PPT-Chemical Reactions: The Law of Conservation of Mass

What happens in a Chemical Reaction Chemical bonds in the reactants are broken then atoms are rearranged to form new substances products The amount of matter does not change. Law of Conservation of Mass. The law of conservation of mass states that in any given chemical reaction, the total mass of the reactants equals the total mass of the products.. Chemical equations obey the law of conservation of mass. They show that all the atoms in the reactants are still present in the products.. . Chemical . Reactions and. . Reaction . Stoichiometry. James F. Kirby. Quinnipiac University. Hamden, CT. Lecture Presentation. Stoichiometry. The study of the mass relationships in chemistry. Based on the Law of Conservation of Mass (Antoine Lavoisier, 1789). Theme: . Changes and Reactions . LecturePLUS Timberlake. 2. color. melting point. boiling point. electrical conductivity. specific heat. density . state (solid, liquid, or gas). . Redox. ) Reactions. Chapter 20. Salt on icy roads can make driving safer, but the salt that clings to the metallic parts of cars can cause them to corrode or rust relatively quickly. This corrosion is one example of a chemical reaction called oxidation-reduction. You will learn about oxidation-reduction reactions.. What happens in a Chemical Reaction?. Chemical . bonds. in the reactants are . broken. , then atoms are . rearranged. to form new substances (. products. ). . The amount of . matter. does not . change. Synthesis reactions. Decomposition reactions. Single replacement reactions. Double replacement reactions. (Precipitate reaction). Chemical Reactions can be written as:. Word equation. Chemical equation. MAT 493. 5/6/2015. Outline. Introduction. Homogeneous Case. Non-Homogeneous Case. Semi-Linear Case. Introduction. What is a Chemical Reaction?. A process that transforms one or more substances into another.. Add the new notes to your . table of contents. , and then turn to the next clean page and set up your title and date. Tape the two slides into your INB flat down, directly under your title - they do not need to flip up. In a chemical reaction the total mass of everything at the end of the reaction is the same as the total mass at the beginning.. The Law of Constant Composition. However you make a compound, it always contains the same elements in the same proportions by mass.. In a chemical reaction the total mass of everything at the end of the reaction is the same as the total mass at the beginning.. The Law of Constant Composition. However you make a compound, it always contains the same elements in the same proportions by mass.. A. General Features of Physical and Chemical Changes. A chemical change (a . chemical reaction. ) converts . one substance into another.. Chemical reactions involve:. Breaking bonds in the . reactants . Objectives. Compare chemical reactions to physical changes. Compare parts of an atom. Calculate the mass of one mole of an element or compound. Explain how ionic and covalent bonds are formed. Identify the parts of chemical equations. What is a thermal decomposition reaction? Can you given an example?. GOOD PROGRESS:. Recall the definition of ‘conservation of mass’. Explain conservation of mass in chemical reactions. OUTSTANDING PROGRESS:. Chemical Quantities and reactions. . . Course lecturer : . Dr. Altijana Hromić-Jahjefendić. 1 mole of an element = . 6.02 x. . 10. 23. . atoms of that element. Moles of Elements in a Chemical Formula.