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Molecules in AIR are constantly moving and HITTING the dust particles. Because the molecules are moving in many directions, they COLLIDE with the dust particles from different directions. This action causes the DARTING motion of the dust that you observe. Atoms and molecules are always in motion.

Decreasing the PH of alkaline soilAcidifying FERTILIZERS, such as AMMONIUM sulfate, ammonium nitrate and UREA, can help to reduce the pH of a soil because ammonium oxidises to form nitric acid. Acidifying organic materials include peat or sphagnum peat moss.

The definition of analytical chemistry is EXAMINING materials by separating them into their components and IDENTIFYING each ONE and how much there is of each one. Using MASS spectrometry to MEASURE charged particles to determine the composition of a substance is an example of analytical-chemistry.

Explanation:CLASSIFYING Colloids SOL is a colloidal suspension with solid particles in a liquid. Foam is FORMED when many gas particles are TRAPPED in a liquid or solid. AEROSOL contains small particles of liquid or solid dispersed in a gas.

tion:1. Images is attached BELOW2. There are six electrons in the valence shell of OXYGEN. Hence, there is two shortage of electron in oxygen. In magnesium, there is two oxygen in valence shell of oxygen. Hence, the two magnesium electrons are given to the oxygen ion. The TYPE of bond is an electrovalent or ionic bond. This is because the valency of the compound is +2 and -2.3. There are two ions involved in the reaction. The CATION is and the anion is

2 : COVALENT BOND is presentII) CH4 moleculeBond present is Covalent bondCarbon - atomic NUMBER 6Valence electrons--- 4electronic configuration : 1s² 2s² 2p²So carbon atom shares its 4 valence electrons with four hydrogen atom to form methane molecule.III)Cl2Bond present is covalent bondCl- atomic number 17electronic configuration = 1s²2s²2p⁶3s²3p⁵each CHLORINE atom will share its 1 electron each to gain stability.Iv) O2 molecule Oxygen has 8 Atomic numberelectronic configuration :1s²2s²2p⁴Valence electrons - 8So each oxygen atom shares two pairs of electron hence bond formed is called as Double covalent bodPlease refer the attachment

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tion: the element which cannot be used as a reducing AGENT is sulphur Reason Because. Sulpher is non metal which having TENDENCY to EXCEPT ELECTRONAND in reducing agent it NEEDED. Donate electron

Chemical propertiesAtomic number. The atomic number indicates the number of protons within the core of an atom. ...Atomic mass. The name indicates the mass of an atom, expressed in atomic mass UNITS (amu). ...Electronegativity according to PAULING. ...DENSITY. ...Melting point. ...BOILING point. ...Vanderwaals radius. ...Ionic radius.These properties include color, density, melting point, boiling point, and thermal and electrical conductivity. While some of these properties are due chiefly to the electronic structure of the element, others are more CLOSELY related to properties of the nucleus, e.g., mass number.hope it helps u matemark as brainliest please

Uses of WASHING Soda:SODIUM carbonate (washing soda) is used in glass, SOAP, and paper industries.It is used in the MANUFACTURE of sodium compounds such as Borax.Uses of Baking Soda:Sodium hydrogen carbonate is also ingredient in antacids. ...It is also used in soda-acid fire EXTINGUISHERS.

pH scale is a scale which is used to measure the ACIDIC and basic QUANTITY PRESENT in any COMPONENT

tion:Dielectric constant, property of an electrical insulating material (a dielectric) equal to the ratio of the capacitance of a CAPACITOR filled with the GIVEN material to the capacitance of an identical capacitor in a VACUUM without the dielectric material. or. dielectric, meaning a substance that is a poor conductor of electricity, but a good means of electrical storage. Whether we are talking about ceramic, glass, air, or even vacuum (another good dielectric), scientists USE what is called the Dielectric Constant, which is the ratio of permittivity of a substance to the permittivity of FREE space. Or, in layman’s terms, the ratio of the amount of electrical energy stored in a material by an applied voltage, relative to that stored in a vacuum.

he does not explain orbit.I HOPE this ANSWERS should be HELP you please FOLLOW me

Helium is a CHEMICAL element with the symbol He and atomic number 2. It is a colorless, odorless, TASTELESS, non-toxic, INERT, monatomic gas, the first in the NOBLE gas group in the periodic table. Its boiling point is the lowest AMONG all the elements.

X = 8 (2,6)=oxygenElement Y = 12 (2,8,2)=magnesiumElement X will have the ionic charge of X2- WHEREAS ELEMENT Y will have the ionic charge of X2+

tion:(a) The PARTICLES which have more or LESS electrons than the normal ATOMS are referred to as ions.(b) The particles which have more electrons than the normal atoms are referred to as anions.(C) The particles which have less electrons than the normal atoms are referred to as CATIONS.

metal chloride is NaCl SODIUM chloride and non metal chloride is CARBON TETRACHLORIDE ( covalent)

M is more REACTIVE than LEAD

Metal A burns in air and FORM A2O3.Metal B burns in air to form BOBoth the oxides can react with HCl as well as NAOH to give SALT and water(a) What is the nature of oxide A2O3 :A2O3 is  amphoteric in nature .b) What is the nature of oxide BO ?BO is Amphoteric in natureC) An example Of metal A is Aluminium4Al+3O2----> 2Al2O3D) Metal B is Zinc2Zn +02---->2 ZnO

A) BASIC in NATUREB) METALC) SODIUM

Ionic Compounds have high boiling and melting points as they're very strong and REQUIRE a lot of energy to BREAK. The electrostatic FORCES of attraction between oppositely charged IONS lead to the formation of ions. These compounds are brittle and break into small pieces EASILY.

So weight of NaOH REQUIRED to neutralise 1500 ml.of0.1N HCL= 150/1000 X 40= 6 G

It is BASED on LIMITING reagenthere 2P4 + 8O2 gives P4O6+ P4O10so PHOSPHOROUS having 31G and oxygen having 32gso P4 is the limiting reagentso ignoring oxygen 2P4----- gives P4O6so 2x124 gives 1220so 31 gives 152.5so the answer is 152.5

we can distinguish by the fact that metal are good conductor of ELECTRICITY and Non-metals are not a good conductor of electricity. FIRST of all just COMPLETE the circuit by the GIVEN things and also PLACE samples of metal. and if you pass the current and bulb glows then understand that it is a metal. and if not then it is non-metal.

ts with cold water and FORMS NaOH rate if reaction is fastK will also react similar to Na forming KOHMg does not react with cold water however with steam or hot water to give Mg(OH)2AL reacts does not reactwith any form of water or steam because it forms an oxide coating around itselfhope it helped U plz mark brainliest

tion with oxygen- SODIUM catches fire when kept open in the air , so sodium reacts very vigorously with oxygen.Magnesium reacts with oxygen only on whereas COPPER reacts with oxygen on very strong heating.This reaction shows that here sodium is the most reactive metal and copper is the least reactive metal show the decreasing order of reactivity is Sodium, magnesium and then copper.2)Reaction with water- Sodium reacts very vigorously EVEN with cold water.Magnesium reacts SLOWLY with cold water but rapidly with hot, BOILING water, whereas copper does not react even with steam. This activity shows that your sodium is the most reactive metal and copper is the least reactive metal. Show the order of their decreasing reactivity is Sodium, magnesium and then copper.

(a) Al2O3 (acid) + 2NaOH =2NaAlO2 + H2O Al2O3(base) + 6HCL = 2AlCl3 + 3H2O(b) ALUMINA, aloxide, alundum or aloxite. (C) ZN

electric current PASSING through WATER DUE due to splitting of water MOLECULES into it's CONSTITUENT ions.

there are THREE TYPES of solutionsExplanation:1.saturated solution2.unsaturated solution3.supersaturated SOLUTION.

a)USED the PH SCALEB)venigarc)SALTD)WATER

Explanation:(a) A salt is a compound that is created from an acid by a metal replacing the hydrogen in the acid. Example: SODIUM chloride – NaCl ; derived from sodium metal and hydrochloric acid. Ammonium chloride – NH4Cl ; derived from ammonia and hydrochloric acid(b) The SALTS having the same positive ions belong to the family of salts. Example:  Sodium sulphate and sodium chloride both belong to the same family of salts known as the sodium salts. (c) The salts containing water of CRYSTALLIZATION are known as the hydrated salts. Example: Copper sulphate crystals consist of five molecules of water of crystallization. The salts that have lost water of crystallization are called anhydrous salts. Example: When copper sulphate is strongly heated, the crystals lose all the water of crystallization and form an anhydrous copper sulphate. (d) Copper sulphate pentahydrate salt has the chemical formula - CuSO5H O and is blue in colour. Iron sulphate heptahydrate salt has the chemical formula is FeSO4 .7H2O and is green in colour. (e) The AQUEOUS SOLUTION will turn the blue litmus into red.

Using moist pH PAPER Sulphur and Carbon will show pH value less than 7.  When a proton is being donated by an ION or a molecule, it is called acid.Carbon on reacting with oxide becomes carbon DIOXIDE, which gives carbonic acid on dissolving in water. Sulphur on reacting with oxide becomes  Sulphur dioxide, which gives acid RAIN on dissolving in water.So, both Carbon dioxide and Sulphur dioxide are in gaseous state, and gives acidic product on reaction with water.

udent,◆ Answers -(a) Sodium carbonate (Na2CO3) is used for softening hard water.(b) Calcium hypochlorite (CaOCl2) is used for disinfecting drinking water SUPPLY.(c) Sodium carbonate (Na2CO3) has detergent properties.(d) Calcium hypochlorite (CaOCl2) is used for removing the colour of a coloured cloth.(e) When Plaster of PARIS is mixed with water, it becomes absolutely hard after some TIME.(f) Calcium hypochlorite (CaOCl2) is obtained by the action of CHLORINE on dry SLAKED lime.Hope that is helpful...

tion:potatoes grow well in the ALKALINE soilbroccoli grow well in the ACIDIC SOIL

a acid type of fire extinguisher contains the following compounds -1. Sodium hydrogencarbonate solution.2. Solution of sulphuric acid.Working System -These two SOLUTIONS are present in the separate systems in the extinguisher. When we press the KNOB of this fire extinguisher, then both the sodium hydrogencarbonate and sulphuric acid COMES in contact with each other. This results in production of carbon dioxide gas which stops the burning of an object and thus the fire GETS EXTINGUISHED.

a)EXPLANATION:when BLUE litumu change to red.are CALLED ACID solution.when red litumus changes to blue are called base solution.

i) Since UNIVERSAL indicator is being turned from blue to purple, therefore solution A is a basic solution and hence litmus paper will be turned to blue by  the action of solution A. ii) Since universal indicator is being turned from orange to red, therefore solution B is an ACIDIC solution and hence litmus paper will be turned to red by  the action of solution A. iii) Two substances which are basic and can GIVE solutions like A are Calcium hydroxide and Sodium hydroxide. iv) Two substances which are acidic and can give solutions like B are orange juice and lemon juice. V) When solution A REACTS with solution B , the type of reaction that will occur is called neutralization reaction as they will balance out the pH.

This law was proposed by john Dalton in 1803.according to this law if two elements can combine to FORM more than one compound the masses of the one element that combine with a FIXED MASS of the other element are in the ratio of small whole numbers .

metals are strong,REACTIVE,melleable,ductilenon metals are weak,LEAST reactive,NON meleable,non ductile.metalloids are mixture of metals and non metalsplease MARK it as brainliest