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Balbharati solutions for Class 8 Science chapter 5 - Inside the Atom

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Chapters

Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Chapter 5: Inside the Atom

Exercise

Chapter 5: Inside the Atom Exercise Exercise solutions [Page 38]

Exercise | Q 1.1 | Page 38

Answer the following:

Whati is the difference in the atomic models of Thomson and Rutherford ?

Exercise | Q 1.2 | Page 38

Answer the following :

What is meant by valency of an element ? what is the relationship between the number of valence electron and valency ?

Exercise | Q 1.3 | Page 38

Answer the following :

What is meant by atomic mass number ? Explain how the atomic number and mass number of carbon are 6 and 12 respectively.

Exercise | Q 1.4 | Page 38

Answer the following :

what is meant by subatomic particle ? give brief information of three subatomic particles with refrence to electrical charge, mass and location.

Exercise | Q 2.1 | Page 38

Give secientific reason.

All the mass of an atom is concenrated in the nucleus.

Exercise | Q 2.2 | Page 38

Give secientific reason.

Atom is electrically neutral.

Exercise | Q 2.3 | Page 38

Give secientific reason.

Atomic mass number is a whole number.

Exercise | Q 2.4 | Page 38

Give secientific reason.

Atoms are stable though negatively charged electron are revolving within it. 

Exercise | Q 3.1 | Page 38

Define the following form:

Atom 

Exercise | Q 3.2 | Page 38

Define the following form : 

Isotope

Exercise | Q 3.3 | Page 38

Define the following form:

Atomic number

Exercise | Q 3.4 | Page 38

Define the following form :

Atomic mass number

Exercise | Q 3.5 | Page 38

Define the following form :

Moderator in nuclear reactor

Exercise | Q 4.1 | Page 38

Draw a neat lablled diagram

Ruthrford's scattering experiment

Exercise | Q 4.2 | Page 38

Draw a neat lablled diagram

Thomson's atomic model

Exercise | Q 4.3 | Page 38

Draw a neat lablled diagram

Diagramatic sketch of electronic configurations of magnesium  (Atomic number 12)

Exercise | Q 4.4 | Page 38

Draw a neat lablled diagram

Diagramatic sketeh of electronic configuration of Argon (Atomic number 18)

Exercise | Q 5.1 | Page 38

Fill in the blank.

Electron, proton, neutron are the types of __________ in an atom.

Exercise | Q 5.2 | Page 38

Fill in the blank.

An electron carries a ________ charge.

Exercise | Q 5.3 | Page 38

Fill in the blank.

The electron shell _________ is nearest to the nucleus.

Exercise | Q 5.4 | Page 38

Fill in the blank.

The electronic configuration magnesium is 2,  8,  2. From this it is understood that the valence shell of magnesium is ___________.

Exercise | Q 5.5 | Page 38

Fill in the blank.

The valency of hydrogen is 'one as per the molecular formula H2O . Therefore valency of 'Fe' turns out to be ______________ as per the formula Fe2O3

Exercise | Q 6 | Page 38

Match the pairs.

Group 'A' Group 'B'
a. Proton i. Negatively charged
b. Electron 2. Neutral
c. Neutron 3. Positively charged
Exercise | Q 7 | Page 38

Deducd from the datum provided.

     Datum          To deduce
    `""_11^23
Na`
      Neutron number
     `""_6^14C`        Mass number
   `""_17^37 Cl`         Proton number

Chapter 5: Inside the Atom

Exercise

Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Balbharati solutions for Class 8 Science chapter 5 - Inside the Atom

Balbharati solutions for Class 8 chapter 5 (Inside the Atom) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the Maharashtra State Board Balbharati Class 8 Science - General Science solutions in a manner that help students grasp basic concepts better and faster.

Further, we at Shaalaa.com provide such solutions so that students can prepare for written exams. Balbharati textbook solutions can be a core help for self-study and acts as a perfect self-help guidance for students.

Concepts covered in Class 8 Science chapter 5 Inside the Atom are Dalton'S Atomic Theory, Thomson'S Plum Pudding Model of Atom, Rutherford'S Nuclear Model of Atom, Bohr’S Stable Orbit Atomic Model (1913), Atomic Structure, Distribution of Electron, Electronic Configuration of Elements, Valency and Electronic Configuaration, Isotopes, Nuclear Reactor.

Using Balbharati Class 8 solutions Inside the Atom exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in Balbharati Solutions are important questions that can be asked in the final exam. Maximum students of Maharashtra State Board Class 8 prefer Balbharati Textbook Solutions to score more in exam.

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