question9

Two magnets are placed so that their north poles face each other. 9.1 Explain the term magnetic field. (2) 9.2 Draw the magnetic field pattern between the two north poles of the magnets. (3) 9.3 The graph below shows how the magnetic force varies with distance between the magnets. 9.3.1 What is the mathematical relationship … Read more

A hydrous salt is composed of anions and cations which are surrounded by a weaklybonded water molecule. Each hydrous salt has a fixed number of water moleculesassociated with it. When a salt holds a water molecule, we call it a hydrated orhydrous salt. 9.1 Write down the term that best describes the water molecule that … Read more