Endothermic & Exothermic 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

Exothermic and Endothermic Reactions
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 bonds and Energy Chemical energy is the energy stored in the chemical bonds of a substance. Energy changes.
ENDOTHERMIC AND EXOTHERMIC REACTIONS. EXOTHERMIC REACTIONS Chemical Reactions that RELEASE heat with the products. You may see an exothermic reaction.
2.4 Chemical Reactions TEXTBOOK PAGES KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
Chemical Reactions. KEY CONCEPT Life depends on chemical reactions.
Exothermic and Endothermic Reactions © Teachable. Some rights reserved. Free Science Videos for.
Exothermic and Endothermic Reactions
Exothermic and Endothermic Reactions. Energy and Chemical Reactions Chemical Energy – Energy stored in the chemical bonds of a substance. Chemical reactions.
Photosynthesis & Cellular Respiration
Section 2.4 Chemical Reactions.
Exothermic and Endothermic Reactions
Exothermic and Endothermic Reactions
Endothermic or Exothermic??
Exothermic and Endothermic Reactions
Exothermic and Endothermic Reactions
Bellwork Compare and contrast lipids and carbohydrates.
KEY CONCEPT Life depends on chemical reactions.
Energy in chemical reactions
exothermic x explosion Explosion are hot like exothermic reactions.
KEY CONCEPT Life depends on chemical reactions.
Heat and Endothermic and Exothermic Reactions
Exothermic and Endothermic Reactions
Exothermic and Endothermic Reactions
Enzymes are biological or protein catalysts.
The Law of Mass Conservation & Energy in Reactions
Exothermic and Endothermic Reactions
KEY CONCEPT Life depends on chemical reactions.
Exothermic and Endothermic Reactions
Exothermic vs Endothermic … 29
Chemical Reactions Quiz
14.3 Energy and Reactions.
Energy Changes 2. An exothermic reaction is one that transfers energy to the surroundings so the temperature of the surroundings increases. Eg combustion,
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
Energy Changes in Reactions
14.3 Energy and Reactions.
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
Chapter 7.1 – Nature of Chemical Reactions
Question 1 What is the name and symbol of the unit of energy used in energy problems? joule, J.
12.1 Chemical reactions that involve heat
Chemistry of Life 2.4 Chemical Reactions.
Exothermic & Endothermic
The Law of Mass Conservation & Energy in Reactions
KEY CONCEPT Life depends on chemical reactions.
Exothermic and Endothermic Chemical Reactions
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
Exothermic and Endothermic Reactions
Chemical Reactions Date: 12/7/2016 Mrs. Rebecca Collins.
Warm-Up 3/19/14 Balance these equations!.
Endothermic Vs. Exothermic Reaction Graphs
KEY CONCEPT Life depends on chemical reactions.
Energy and Chemical Changes
Photosynthesis & Cellular Respiration
Exothermic and Endothermic Reactions
7.3 Energy Changes In Reactions
Endothermic & Exothermic Reactions
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
KEY CONCEPT Life depends on chemical reactions.
C5 – Energy changes Key Concepts.
KEY CONCEPT Life depends on chemical reactions.
2.2 Energy- the ability to do work
This is an endothermic reaction
KEY CONCEPT Life depends on chemical reactions.
Presentation transcript:

Endothermic & Exothermic Reactions Created by: Mrs. Dube

Endothermic reactions Endothermic reactions absorb energy Endothermic reactions often produce a decrease in temperature; you end up with less energy The bond energies of the reactants are greater than the products Photosynthesis is an endothermic reaction; energy from the sun is absorbed

Exothermic Reactions Exothermic reactions release energy Exothermic reactions often produce an increase in temperature; extra energy is released The bond energies of the reactants (what you start with) are less than the bond energies of the products (what you end up with) All combustion reactions are exothermic

Supplying Energy Exothermic and endothermic reactions work together to supply energy Exothermic Reactions: Reactants  Products + Energy   Endothermic Reactions: Reactants + Energy  Products

How do exothermic reactions differ from endothermic reactions? Quiz Quickie How do exothermic reactions differ from endothermic reactions? Give an example of an exothermic reaction you may have encountered in your daily life. What endothermic reaction do we rely upon to provide us with the oxygen we breathe?