The molecules are the substance made up of extremely small particles called atoms. A group of two or more atoms that form the smallest identifiable unit into which a pure substance can be divided and still retain the composition and chemical properties of that substance. The smallest particle of an element or compound which can exist independently is called a molecule.

Complete the following table providing details related to these atoms. Name of Atom Protium Deuterium Tritium Number of Protons Number of Neutrons Number of Electrons Atomic Number Mass Number

Provided Bohr models are of protium, deuterium and tritium. These are the isotopes of hydrogen. With provided information complete table is as follows: Name of Atom Protium Deuterium Tritium Number of Protons 1 1 1 Number of Neutrons 0 1 2 Number of Electrons 1 1 1 Atomic Number 1 1 1 Mass Number 1 2 3

E M B I B E

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1

Kerala Board Solutions for Chapter: Structure of Atom, Exercise 1: Exercise 1

Author:Kerala Board

Kerala Board Chemistry Solutions for Exercise - Kerala Board Solutions for Chapter: Structure of Atom, Exercise 1: Exercise 1

Attempt the free practice questions on Chapter 1: Structure of Atom, Exercise 1: Exercise 1 with hints and solutions to strengthen your understanding. Chemistry Standard IX Part 1 solutions are prepared by Experienced Embibe Experts.

Questions from Kerala Board Solutions for Chapter: Structure of Atom, Exercise 1: Exercise 1 with Hints & Solutions

EASY

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1

What is a molecule?

HARD

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1

What are the characteristics of molecules of substances?

HARD

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1>Q ►

What are the characteristics of the atoms of an element, according to the atomic theory?

HARD

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1>Q ►

What differences can you infer between the atoms of different elements?

MEDIUM

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1

Question Image

Complete the following table providing details related to these atoms.

Name of Atom	Protium	Deuterium	Tritium
Number of Protons
Number of Neutrons
Number of Electrons
Atomic Number
Mass Number

MEDIUM

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1>Q •

Question Image

Which is the particle that differs in its number in these atoms?

HARD

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1>Q •

Question Image

What interference can you arrive at when the mass number and an atomic number of these elements are examined?

MEDIUM

9th Kerala Board

IMPORTANT

Chemistry Standard IX Part 1>Chapter 1 - Structure of Atom>Exercise 1

Symbols of certain elements are given in the table. Complete the table writing there atomic number, mass number, number of protons, electrons and neutron.