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Balbharati solutions for Class 8 Science chapter 13 - Chemical Change and Chemical Bond

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Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Chapter 13: Chemical Change and Chemical Bond

Exercise

Chapter 13: Chemical Change and Chemical Bond Exercise Exercise solutions [Pages 42 - 94]

Exercise | Q 1.1 | Page 94

Complete the statement by filling the gaps using appropriate term.

An __________ is drawn in between the reactants and products while writing the equation for a chemical reation.

Exercise | Q 1.2 | Page 94

Complete the statement by filling the gaps using appropriate term.

Rusting of iron is a __________ chemical change.

Exercise | Q 1.3 | Page 94

Complete the statement by filling the gaps using appropriate term

The spoiling of food is a chemical change which is recognized from the generation of certain _________ due to it.

Exercise | Q 1.4 | Page 94

Complete the statement by filling the gaps using appropriate term.

A colourless solution of calcium hydroxide in a test tube turns _________ on blowing in it through a  blow tube for some time.

Exercise | Q 1.5 | Page 94

Complete the statement by filling the gaps using appropriate term.

The white particles of baking soda disappear when put in lemon juice. This means that it is a ___________ change.

Exercise | Q 1.6 | Page 94

Complete the statement by filling the gaps using appropriate term

Oxygen is a....................... in respiration.

Exercise | Q 1.7 | Page 94

Complete the statement by filling the gaps using appropriate term.

Sodium chloride  is _________ compound while hydrogen chlorid is ___________ compound.

Exercise | Q 1.8 | Page 94

Complete the statement by filling the gaps using appropriate term

Electron ___________ is complete in each hydrogen in a hydrogen molecule.

Exercise | Q 1.9 | Page 94

Complete the statement by filling the gaps using appropriate term

Chlorine (Cl2) molecule is formed by..................... of electrons between two chlorine atoms.

Exercise | Q 2.1 | Page 94

Explain by writing a word equation.

Respiration is a chemical change.

Exercise | Q 2.2 | Page 94

Explain by writing a word equation.

Hard water gets softened on mixing with a solutions of washing soda.

Exercise | Q 2.3 | Page 94

Explain by writing a word equation.

Lime stone powder disappears on adding to dilute hydrochloric acids.

Exercise | Q 2.4 | Page 94

Explain by writing a word equation.

Bubbles are seen on adding lemon juice to baking soda.

Exercise | Q 3 | Page 94

Match the pairs.

a. Photosynthesis  i. Tendency to lose electrons 
b. Water  ii. Reactant in combustion process
c. Sodium chloride  iii. Chemical change
d. Dissolution of salt in water   iv. Covalent bond
e. Carbon  v. Ionic bond
f. Fluorine  vi. physical change 
g. Magnesium  vii. Tendency to form anion
Exercise | Q 4.1 | Page 94

Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Sodium chloride  

Exercise | Q 4.2 | Page 94

Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Potassium fluoride

Exercise | Q 4.3 | Page 94

Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Water

Exercise | Q 4.4 | Page 94

Show with the heip of diagram of electronic configuration how the following compound are formed from the constituent atoms.

Hydrogen chloride

Exercise | Q 7.1 | Page 42

In term of electron transfer, define Oxidation

Exercise | Q 7.2 | Page 42

In term of electron transfer, define Reduction

Chapter 13: Chemical Change and Chemical Bond

Exercise

Balbharati Balbharati Class 8 Science - General Science

Balbharati Class 8 Science - General Science - Shaalaa.com

Balbharati solutions for Class 8 Science chapter 13 - Chemical Change and Chemical Bond

Balbharati solutions for Class 8 chapter 13 (Chemical Change and Chemical Bond) 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 13 Chemical Change and Chemical Bond are Chemical Change and Word Equation, Chemical Changes in Everyday Life, Concept of Chemical Bonding.

Using Balbharati Class 8 solutions Chemical Change and Chemical Bond 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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