Endothermic/Exothermic Processes & Reactions

Slides:

Advertisements

Similar presentations

Endothermic Vs. Exothermic Reaction Graphs. Endothermic Reaction: a reaction in which the products have more stored energy than the reactants. The reaction.

Advertisements

Rates of Reactions Mr. Skirbst Physical Science Topic 18.

Step 1: Energy must be SUPPLIED to break chemical bonds: Step 2: Energy is RELEASED when new chemical bonds are made:

Endothermic and Exothermic Reactions. Chemical Reactions Indicators of Chemical Reactions 5 Different Signs Color Change Odor Change Change in State (liquid.

Whenever chemical reactions occur, energy is transferred to or from the surroundings. An exothermic reaction is one which transfers heat energy to the.

Science Module 8th Grade.

ENDOTHERMIC AND EXOTHERMIC REACTIONS. EXOTHERMIC REACTIONS Chemical Reactions that RELEASE heat with the products. You may see an exothermic reaction.

Chemical Reactions. Produce new substances by changing the way in which atoms are arranged. Produce new substances by changing the way in which atoms.

KEY CONCEPT Life depends on chemical reactions.

Chemical Reactions Glencoe Chapter 23.

Enzymes. Chemical Reactions Process that changes one set of chemicals into another set Slow = iron & oxygen = Fast = fireworks RUST.

3.3 Phase Changes What are six common phase changes?

Activity #34- Signs of a Chemical Reaction. Chemical Reactions Produce new substances by changing the way in which atoms are arranged. Produce new substances.

Phase Changes.  A PHASE CHANGE is a reversible physical change that occurs when a substance changes from one state of matter to another  The temperature.

What are some different possible types of energy? Some of your answers may have included…….

CHEMICAL REACTIONS.

Specific heat capacityFormula to calculate Definition heat energy: Diagram of a calorimeter.

Thermochemistry. Energy Energy – the ability to do _________ or produce _________ Exists in 2 forms:  Kinetic energy – energy of _________  Potential.

By: Corin Burke, Sydney Dunn, Kali Pierre, and Lexy Freeman.

Physical and Chemical Changes. Let’s Review: In A Physical Change.... A substance is changed physically, but not chemically. It is still the same substance.

Exothermic and Endothermic Reactions. Energy and Chemical Reactions Chemical Energy – Energy stored in the chemical bonds of a substance. Chemical reactions.

Topic 7.  Chemical Reactions Two or more substances undergo a reorganization of atoms to form other substances.  Reactants The substances that go.

Do Now 1.Describe 3 different ways to transfer heat between substances. 2.A boy holds an ice cube in his hand and it melts. Describe the method and direction.

DAILY AGENDA 1. Warm-up #39 2.Objective: The student will investigate and understand the following: Identify a physical change and a chemical change. Compare.

Endothermic/ Exothermic. Entry Task Monday May 2 nd List something that feels warm and a something that feels cold.

Thermochemistry Energy Transformations. Definitions Thermochemistry – The study of energy changes that occur during chemical reactions and changes in.

Introduction to Chemical Reactions

Energy changes in reactions

Chemical Reactions.

CH 2 SEC 3 ENERGY AND MATTER.

QQ: Make a table with 3 columns labeled: solid, liquid, and gas

Bundle 3: Matter Types of Reactions.

Activity #28- Signs of a Chemical Reaction

Exothermic and Endothermic Reactions

An Intro to Enthalpy Mawhiney.

Bellwork Compare and contrast lipids and carbohydrates.

KEY CONCEPT Life depends on chemical reactions.

Energy & Reactions.

Heat and Endothermic and Exothermic Reactions

Physical Phase Changes

Evidence of a Chemical Reaction

Units: g/mL, g/cm3.

The Law of Mass Conservation & Energy in Reactions

Forming New Substances

Unit 1: Reaction Kinetics

Bond Energy and Reaction Energy

Bell Work: Exo or Endo? Absorbs heat. Releases heat.

The Nature of Chemical Reactions

Thermodynamics.

Energy in Rxns & Potential Energy Diagrams

Energy Changes in Reactions

14.3 Energy and Reactions.

Forming New Substances

Chapter 7.1 – Nature of Chemical Reactions

Properties & Changes of Matter

Chemistry of Life 2.4 Chemical Reactions.

Energy Changes.

The Law of Mass Conservation & Energy in Reactions

Forming New Substances

Change in Energy Every chemical and physical change in matter includes a change in energy. Like matter, energy is conserved in a chemical change. Energy.

Endothermic Vs. Exothermic Reaction Graphs

Law of Conservation of Mass

Energy and Chemical Changes

7.3 Energy Changes In Reactions

Science Module 8th Grade.

Science Module 8th Grade.

Forming New Substances

14.2 Energy and Chemical Reactions

Presentation transcript:

Endothermic/Exothermic Processes & Reactions

Exothermic Endothermic Process Heat exiting a substance Ex: water freezing Physical change Heat entering a substance Ex: water evaporating Reaction Chemical reaction where energy is released in the form of light or heat Feels hot – chemical bonds forming Temp. change - warmer Ex: Calcium & water Chemical reaction that absorbs energy from its surroundings Feels cold – chemical bonds breaking Temp. change - colder Ex: Vinegar & baking soda

Reaction #1 - Endothermic Baking Soda & Citric Acid Reaction #2 - Exothermic Steel Wool & Vinegar Reaction #3 - Exothermic Calcium & Water Reaction #4 - Endothermic Baking Soda & Vinegar Time Temperature (⁰C) (sec.) (min.)

Graph Results On one piece of graph paper. Have a key to distinguish which line represents which reaction.