Chemistry291

  What are atoms made of? Answer: Atoms are made up of three fundamental particles.These particles are electrons,protons and neutrons.You get protons and neutrons in the nucleus of an atom and you will get electrons outside of nucleus of an atom.Remember that the charge of electron is negative , the charge of proton is positive and the charge of neutron is neutral or zero.

NH3 (ammonia) is an inorganic compound .                    Explanation: Firstly,we know that an organic compound contains carbon(C) and an inorganic compound may contain carbon.So NH3 (ammonia) is not a organic compound as it has no carbon.  Secondly,we know that an organic compound contains carbon-hydrogen direct bond(C-H) and an inorganic compound doesn't contain carbon-hydrogen direct bond. In case of NH3 (ammonia)  ,we do not get carbon-hydrogen direct bond(C-H).So NH3 (ammonia) is an inorganic compound. Thirdly,we know that an organic compound contains carbon-carbon direct bond(C-C) and an inorganic compound doesn't contain carbon-carbon direct bond. In case of NH3 (ammonia),we do not get carbon-carbon direct bond(C-C).So NH3 (ammonia is an inorganic compound. Next

     Is RNA an organic or inorganic compound? Answer: Yes,RNA is an organic compound. Explanation: Firstly,we know that an organic compound contains carbon(C) and an inorganic compound may contain carbon.A RNA molecule contain  carbons.So ,RNA is an organic compound. Secondly,we know that an organic compound contains carbon-hydrogen direct bond(C-H) and an inorganic compound doesn't contain carbon-hydrogen direct bond. In case of  RNA,we get carbon-hydrogen direct bond(C-H).So ,RNA is an organic compound. Thirdly,we know that an organic compound contains carbon-carbon direct bond(C-C) and an inorganic compound doesn't contain carbon-carbon direct bond. In case of RNA,we  get carbon-carbon direct bond(C-C).So RNA is an organic compound.

   Is DNA an organic or inorganic compound? Answer: Yes,DNA is an organic compound. Explanation: Firstly,we know that an organic compound contains carbon(C) and an inorganic compound may contain carbon.A DNA molecule contain  carbons.So ,DNA is an organic compound. Secondly,we know that an organic compound contains carbon-hydrogen direct bond(C-H) and an inorganic compound doesn't contain carbon-hydrogen direct bond. In case of  DNA,we get carbon-hydrogen direct bond(C-H).So ,DNA is an organic compound. Thirdly,we know that an organic compound contains carbon-carbon direct bond(C-C) and an inorganic compound doesn't contain carbon-carbon direct bond. In case of DNA,we  get carbon-carbon direct bond(C-C).So DNA is an organic compound.

H2O(water) is an inorganic compound. Explanation: Firstly,we know that an organic compound contains carbon(C) and an inorganic compound may contain carbon.Water does not contain any carbon.So ,H2O is an inorganic compound. Secondly,we know that an organic compound contains carbon-hydrogen direct bond(C-H) and an inorganic compound doesn't contain carbon-hydrogen direct bond. In case of H2O(water),we do not get carbon-hydrogen direct bond(C-H).So ,H2O(water) is an inorganic compound. Thirdly,we know that an organic compound contains carbon-carbon direct bond(C-C) and an inorganic compound doesn't contain carbon-carbon direct bond. In case of H2O(water),we do not get carbon-carbon direct bond(C-C).So H2O(water) is an inorganic compound.

CO2 (Carbon dioxide) is an inorganic compound. CO2 (Carbon dioxide) an organic or inorganic compound?  Explanation: Firstly,we know that an organic compound contains carbon(C) and an inorganic compound may contain carbon.So CO2 (Carbon dioxide) may be either an organic compound or inorganic compound. Secondly,we know that an organic compound contains carbon-hydrogen direct bond(C-H) and an inorganic compound doesn't contain carbon-hydrogen direct bond. In case of CO2 (Carbon dioxide,we do not get carbon-hydrogen direct bond(C-H).So CO2 (Carbon dioxide) is an inorganic compound. Thirdly,we know that an organic compound contains carbon-carbon direct bond(C-C) and an inorganic compound doesn't contain carbon-carbon direct bond. In case of CO2 (Carbon dioxide,we do not get carbon-carbon direct bond(C-C).So CO2 (Carbon dioxide) is an inorganic compound. Next

Is HCl (Hydrochloric acid) an Acid or Base? Answer: HCl (Hydrochloric acid) is an acid. Explanation: Today we will know about whether HCl (hydrochloric acid) is an acid or Base in just four steps.               Step-1: HCl gives hydrogen ion into water ,H₂O.We know that an acid gives hydrogen ion  in water.So  HCl  is an acid. HCl  is an acid according to  Arrhenius  concept of acid and base concept. HCl  ----> Cl  + H +                          Step-2: HCl  reacts with an base to produce salt and water.So  HCl  is an acid. HCl  +NaOH ----> NaCl  + H₂O HCl =Acid NaOH =Base NaCl=Salt H₂O =Water               Step-3: HCl  gives proton(H + ) to a base NH₃.Since  HCl  is a proton donar ,  HCl  is an acid.According to Brønsted–Lowry  concept of acid and base , also called  proton theory of acids and bases ,  HCl  is an acid. HCl  +NH₃ ---->  NH₄Cl                          Step-4 : HCl  turns blue  litmus paper into  red .We know that an acid can do that.So, HCl  is an a

Is KOH(Potassium hydroxide) an Acid or Base ? Answer: Yes,KOH is a base. Explanation: Today we will know about whether KOH(Potassium hydroxide) is an acid or base in just three steps.               Step-1: KOH gives hydroxide ion into water ,H₂O.We know that an base gives hydroxide ion  in water.So KOH is an base. KOH(aq.) ----> K +  (aq) +  OH -  (aq.)                          Step-2: KOH reacts with an acid H₂SO₄ to produce salt and water.So KOH is an base. H₂SO₄ (Acid) +KOH (Base) ----> K₂SO₄ (Salt)  + H₂O H₂SO₄ =Acid KOH =Base K₂SO₄=sodium sulphate H₂O =Water                                         Step-3 : KOH turns red  litmus paper into blue .We know that an base can do that.So,KOH is  an base. continue

Is NH3 (Ammonia) an Acid or Base? Answer: NH3 (Ammonia) is a base. Explanation: Today we will know about whether NH₃(ammonia) is an acid or base in this blog post.               Step-1: NH₃ gives a pair of electrons to  H +  or another species or a molecule and thus  NH₃  forms a covalent bond. NH₃ can donate a pair of electrons because in the lewis structure of  NH₃,  we get one lone pair of electrons over N atom(: NH₃). We know that an base gives a pair of electrons  to another ion or molecule according to lewis theory of acid and base.So,  NH₃  is an base. 2H₃ N: +Ag  ⁺  ---->    [Ag(NH₃)₂]⁺. Here two molecules of  NH₃   have donate two pair of electrons to  Ag  ⁺.That is why  NH₃   is an lewis base and  Ag  ⁺   is a lewis acid.                          Step-2: NH₃  reacts with an acid HCl to produce NH⁺₄Cl⁻ .Here  NH₃ is a proton acceptor and HCl is proton donar.  According to  Bronsted-Lowry concept,an base is a substance which  has the tendency to accept a proton .On the other

Is NaOH(Sodium hydroxide) an Acid or Base ? Today we will know about whether NaOH(Sodium hydroxide) is an acid or Base in just three steps.               Step-1: NaOH gives hydroxide ion into water ,H₂O.We know that an base gives hydroxide ion  in water.So NaOH is an base. NaOH(aq.) ----> Na +  (aq) +  OH -  (aq.)                          Step-2: NaOH reacts with an acid H₂SO₄ to produce salt and water.SoNaOH is an base. H₂SO₄ (Acid) +NaOH (Base) ----> Na₂SO₄ (Salt)  + H₂O H₂SO₄ =Acid NaOH =Base Na₂SO₄=sodium sulphate H₂O =Water                                         Step-3 : NaOH turns red  litmus paper into blue .We know that an base can do that.So,NaOH is  an base. continue

Is H2SO4(Sulphuric acid) an Acid or Base ? Today we will know about whether H2SO4(Sulfuric acid) is an acid or Base in just four steps.               Step-1: H₂SO₄  gives hydrogen ion into water ,H₂O.We know that an acid gives hydrogen ion  in water.So H₂SO₄ is an acid. H₂SO₄ is an acid according to  Arrhenius  concept of acid and base. H₂SO₄ ----> SO₄²-  + H +                          Step-2: H₂SO₄ reacts with an base to produce salt and water.So H₂SO₄ is an acid. H₂SO₄ +NaOH ----> Na₂SO₄  + H ₂O H₂SO₄ =Acid NaOH =Base Na₂SO₄=sodium sulphate H ₂O =Water               Step-3: H₂SO₄ gives proton(H + ) to a base NH₃.Since H₂SO₄ is a proton donar , H₂SO₄ is an acid.According to Brønsted–Lowry concept of acid and base , also called  proton theory of acids and bases , H₂SO₄ is an acid. H₂SO₄ +NH₃ ----> (NH₄)₂SO₄  + H ₂O                          Step-4 : H₂SO₄ turns blue   litmus paper into red .We know that an acid can do that.So, H₂SO₄ is an acid. continue

  What is a prime number? Answer: A prime number is that number that has only two divisors or factors.The first divisor or factor is 1 and the second divisor or factor is itself. ●A prime number is that number that is the product of 1 and itself. ●A prime number has the following characteristics: 1.It is greater than 1 2.It has only two factors. 3.It can't be negative number.It is always positive number. Now let us take some examples. ●2 is an example of a prime number because it has only two divisors.The first divisor is 1 and the second divisor is 2 (itself) 2 =1×2 The number 2 is a prime number because it is the product of 1 and itself. ●3 is an example of a prime number because it has only two divisors.The first divisor is 1 and the second divisor is 3 (itself) 3 =1× 3 The number 3 is a prime number because it is the product of 1 and itself. ●5 is an example of a prime number because it has only two divisors.The first divisor is 1 and the second divisor is 5 (itself)

  Is potassium dichromate(K2Cr2O7) a Pure Substance? Select one from the following options: A)No  B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. Potassium dichromate (K₂Cr₂O₇) is a compound.So it is a pure substance. Next

Is diamond a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. Diamond is an element.So it is a pure substance.Remember that diamond is formed by only one type of atom which is carbon. Next

Is  milk a pure substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(A) Matter can be divided into pure substance and mixture.Then pure substance can be divided into elements and compounds. So from this classification,we can say that a compound is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. In milk, we get more than one elements and compounds.So milk is neither a single compound nor a single element.As a result, it is not a pure substance.It doesn't have a  definite and fixed composition.Actually,it is a mixture.In milk,we get water, protein,minerals  etc. Next

Is beryllium(Be) a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. Beryllium(Be) is an element.So it is a pure substance. Next

Is oxygen (O₂) a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element.Oxygen(O₂) is an element.So it is a pure substance. Next

Is lithium (Li) a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element.Lithium(Li) is an element.So it is a pure substance. Next

Is Hydrogen (H2) a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element.Hydrogen(H₂) is an element.So it is a pure substance. Next

Is Helium (He) a Pure Substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(B) Matter can be divided into pure substance and mixture.Then pure substance can be divided into element and compound.So from this classification,we can say that an element is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element.Helium(He) is an element.So it is a pure substance. Next

Is  blood a pure substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(A) Matter can be divided into pure substance and mixture.Then pure substance can be divided into elements and compounds. So from this classification,we can say that a compound is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. In blood, we get more than one elements and compounds.So blood is neither a single compound nor a single element.As a result, it is not a pure substance.It doesn't have a  definite and fixed composition.Actually,it is a mixture.In blood,we get N₂,O₂,CO₂, Organic and inorganic compounds etc. Next

  Is  soil a pure substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(A) Matter can be divided into pure substance and mixture.Then pure substance can be divided into elements and compounds. So from this classification,we can say that a compound is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. In soil we get more than one elements and compounds.So soil is neither a single compound nor a single element.As a result, it is not a pure substance.It doesn't have a  definite and fixed composition.Actually,it is a mixture.In soil,we get water,air,organic and inorganic compounds etc. Next

Is a mixture a pure substance yes or no? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(A) Matter can be divided into pure substance and mixture.Then pure substance can be divided into elements and compounds. So from this classification,we can say that a compound is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. Next

Is  air a pure substance? Select one from the following options: A)No B)Yes C)Never D) Sometimes Answer:(A) Matter can be divided into pure substance and mixture.Then pure substance can be divided into elements and compounds. So from this classification,we can say that a compound is a pure substance.In pure substance,the composition remains fixed.An element is formed by only one type of atoms or by atoms which have same atomic number.On the other hand,a compound is formed by more than one element. In air we get more than one elements and compounds.So air is neither a single compound nor a single element.As a result, it is not a pure substance.It doesn't have a  definite and fixed composition.Actually,it is a mixture.In air,we get N₂,H₂,CO₂ etc. Next

How many sigma and pi bonds are in a single double and triple bond? Today you will learn about the number of sigma and pi bonds that are present  in a single double and triple bond.Let us know the rules first. Rule-1:One single bond indicates one sigma bond. Rule-2:One double  bond indicates one sigma bond and one pi bond. Rule-3:One triple bond indicates one sigma bond and two pi bonds. So ,from second rule, we can say that in a single double we get one sigma and one pi bonds. from third rule, we can say that in a single triple bond we get one sigma and two pi bonds. Next