Chapters
Chapter 2: Health and Diseases
Chapter 3: Force and Pressure
Chapter 4: Current Electricity and Magnetism
Chapter 5: Inside the Atom
Chapter 6: Composition of Matter
Chapter 7: Metals and Nonmetals
Chapter 8: Pollution
Chapter 9: Disaster Management
Chapter 10: Cell and Cell Organelles
Chapter 11: Human Body and Organ System
Chapter 12: Introduction to Acid and Base
Chapter 13: Chemical Change and Chemical Bond
Chapter 14: Measurement and Effects of Heat
Chapter 15: Sound
Chapter 16: Reflection of Light
Chapter 17: Man made Materials
Chapter 18: Ecosystems
Chapter 19: Life Cycle of Stars
Chapter 5: Inside the Atom
Balbharati solutions for General Science 8th Standard Maharashtra State Board Chapter 5 Inside the Atom Exercise [Page 38]
What is the difference in the atomic models of Thomson and Rutherford?
What is meant by valency of an element? what is the relationship between the number of valence electron and valency?
What is meant by atomic mass number? Explain how the atomic number and mass number of carbon are 6 and 12 respectively.
What is meant by subatomic particle? give brief information of three subatomic particles with reference to electrical charge, mass and location.
Give scientific reason.
All the mass of an atom is concentrated in the nucleus.
Give scientific reason.
Atom is electrically neutral.
Give scientific reason.
Atomic mass number is a whole number.
Give scientific reason.
Atoms are stable though negatively charged electron is revolving within it.
Define the following form:
Atom
Define the following form :
Isotope
Define the following form:
Atomic number
Define the following form :
Atomic mass number
Define the following form :
Moderator in nuclear reactor
Draw a neat labelled diagram
Rutherford's scattering experiment
Draw a neat labelled diagram
Thomson's atomic model
Draw a neat labelled diagram
Diagramatic sketch of electronic configurations of magnesium (Atomic number 12)
Draw a neat labelled diagram
Diagramatic sketch of electronic configuration of Argon (Atomic number 18)
Electron, proton, neutron are the types of __________ in an atom.
An electron carries a ________ charge.
The electron shell _________ is nearest to the nucleus.
The electronic configuration magnesium is 2, 8, 2. From this it is understood that the valence shell of magnesium is ___________.
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.
Match the pairs.
| Group 'A' | Group 'B' |
| a. Proton | i. Negatively charged |
| b. Electron | 2. Neutral |
| c. Neutron | 3. Positively charged |
Deduce 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
Balbharati solutions for General Science 8th Standard Maharashtra State Board chapter 5 - Inside the Atom
Balbharati solutions for General Science 8th Standard Maharashtra State Board 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 General Science 8th Standard Maharashtra State Board solutions in a manner that help students grasp basic concepts better and faster.
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Concepts covered in General Science 8th Standard Maharashtra State Board chapter 5 Inside the Atom are Thomson'S Plum Pudding Model of Atom, Bohr’s Stable Orbit Atomic Model (1913), Distribution of Electron, Electronic Configuration of Atoms, Valency and Electronic Configuaration, Nuclear Reactor, Lord Rutherford’s Atomic model, Symbols of Elements, Atom, Isotopes.
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