Question

introduction of chapter metal in our surroundings​

Answer 1

Explanation:

This article brings you the CBSE Class 9 Science notes on chapter 1 'Matter in Our Surroundings'. These chapter notes are prepared by the subject experts and cover every important topic from the chapter. In between these notes, exercise questions are provided. Students must solve these questions to test their understanding about the learned topics. These questions will help you to track your preparation level and get a hold on the subject

Answer 2

Explanation:

Is present 117 elements are known to us they can be divided into three categories metals , nonmetals and metalloids. The electropositive elements which have a tendency to form positive ions by using one or more of their valence electrons are called metals. The arrangement of metals in the decreasing order of their reactivity in the form of a series is called the activity series of metal. The extraction of a metal from its ores is basically a reduction process and involves the reduction of metal ions present in an ore of the metal to the atoms of that metal.