Evaluation

Author:Tamil Nadu Board

Tamil Nadu Board Science Solutions for Exercise - Evaluation

Simple step-by-step solutions to Evaluation questions of Atomic Structure from Tamil Nadu Board Class 7 Science Term 1. Also get 3D topic explainers, cheat sheets, and unlimited doubts solving on EMBIBE.

Questions from Evaluation with Hints & Solutions

MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q I

The subatomic particle revolving around the nucleus is:

MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q I

_______ is positively charged.

MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q I

The atomic number of an atom is _____

EASY
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q I

Nucleons consists of___________.

HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q IX

What are nucleons? Why are they called so? Write the properties of the nucleons.

HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q IX

Define valency. What is the valency of the element with atomic number 8? What is the compound by the element with hydrogen?

MEDIUM
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q X

An atom of an element has no electron, will that atom have any mass or not? Can an atom exist without electron? If so then give example.

HARD
7th Tamil Nadu Board
IMPORTANT
Tamil Nadu Board Class 7 Science Term 1>Chapter 4 - Atomic Structure>Evaluation>Q X

Find what is common salt. Name the elements present in it. Write the formula of the common salt. What are the atomic number and mass number of elements? Write the ions in the compound?