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because it's MOLECULE are having GRATER MOLECULAR SPACE between them

A change is called irreversible if it cannot be CHANGED BACK again. In an irreversible change, NEW materials are ALWAYS FORMED. Sometimes these new materials are useful to us

two electronsThe first principal energy level contains only an s SUBLEVEL; THEREFORE, it can HOLD a MAXIMUM of two electrons. Each principal energy level above the first contains one s orbital and three p ORBITALS.

Ernest RutherfordThe atom, as DESCRIBED by Ernest RUTHERFORD, has a tiny, massive CORE called the nucleus. The nucleus has a positive CHARGE. Electrons are PARTICLES with a negative charge. Electrons orbit the nucleus.

2 energy LEVELS are PRESENT in SODIUM ATOMS .

a) AGB) CC) OD) KE) BHope it HELPS! :D

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100 G of FE contains = 1.0753 x 1024 number of atomsTherefore, 100 grams of SODIUM contains more number of ATOMS than 100 grams of iron.

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ALL OF THESEExplanation:

it is USED in PAPER, PAINTS and TEXTILE INDUSTRIES.

Assuming we are in aqueous conditions, the aluminium ion is small and highly charged which withdraws electron density from the O - H bonds in the HYDRATED complex and makes them quite acidic:[Al(H2O)6]3+⇌[Al(H2O)5OH]2++H+ CARBONATE ions are basic and extract further protons.It would eventually go down to aluminium hydroxide [Al(H2O)3(OH)3] Since this is uncharged it drops out of solution as a precipitate.This results in an acid - base reaction:2H++CO2−3→CO2+H2O You would therefore also see effervescence due to the FORMATION of carbon dioxide.For these REASONS you would not see the formation of aluminium carbonate and this does not exist as a discrete compound.Explanation:Mark as brainliest Don't LET my hardwork waste

The atoms in most molecules are held together by strong ATTRACTIVE forces called chemical bonds. These bonds are FORMED through the INTERACTION of valence electrons of the COMBINING atoms.

ʟɪᴛʏ - Dᴜᴄᴛɪʟɪᴛʏ ɪs ᴛʜᴇ ᴀʙɪʟɪᴛʏ ᴏғ ᴀ ᴍᴀᴛᴇʀɪᴀʟ ᴛᴏ sᴜsᴛᴀɪɴ ᴀ ʟᴀʀɢᴇ ᴘᴇʀᴍᴀɴᴇɴᴛ ᴅᴇғᴏʀᴍᴀᴛɪᴏɴ ●Mᴀʟʟᴇᴀʙɪʟɪᴛʏ - ᴛʜᴇ sᴛᴀᴛᴇ ᴏғ ʙᴇɪɴɢ ᴍᴀʟʟᴇᴀʙʟᴇ, ᴏʀ ᴄᴀᴘᴀʙʟᴇ ᴏғ ʙᴇɪɴɢ sʜᴀᴘᴇᴅ, ᴀs ʙʏ ʜᴀᴍᴍᴇʀɪɴɢ ᴏʀ ᴘʀᴇssɪɴɢ:●Cᴀʀʙᴏɴɪsᴀᴛɪᴏɴ -Cᴀʀʙᴏɴɪsᴀᴛɪᴏɴ ɪs ᴀ ᴘᴀʀᴛɪᴄᴜʟᴀʀ ғᴏʀᴍ ᴏғ ᴛʜᴀᴛ ᴘʀᴏᴄᴇss ɪɴ ᴄʜᴇᴍɪᴄᴀʟ ᴛᴇᴄʜɴᴏʟᴏɢʏ ᴄᴀʟʟᴇᴅ ᴘʏʀᴏʟʏsɪs●Iɢɴɪᴛɪᴏɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ- Tʜᴇ ɪɢɴɪᴛɪᴏɴ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴏғ ᴀ sᴜʙsᴛᴀɴᴄᴇ ɪs ᴛʜᴇ ʟᴇᴀsᴛ ᴛᴇᴍᴘᴇʀᴀᴛᴜʀᴇ ᴀᴛ ᴡʜɪᴄʜ ᴛʜᴇ sᴜʙsᴛᴀɴᴄᴇ sᴛᴀʀᴛs ᴄᴏᴍʙᴜsᴛɪᴏɴ.●Pᴀsᴛᴇᴜʀɪᴢᴀᴛɪᴏɴ- ᴛʜᴇ ᴘᴀʀᴛɪᴀʟ sᴛᴇʀɪʟɪᴢᴀᴛɪᴏɴ ᴏғ ᴀ ᴘʀᴏᴅᴜᴄᴛ, sᴜᴄʜ ᴀs ᴍɪʟᴋ ᴏʀ ᴡɪɴᴇ, ᴛᴏ ᴍᴀᴋᴇ ɪᴛ sᴀғᴇ ғᴏʀ ᴄᴏɴsᴜᴍᴘᴛɪᴏɴ ᴀɴᴅ ɪᴍᴘʀᴏᴠᴇ ɪᴛs ᴋᴇᴇᴘɪɴɢ ϙᴜᴀʟɪᴛʏ.

"Hybridization of XeF4 (Xenon Tetrafluoride)Hybridization of XeF4 (Xenon Tetrafluoride)In the formation of XeF4, two of the 5p orbital electrons which, in the EXCITED state move to fill the VACANT 5 d orbitals. As a result, there are 4 UNPAIRED electrons which INCLUDE 2 in 5p and 2 in 5d orbitals. This results in SP3D2 hybridization."

a. false. Non metalb. TRUE. Both silicon and germanium can be used as the intrinsic semiconductor when fabricating solid-state devicesc. true. Sodium benzoate is commonly used as a preservative in cosmetics and personal care items, such as hair products, BABY wipes, TOOTHPASTE, and mouthwashd.truee.false. An atom is the smallest particle of an element, having the same chemical PROPERTIES as the BULK element.

tion:Thus, hydrogen is OXIDIZED and copper is reduced. ... On the other hand, oxygen of hydrogen peroxide in -1 STATE is reduced to -2 state in water. Thus, in this redox reaction, hydrogen peroxide acts as the OXIDIZING AGENT and lead sulfide acts as the reducing agent.

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option B is the ANSWER because in 1st cell there is 2 and 2nd cell is 6 and the oxygen lies on NUMBER 8

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tion:Since sodium carbonate contains two atoms sodium, ONE atom of CARBON and three atoms of oxygen. The MOLECULAR weight would BENA : 2 x 23.0 = 46C : 1 x 12.0 = 12O : 3 x 16 = 48When we add up the total values i.e, 46 + 12 + 48 = 106Therefore, the molar mass of Na2CO3 is 106 g/mole.AnswerThe molar mass of Na2CO3 is 106 g/mole.

1.insect pestiside is a CHEMICAL

It is wrong.Boiling POINT of METHANE is -161 DEGREE CELSIUS.

for a PURE SUBSTANCE, TAandTB REPRESENT the same TEMPERATURE. EXPLANATION:

tion:the KIND of changes that are TAKEN PLACE AROUND US is TIME

their is no ODOR of ICE.Explanation:

Steel is an alloy made up of iron with typically a few TENTHS of a PERCENT of CARBON to improve its strength and fracture resistance compared to iron.

There will be 13 ELECTRONS in each ATOM of the element. Because in a neutral atom, number of protons is equal to the number of electrons.

solutionsGrade 7ChemistryChapters in Simplified Middle School Chemistry - CLASS 7Exercises in Matter and its CompositionQuestion 8Q8)Give a reason why -(a) Solids have a definite volume & a definite shape.(b) Liquids have a definite volume but no definite shape.(c) Gases have no definite volume and no definite shape.Solution :(a) Solids have definite shape and definite volume because the molecules in solid are CLOSELY packed and in FIXED positions. The molecules can vibrate but do not move around which keeps the shape and volume definite.(b) Liquids have no definite shape but definite volume because the molecules in liquid are not so closely packed and they have space between them. The molecules can move around and the forces of attraction between molecules is less as compared to solids, so the liquid takes the shape of the container and volume is definite.(c) Gases do not have a definite shape or volume because the molecules in gases are very loosely packed, they have large INTERMOLECULAR spaces and hence they move around. The force of attraction between molecules is also very less, as a RESULT gases acquire any shape or any volume.

tion:The full FORM of the IG is Inspector-General of Police. IG is a senior police OFFICER in the police department or the police SERVICE in many COUNTRIES.

an exist as a solid (ice), LIQUID (water) or gas (vapour or gas). Adding HEAT can cause ice (a solid) to melt to FORM water (a liquid). EVEN though the water's physical form changes, its molecules stay the same.#нσρє íт нєℓρѕ♡~#мαяк αѕ вяαíηℓíѕт☘️

I simple words.water that FALLS to the earth as HAIL, mist, rain, sleet, or snow. precipitation.Explanation:HOPE that HELPS you

re two TYPES of fibres – One is natural fibres which are OBTAINED from natural sources e.g. COTTON, silk, wool and other is synthetic fibres which are man-made for example – rayon, nylon, acrylic etc. II. A Synthetic Fibre is a chain of small units of chemical substance joined together.Hope it HELPS you I am an armySaranghae

value of milk is 6 since it is ACIDIC in nature. When the milk is CONVERTED into curd due to the ACTION of bacteria lactic acid is formed which is more acidic in nature. Therefore, the pH value of the milk is reduced as it turns to curd.

in the blank spaces.ᎥᎥ.) Solids are generally rigid. ᎥᎥᎥ.) The volume of the liquid does not change, because the molecules do not leave the liquid.☘ More to KNOW :— ✰ States of matter :-Matter around us exists in three different states –Ꭵ) Solid state — Solids have a definite shape, distinct boundaries and fixed volumes, that is, have NEGLIGIBLE compressibility. Solids have a tendency to maintain their shape when subjected to outside force. They are rigid.ᎥᎥ) Liquid state — LIQUIDS have a fixed volume, but it does not have a fixed shape. They take up the shape of the CONTAINER in which they are kept. Liquids flow and change shape, so they are not rigid but can be called fluid. Its compressibility is very low.➛ Solids, liquids and gases can diffuse into liquids.ᎥᎥᎥ) Gaseous state — Gas is defined as a state of matter consisting of particles that have neither a defined volume nor defined shape. Gases are HIGHLY compressible. ⠀

acetate Explanation:The FORMULA of a compound is ‘YN’, where ‘Y’ is a METAL. WRITE the FORMULAE of thefollowing compounds of ‘Y’l is marked by it

In general, the number of valence electrons is the same within a column and increases from LEFT to RIGHT within a row. Group 1 elements have just one valence ELECTRON and group 18 elements have eight, except for helium, which has only two electrons total.Explanation:Please mark me as BRAIN list please

The law of conservation of mass STATES that“The mass in an isolated system can neither be created nor be destroyed but can be TRANSFORMED from ONE form to another”.Explanation:Law of conservation of mass can be expressed in the differential form using the continuity equation in fluid mechanics and continuum mechanics as:∂ρ∂t+▽(ρv)=0Where,ρ is the densityt is the TIMEV is the velocity▽ is the divergence

er table and an aquifer are TERMS used when DISCUSSING groundwater. The major difference between the two terms is that the WATER table references a specific portion of groundwater and an aquifer is all the groundwater PRESENT in the area.