LESSON: TYPES of CHEMICAL CHANGES Objective: You will be able to identify and explain the 4 types of chemical reactions.

Slides:



Advertisements
Similar presentations
Ch 8 - Chemical Reactions. Types of Reactions There are five types of chemical reactions we will talk about: Combination (or synthesis) reactions.
Advertisements

Chemical Reactions.
5 Common Reaction Types: -synthesis-decomposition -combustion-single displacement -double displacement synthesis - means to make something or build Example:
Types of Chemical Reactions
Classifying Chemical Reactions
PRETTY EYESZ a_01_img0184.jpg.
Chemical Reactions. Symbols used in writing reaction equations +Separates two or more reactants or products  Separates reactants from products (s)Solid.
T YPES OF C HEMICAL R EACTIONS AND E NERGY IN R EACTIONS.
Chapter 6: Chemical Reactions. Chemical Equation represents a chemical change or reaction Reactants  Products Reactants – chemicals before the reaction.
- a process where one or more substances (elements) rearrange themselves to form a new substance.
Atoms JEOPARDY S2C06 Jeopardy Review CategorizingEquationsBalancingChemicalEquationsClassification of Chemical Reactions Formulas FormulasElectro-negativity.
Chemical Reactions By Zanman  .
Chemical Formulae, Types of Reactions, Chemical Equations, and Balancing.
 A chemical change must occur as it is the result of a chemical reaction.  A reaction could include ions, molecules, or pure atoms (elements).
Chapter 5 Chemical Reactions The Nature of Reactions Types of Reactions Oxidation-Reduction Reactions Balancing Chemical Equations Rates of change.
Starter Write the balanced formula equation for the following reaction Identify the type of reaction Aqueous lead (II) nitrate was mixed with a hydrochloric.
By, sweetcutie1124 Table of Contents Chemical Reactions: The Basics Signs of a Chemical Reaction Reactants & Products Law of Conservation of mass Energy.
To react or not to react? THAT is the question! Chp 15.2 & 3.
om-with-electrons.gif.
BY: BUBBALO21 Chemical reactions Rx.  The process In which one or more substances is changed into another.
By: Jenny Kocan.  A chemical reaction is a change in which two or more substances combine to form a new substance or substances.
Chemical Reactions: is the process by which one or more substances change to produce one or more different substances.
By Ollie Auerbach. A chemical Reaction  A process in which atoms of the same or different elements rearrange themselves to form a new substance. While.
Types of Chemical Reactions Ch /1/2015Template copyright Types of Chemical Reactions A. Synthesis Reaction – 2 or more.
Classifying Chemical Reactions Kentlake Science Department2 Synthesis Reactions Occur when two or more substances combine to form one compound.
Chemical Reactions Chapter 16 Section 4. Synthesis Reactions two or more substances combine to form another substance A + B  AB N 2 (g) +3H 2 (g)  2NH.
Classifying Chemical Reactions
Chemical Reaction Types. Synthesis Two or more elements or compounds combine to form a more complex product A + B  AB 2H 2 + O 2  2H 2 O 2Na + Cl 2.
Types of Chemical Reactions
C HEMICAL R EACTIONS ! By: LoudElectronicFerocious.
How can we tell if a reaction takes place?. There are four clues: 1. _______________ 2. _______________ 3. _______________ 4. _______________.
Written, Researched, and Compiled By- backstroker1994.
CHEMICAL REACTIONS 7 th Grade Science Bowling Green Junior High.
Chemical Reactions Chapter 7 A way to describe what happens in a chemical reaction. 1)Tells us what substances are involved with the reaction 2)Tells.
Chemical Reactions By: turtlman001. Types of Chemical Reactions There are 5 types of chemical reactions : There are 5 types of chemical reactions : Synthesis.
Types of Reactions. A chemical reaction is a process that is usually characterized by a chemical change in which the starting materials (reactants) are.
Chemical Reactions By cookiesrule The Basics!
Chemical Equation & Reaction Notes -Chemical reactions – occur when chemical bonds (ionic, covalent) between atoms are broken and new bonds are formed.
om-with-electrons.gif.
Chapter 5 Chemical Reactions
Types of Chemical Reactions. Types of Reactions We will talk about five types of chemical reactions: Synthesis reactions Decomposition reactions.
Classifying Chemical Reactions Kentlake Science Department2 The Nature of Chemical Reactions Substances that undergo a chemical reaction experience.
Chemical Reactions Quantitative Chem. Indicators of a Chemical Reaction.
Chemical Reactions By: Stephayy81. Chemical Reaction Basics Reactant: The substance that is participating in the reaction. Product: A substance that is.
Movie: types of chemical reactions:
Demo Single Replacement RXN - Silver in Silver Nitrate will be replaced by Cu from Cu strip. - Ag(NO 3 ) + Cu  Cu(NO3) + Ag - Observe throughout notes.
MADE BY :- LOHIT SHARMA X-C ROLL NUMBER- 1. CONTENTS WHAT IS A CHEMICAL REACTION.... TYPES OF CHEMICAL REACTION SOME MORE..... ELSE WHERE....
Chemical Reactions. When a chemical undergoes a chemical change, it changes its identity. Wood burns to ashes Dynamite explodes into gaseous compounds.
CHEMICAL REACTIONS. Reactions  Chemical Reaction-The combining or breaking apart of matter to form new types of matter.  Take place when 2 or more molecules.
Chemical Reactions. As compared to a “Physical Change” like ice to liquid water When a chemical undergoes a chemical change, it changes its identity.
Section 11.1 & 11.2: Chemical Reactions There are five types of chemical reactions we will talk about: 1.Synthesis reactions (Combination) 2.Decomposition.
Chemical Reactions. Different than a “Physical Change” (like ice to liquid water) When a chemical undergoes a chemical change, it changes its identity.
Chemical Reactions PS-4.6: distinguish between chemical changes (including the formation of gas or reactivity with acids) and physical changes (including.
Chemical Reactions Review What is the difference between a What is the difference between a chemical and a physical reaction? chemical and a physical reaction?
Chemical Change: The change of substances into other substances through a reorganization of the atoms. Chemical Change: The change of substances into.
Identify, give evidence for, predict products of, and classify the following types of chemical reactions: 1. Synthesis (combination) 2. Decomposition.
Chemical Reactions Chapter 5.
Chemical Reactions michelle16555.
Write the following chemical formulas
Chemical Reactions By, Olivia Pierson.
Y9 Chemistry unit lesson 9
Three Types of Chemical Equations
Types of Reactions Types of Reactions
Types of Chemical Reactions
Chemical Equations Chapter 9.
How to identify and classify reactions
Chapter 12 Chemical Reactions.
Today’s Objective: The student will be able to identify the 4 types of equations in a written assignment.
Types of Reactions.
Types of Chemical Reactions
Presentation transcript:

LESSON: TYPES of CHEMICAL CHANGES Objective: You will be able to identify and explain the 4 types of chemical reactions

LESSON: TYPES of CHEMICAL CHANGES Chemical changes are a result of chemical reactions. All chemical reactions involve a change in substances and a change in energy. Neither matter or energy is created or destroyed in a chemical reaction---only changed.

LESSON: TYPES of CHEMICAL CHANGES There are so many chemical reactions that it is helpful to classify them into 4 general types which include the following:

LESSON: 4 Types of Chemical Reactions SYNTHESIS REACTION - In a synthesis reaction two or more simple substances combine to form a more complex substance. (Two or more reactants yielding one product is another way to identify a synthesis reaction. ) For example, simple hydrogen gas combined with simple oxygen gas can produce a more complex substance----- water! The chemical equation for this synthesis reaction looks like: reactant + reactant > product 2H 2 + O  2H 2 O

LESSON: 4 Types of Chemical Reactions DECOMPOSITION REACTION In a decomposition reaction a more complex substance breaks down into its more simple parts. (One reactant yields 2 or more products. Basically, synthesis and decomposition reactions are opposites.) For example, water can be broken down into hydrogen gas and oxygen gas. The chemical equation for this decomposition reaction looks like: reactant > product + product 2 H 2 O > 2H 2 + O 2

LESSON: 4 Types of Chemical Reactions SINGLE REPLACEMENT REACTION In a single replacement reaction a single uncombined element replaces another in a compound. Two reactants yield two products. (For example when zinc combines with hydrochloric acid, the zinc replaces hydrogen.)

LESSON: 4 Types of Chemical Reactions The chemical equation for this single replacement reaction looks like: reactant + reactant > product + product Zn + 2 HCL ---  ZnCl 2 + H 2

LESSON: 4 Types of Chemical Reactions DOUBLE REPLACEMENT REACTION In a double replacement reaction parts of two compounds switch places to form two new compounds. Two reactants yield two products. (For example when silver nitrate combines with sodium chloride, two new compounds--silver chloride and sodium nitrate are formed because the sodium and silver switched places.)

LESSON: 4 Types of Chemical Reactions The chemical equation for this double replacement reaction looks like: reactant + reactant > product + product Ag(NO 3 ) + NaCl  AgCl + Na(NO 3 )

ENERGY OF CHEMICAL REACTIONS (2 types) Chemical reactions always involve a change in energy. Energy is neither created or destroyed. Energy is absorbed or released in chemical reactions. Chemical reactions can be described as endothermic or exothermic reactions.

ENERGY OF CHEMICAL REACTIONS (2 types) Endothermic Reactions Chemical reactions in which energy is absorbed are endothermic. Energy is required for the reaction to occur. The energy absorbed is often heat energy or electrical energy. Adding electrical energy to metal oxides can separate them into the pure metal and oxygen. Adding electrical energy to sodium chloride can cause the table salt to break into its original sodium and chlorine parts.

ENERGY OF CHEMICAL REACTIONS (2 types) Exothermic Reactions Chemical reactions in which energy is released are exothermic. The energy that is released was originally stored in the chemical bonds of the reactants. Often the heat given off causes the product(s) to feel hot. Any reaction that involves combustion (burning) is an exothermic chemical reaction.