© Boardworks Ltd 2004 1 of 20 © Boardworks Ltd 2005 1 of 24 The breathing system is used by the body to get the oxygen needed for respiration. التنفس هو
Chapter 6 Chemical Reactions: An Introduction. Chapter 6 Table of Contents Copyright © Cengage Learning. All rights reserved 2 6.1 Evidence for a Chemical.
Unit 8 Stoichiometric Relationships In Chemical Reactions Mole Ratios Stoichiometry applied to gases Fractional Components of Chemical Samples Chemical.
CHEMICAL EQUILIBRIUM. Chemical Equilibrium Reversible Reactions: A chemical reaction in which the products can react to re-form the reactants Chemical.
Classification of Matter Four classes of matter w The four classes of matter are elements, compounds, mixtures, and solutions.
3 RD TERM VOCABULARY. ACID VINEGAR SUBSTANCE THAT RELEASES H+ IONS AND PRODUCES HYDRONIUM IONS WHEN DISSOLVED IN WATER.
1 Chapter 5 Chemical Reactions Chemical Changes Chemical Equations Balancing a Chemical Equation.
Chemical Equilibrium 7.1.1 Outline the characteristics of chemical and physical systems in a state of equilibrium 7.2.1 Deduce the equilibrium constant.
Chemical Equations and Reactions Describing Chemical Reactions.
Chapter 6 Chemical equilibrium 6 Chemical equilibrium 6.1 Equilibrium condition & affinity of chemical reaction 6.2 Isothermal of chemical reaction 6.3.
Notes – Chemical Equations Chapter 8, Lesson 2. Conservation of Mass When the end of the last period bell rang, everyone moved to a new room, and ended.
8 th Science. molecule – combination of 2 or more atoms bonded together compounds – substance made of 2 or more elements chemically combined synthesis.