Class 9 Chemistry Chapter 1 Question Answer
Important Notes on Class 9 Chemistry Chapter 1 Question Answer English Medium written by Professor Mr. Tayyab Shahzed. These notes are very helpful in the preparation of Class 9 Chemistry Chapter 1 Question Answer for students of the 9th class Chemistry English Medium and these are according to the paper patterns of all Punjab boards.
Summary and Contents:
Topics which are discussed in the notes are given below:
- Here are the detailed chemistry class 9 chapter 1 mcqs with answers to help you prepare for your exams.
- Complete Exercise MCQs of Chapter No.1 Fundamentals of Chemistry
- Complete Exercise Short Questions with Answers of Chapter No.1 Fundamentals of Chemistry
- Define industrial chemistry and analytical chemistry
- How can you differentiate between organic and inorganic chemistry?
- Give the scope of biochemistry.
- How does a Homogeneous mixture differ from a heterogeneous mixture?
- You can also download the chemistry class 9 chapter 1 mcqs with answers pdf for free.
- What is the relative atomic mass? How is it related to gram? OR Define
relative atomic mass based on the C-12 scale.
- Define the empirical formula with an example.
- State three reasons why do you think air is a mixture and water a
compound.
- Explain why hydrogen and oxygen are considered elements whereas
water a compound.
- What is the significance of the symbol of an element?
- State the reason Soft drink is a mixture and water is a compound.
- If you're looking for comprehensive chemistry class 9 chapter 1 question answer, you've come to the right place.
- Classify the following into element, compound, or mixture.
- Define atomic mass unit. Why is it needed?
- State the nature and name of the substance formed by combining the
following:
- Which one has more atoms: 10g of Al or 10g of Fe?
- Which one has more formula units: 1g of NaCl or Ig of KCl?
- Differentiate between homoatomic and heteroatomic molecules with
examples.
- In which one of the following the number of hydrogen atoms is more? 2
moles of HCI or 1 mole of NH3
- These class 9 chemistry chapter 1 intext questions solutions are designed to simplify your study sessions.
- Define Chemistry. Give its importance in daily life.
- Describe the various branches of Chemistry.
- Define Matter, Substance, Physical Properties, and Chemical Properties.
- Define elements and classify the elements with examples.
- Describe the occurrences of some major elements.
- Define valency. Write a detailed note on the concept of valency.
- Download the class 9 chemistry chapter 1 intext questions solutions today and start your exam preparation without any hassle.
- Define Compound. How is it classified?
- Define Mixture. How is it classified?
- What is a relative atomic mass and atomic mass unit?
- What do you know about atomic numbers and mass numbers? Explain them
with examples.
- Our comprehensive class 9 chemistry chapter 1 mcqs with answers will ensure you're fully prepared for your exams.
- How to write a Chemical Formula? Explain with examples.
- Describe the significance of the chemical formula.
- Define Empirical Formula. Explain it with examples.
- Define Molecular Formula. Explain it with examples.
- Define Molecular Mass and Formula Mass. Give examples.
- Differentiate between ions and free radicals.
- What is Avogadro's Number? Explain with examples.
- Make your study time more effective with these well-organized class 9 chemistry chapter 1 questions and answers.
- Mole is the SI unit for the amount of a substance. Define it with examples.
- Differentiate between the following with examples:
1) Molecule and gram molecule
2)Atom and gram atom
3) Molecular mass and molar mass
4) Chemical formula and gram formula
- Mole (Chemist secret unit): A mole is defined as the amount(mass) of a substance that contains 6.02 × 10^23 number of particles (atoms, molecules or formula units). It establishes a link between mass of a substance and number of particles as shown in summary of molar calculations. It is abbreviated as 'mol'.
- You know that a substance may be an element or compound (molecular or ionic). Mass of a substance is either one of the following: atomic mass, molecular mass or formula mass. These masses are expressed in atomic mass units (amu). But when these masses are expressed in grams, they are called as molar masses. Scientists have agreed that Avogadro's number of particles are present in one molar mass of a substance. Thus, quantitative definition of mole is the atomic mass, molecular mass or formula mass of a substance expressed in grams is called mole.
- CHEMICAL CALCULATIONS: In chemical calculations, we calculate number of moles and number of particles of a given mass of a substance or vice versa. These calculations are based upon mole concept. Let us have a few examples of these calculations. Calculating the number of moles and number of particles from known mass of a substance.