CHEMICAL REACTIONS 8.5E – Investigate how evidence of a chemical reaction indicate that a new substance with different properties has formed.

Slides:

Advertisements

Similar presentations

Physical & Chemical Properties Physical & Chemical Changes

Advertisements

The Nature of Chemical Rxns Chapter 5.1. Signs of a Reaction 1.Heat production (sometimes) 2.Color change (sometimes) 3.Fire/Smoke 4.Property change 5.Solid.

Check Your Answers…. CyberEd 1. Create a long list of Examples of Chemical Reactions as you go through the lesson. Fireworks, rusting, combustion, electrolysis,

Matter and Change Ch. 2.

Test 1 Lab Test ?s Lab format with follow up questions – Measure – Observations – PP, CP, PC, CC – Inquiry – Substances/mixtures Written Test 42.

Objective Identify & analyze properties & changes in matter by using worksheets demonstrations, notes and collaboration. Main Ideas 1. Physical Property.

Physical vs. Chemical Changes

Chemical Formulas & Equations 8 th Grade Science 2010 H 2 O NaCl CO 2 2H 2 + O 2 = 2H 2 O.

Fig. 9.3 Investigating Matter Chapter 11. Homework Assignment Chap 11 Review Questions (p 237): 3 – 20 Multiple Choice Questions:

Week of October 27-Octoner 31. There are many common examples of chemical reactions. For instance, chemical reactions happen when baking cookies and.

Introduction to Chemical Reactions and Equations

Chemical Reactions & Chemical Equations

Chapter 3: Matter: Properties and Change. Properties of Matter Physical Property: Can be observed or measured without changing the sample’s composition.

Evidence of Chemical Reactions

Changes Physical & Chemical. Physical Change A physical change is a change in size, shape, form, or state of matter in which the matter’s identity stays.

WHAT’S NEW? MP2 Notebooks – if you earned a 90 or above, you do not have to turn a notebook in again Periodic Table of Elements – Need to memorize and.

- a process where one or more substances (elements) rearrange themselves to form a new substance.

Chemical Formulas & Equations 8th Grade Science 2012

Chapter 6 Chemical Reactions and Equations

Today’s Agenda…. Bellringer: Turn to page 601 and read about changes of state. Edit Bellringers from yesterday Review changes and reactions.

Chemical Reactions.  Atoms interact in chemical reactions: Chemical reaction: produces new substances by changing the way in which atoms are arranged.

Chemical Formulas and Equations H 2 O NaCl CO 2 2H 2 + O 2 = 2H 2 O.

Chemical Reactions. A _________ ___________ is the process in which one or more substances change to make one or more new _________. The properties of.

Chemistry Joke What do you call iron blowing in the wind? Febreeze!

Chemical Reactions Cornell Notes page 139.

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.

Chemical Reactions and Chemical Equations. Quick Review Physical Change A physical change in a substance doesn't change what the substance is. Example:

1 Chemical Reactions: An Introduction Chapter Evidence of Chemical Reactions Chemical reactions involve the rearrangement and exchange of atoms.

Physical and Chemical Changes

Test 2 Review. Test Format Part I: – Lab set up – Follow directions, answer question, apply information Part II: – Written/computer test – 31 questions.

Changing Matter Physical & Chemical Changes. Matter has properties Two basic types of properties that we can associate with matter. Physical properties.

Physical properties Chemical propertiesChemical reactionsEnergy reactionsMiscellaneous 100.

Describing Chemical Reactions The process by which the atoms of one or more substances are rearranged to form different substances is called a chemical.

Chapters 7 and 8. What is a chemical reaction  A chemical reaction (a.k.a, chemical change) is a process in which one or more substances change into.

 1 – Chemical Reaction Basics  2 – Energy & Chemical Reactions  3 –Types of Chemical Reactions  4 – Types of Chemical Reactions

Changes in matter Physical and Chemical Properties

Starter: Evidence of Chemical Reactions 11/06/15 Practice: Notes over Chemical Evidences 11/06/15 Evidence of Chemical Reactions Application Evidence.

 Discuss with your shoulder partner  Write down your own definition and some examples in your Physical Change box on your paper.

Ch. 11 Chemical Equations Chemical reaction - One or more reactants change into one or more products (atoms rearrange their attachments = new substances)

–Chemical reactions occur when bonds between the outermost parts of atoms (valence electrons) are formed or broken.

Chapter 6 Chemical Reactions.

Starter: Practice: Agree or disagree with each of these statements: Application: Connection/ Exit:

High School Physical Science Week 10 Chemical Reactions and the Law of Conservation of Mass.

CHEMICAL CHANGE Chapter Seventeen: Chemical Change  17.1 Chemical Reactions  17.2 Balancing Equations  17.3 Classifying Reactions.

Chemical Properties of Matter - Notes. Properties of Matter Physical Chemical Reactivity – will it react with other matter or energy. Flammability – will.

Topic: Chemical Reactions and Equations PSSA: A/S8.C.1.1.

Chemical Reactions. What is a chemical reaction? A chemical reaction is the process by which substances undergo change to produce different substances,

Starter: Evidence of Chemical Reactions 10/22/15 Practice: Notes over Chemical Evidences 10/22/15 Evidence of Chemical Reactions Application Evidence.

Chemistry Notes 09/23 Physical and Chemical Changes.

Describing chemical reactions Page 23 of INB. Essential Question: What are the signs that a different substance has been formed by a reaction?

LESSON LESSON INTRODUCTION Get Ready Before you begin, decide if you agree or disagree with each of these statements. As you view this presentation, see.

Ch 8 Chemical Equations and Reactions

Unit 1: Matter – Day 29 Focus: Signs of Chemical Reactions

Chemical Reactions Cornell Notes page 131.

What are Chemical Properties & Changes??

Physical Properties Physical properties can be observed and measured without changing the kind of matter being studied. Examples: Melting point Boiling.

Evidence of a Chemical Reaction

Chapter 8 What Is Matter?.

Physical & Chemical Changes

2B.5 Notes Chemical equation

Notes—Physical and Chemical Properties and Changes

How Can We Change Matter Into New Substances?

Chapter: 3 ( _Notes) 3.2 Changes in matter

Topic: Chemical Reactions

FOUNDATIONS OF CHEMISTRY

Chemical Reactions.

Presentation transcript:

CHEMICAL REACTIONS 8.5E – Investigate how evidence of a chemical reaction indicate that a new substance with different properties has formed

CHEMICAL REACTIONS: Elements can combine to form new substances Substances can be broken down into simpler substances Atoms are re-arranged NOT created or destroyed

CHEMICAL REACTIONS: Formulas and equations express what happens What is written is a recombination of those atoms Ex. O2 + 2H2O 2H2O This “rearrangement” shows that new substances with new properties has been formed

Remember: Law of Conservation Mass of Reactants = Mass of Products

CHEMICAL CHANGES A change that produces new substances Properties of the substances change

Signs (Evidence) of a Chemical Change Gas is formed/released Change in odor Change in temperature A precipitate forms Light is produced (flame, bioluminescence, glow sticks, explosions) Change in color (unexpected) Sound

Common Misconception Alert! Temperature change due to adding or removing heat does not represent a chemical change. For example, melting or freezing is a change of state which is a chemical change.

Specific examples that a chemical change has occurred: GAS- baking soda and vinegar COLOR CHANGE- rust HEAT- fireworks (combustion) SOLID- lead nitrate + potassium iodide = lead iodide (a precipitate)

Gas is Formed Elephant’s Toothpaste

The batteries split the H2 and the O. Gas Production Flammable Water Water = H2O. The batteries split the H2 and the O. H2 = hydrogen.

Change in Color Steve Spangler – Color Change

Change in Odor Rotten Egg Lab

A Precipitate is Formed Golden Rain Golden Rain Part 2

Light is Produced Surprize Fire

Change in Temperature X on Fire! Thermite Reaction

Several Examples in One Multiple Reactions

HW: Read through the “Chemical Reactions” packet. On the last page is a table to complete. Use the reading to help you fill in this table. Due next class

Now let’s observe a chemical reaction! This is the student version of notes – what reaction we are doing is a surprise – you will just have to come class !