Photo chemistry 9 Judy Han
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This document provides definitions and examples for key chemistry concepts including: - Matter is anything that has mass and takes up space, while things like thoughts are not matter. - Pure substances consist of only one type of particle, while mixtures contain more than one substance that may be either homogeneous or heterogeneous. - Elements are pure substances that cannot be broken down further, while compounds are made of two or more elements. - Physical changes alter the form or state of a substance without changing its chemical makeup, unlike chemical changes which create new substances.
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- Physical properties like state and solubility can change without changing the identity of the matter. Chemical properties involve chemical reactions that form new substances.
MATTER IN OUR SURROUNDINGS
This document provides an overview of matter and its different states. It begins by defining matter as anything that has mass and occupies space. It then discusses the particulate nature of matter and describes the three common states of matter - solids, liquids, and gases. It explains the characteristic properties of each state, including how solids have a definite shape but liquids and gases do not. Temperature and pressure can cause changes between the different states. The document also introduces the concepts of elements, compounds, and mixtures as different ways of classifying matter based on its chemical composition.
5.1 Classification Of Matter Part B
This document discusses physical and chemical properties of matter. It begins by defining physical properties such as density, state of matter, and electrical conductivity. It provides examples of calculating density and practice problems. It then discusses clues for identifying chemical properties, such as new substances being formed or gases produced. It compares physical and chemical changes and asks the reader to classify given properties as physical or chemical.
Matter in our sorroundings
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Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
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