perceived when certain molecules interact with taste receptors on our tongues, and hydrogen gas does not have the necessary properties to trigger these receptors.

The melting point is the temperature at which a solid substance transitions into a liquid state. It is a well-defined temperature at which the substance changes phase. Slip melting point, on the other hand, is a more specific term used in the context of fats and oils. It refers to the temperature at which a fat or oil starts to flow under a specific load or pressure, indicating its suitability for certain applications like cooking or baking. In essence, while melting point is a general term for all substances, slip melting point is a more specialized concept within the realm of fats and oils.

Well, darling, fruit punch is a mixture. It's a delightful blend of various ingredients like fruit juices, sugar, and water, all hanging out together in perfect harmony. So, next time you're sipping on that sweet concoction, just remember you're enjoying a good ol' mixture, not some fancy chemical compound.

Oh, dude, hypo phosphorus acid is like this super chill acid that's technically called phosphinic acid. It's got the chemical formula H3PO2, and it's used in some industrial processes and stuff. But like, don't worry too much about it unless you're a chemistry nerd or something.

CaSO4 (is Calcium Sulphate)

Ca = 1 x calcium

S = 1 x sulphur

O = 4 x oxygen

NB Do NOT confuse with copper sulphate , which is 'CuSO4'. There is only one lower case letter difference.

The phenomenon you are describing is due to the difference in refractive indices of the glass or clear plastic and the surrounding air. When light passes from air into a denser medium like glass or plastic, it bends towards the normal line, and when it exits the medium, it bends away from the normal line. This bending of light causes the image to appear inverted when viewed through the glass or plastic cylinder. The lead oxide and lead likely have different refractive indices, causing the inversion effect to only occur for one of the words.

Oh, dude, chlorine and metal? It's like a bad breakup waiting to happen. When chlorine meets metal, it's like a chemical party where the metal gets all corroded and tarnished. So, yeah, chlorine basically ruins the metal's day by causing it to rust or corrode.

Curium is a radioactive element that does not have well-documented reactivity due to its scarcity and radioactivity. It is primarily used for scientific research purposes and does not have any significant commercial applications. However, it is known to exhibit similarities in its chemical properties to other actinide elements.

The chemical symbol for helium is 'He'.

The name 'helium' is from the Classical Greek 'Helios' , which means the Sun.

Helium gas was first detected in the spectra from the Sun , and it is a fusion of hydrogen ions, & neutrons to form helium gas.

H2 + 2neutrons^(o) = He

or

D2= He

NB 'D' being deuterium ( heavy hydrogen ) , which has a mass of '2' . consisting of one proton and one neutron .

When sodium thiosulfate dissolves in water, it undergoes a physical change rather than a chemical reaction. The sodium thiosulfate molecules are surrounded by water molecules, causing them to separate and disperse throughout the solution. This process is known as dissolution, where the ionic compound breaks apart into its constituent ions without any chemical bonds being broken or formed.

Remember the Avogadro Number.

6.022 x 10^(23) atoms make one mole. on ANY substance.

So dividing

9.61 x 10^(23) / 6.022 x 10^(23) =

Cancel down by '10^(23)'.

Hence

9.61/6.022 = 1.5958... moles.

It's an aqueous solution.

Oh, dude, the element that beats wind is... drum roll... rock! Yeah, like, wind can blow all it wants, but a solid rock isn't going anywhere. It's like the immovable object to wind's unstoppable force. So, if you're ever in an elemental showdown, bet on rock to come out on top against that breezy foe.

Shaking an ice pack after the inner bag has burst helps to evenly distribute the contents inside the pack, ensuring that the pack reaches its optimal cooling temperature. This shaking motion helps to mix the contents and prevent any localized freezing or overheating. It also helps to activate any chemical reactions that may be necessary for the pack to reach its full cooling potential.

In suitable conditiopns of temperature and pressure, not available here on Earth, it can exist as a liquid or a gas.

However, here on Earth, in STP conditions. solid calcium carbonate decomposes on heating ( red glowing heat) directly into calcium oxide and carbon dioxide.

Here is the reaction eq'n

CaCO3(s) == heat==> CaO(s) + CO2(g).

There are many Chemical Salts. However, if you mean the salt that you cook with , or found on a table , ( table salt) , then its formula is 'NaCl'.

That is one sodium ion (Na^(+) and one chloride ion (Cl^(-) .

They combine by electrostatic attraction, like the N & S Poles of a magnet.

Chemical salts are substances which have a metal cation e.g. M^(+) or M^(2+) or M^(3+) , and an acidic anion X^(-) , X^2-) or X^(3-)

e.g. CuSO4 ( Copper Sulphate) Cu^(2+) & SO4^(2-)

No!!!! Bromine is only one of two elements that are liquids at room temperature. The orther being Mercury.

Oh, dude, you're hitting me with the hard-hitting questions! Gold's chemical symbol is Au, which is short for "aurum" in Latin, and radium's symbol is Ra. So, like, if you ever need to impress someone at a party with random chemical knowledge, there you go.

The acid with the formula H3PO5 is called phosphoric acid. Phosphoric acid is a polyprotic acid, meaning it can donate more than one proton in a chemical reaction. Its chemical structure consists of one central phosphorus atom bonded to four oxygen atoms and three hydrogen atoms.

Well, isn't that a lovely question! Helium is actually a gas that doesn't have a smell at all. It's a very light and gentle gas that's often used to make balloons float and create a fun atmosphere. So, next time you see a helium balloon, take a moment to appreciate the lightness and joy it brings!