A process in which two or more substances when mixed together produce one or more new substances.

Slides:



Advertisements
Similar presentations
Changes in Matter Physical phase changes dissolving crushing tearing
Advertisements

Physical vs Chemical.
 Matter is classified by its chemical and physical properties.
Unit 1 Lesson 3 Physical and Chemical Changes
Physical and Chemical Properties. Physical Physical PROPERTY: A characteristic of a substance that can be observed without changing the substance into.
Chemical & Physical Change
Chemical Changes. What is a chemical change? chemical change - matter changes into a new substance through a chemical reaction. The animation to the right.
Matter is… Anything that has mass and takes up space.
Chemistry Goal 9 P HYSICAL AND C HEMICAL C HANGES.
Chemical Reactions 8.5E Investigate how evidence of chemical reactions indicates that new substances with different properties are formed.
Elements & Compounds Notes TEKS: (6.5) Matter and energy. The students knows the differences between elements and compounds Differentiate between elements.
Chemical Reactions. Produce new substances by changing the way in which atoms are arranged. Produce new substances by changing the way in which atoms.
Mixtures and Solutions JEOPARDY!. Jeopardy Board SolutionsMixturesConcentrateVocabPerformance $100 $200 $300 $400 $500.
Mixtures and Solutions Mixtures two or more materials stirred together How do you separate mixture? 1.Hand separation 2.Screening 3.Filtering.
WHAT IS THE DIFFERENCE? Chemical vs. Physical Changes.
Chemical Change aka Chemical Reactions. Concept of Change Change an act of altering a substance an act of altering a substance.
Chemical Reactions Cornell Notes page 139.
(2.3) Chemical Reaction Evidence (p ). Chemical Reaction In a chemical reaction new substances are always formed. Can you identify a chemical reaction.
Evidence of Chemical Reactions Temperature Change Heat is absorbed by the substances causing the temperature to decrease Heat is released by the substances.
Starter What colour is an Acid on the UI scale? What colour is an Alkali on the UI scale? What colour is Neutral on the UI scale?
Test on Friday Oct. 8 Test Review. Two liquids are poured together Is this a physical or chemical change and why?
Test Review Test on Friday Oct. 8.
Physical and Chemical Properties and Changes. Physical Properties Any characteristic of a material that you can observe easily without changing the substance.
Physical versus Chemical Properties. What is a property? Property: a characteristic of a substance that can be observed.
Changing Matter Physical & Chemical Changes. Matter has properties Two basic types of properties that we can associate with matter. Physical properties.
Physical Properties of MATTER and Changes MATTER can undergo!!
Ch Lesson 5 p. E68 – E77 Chemical Changes. Physical change - When matter changes in size, shape, or state without changing what it is.
Evidence of Chemical Change
 Discuss with your shoulder partner  Write down your own definition and some examples in your Physical Change box on your paper.
Chapter Two Notes. Types of Properties Extensive properties – depend on the amount of material in a substance – examples: mass and volume Intensive properties.
–Chemical reactions occur when bonds between the outermost parts of atoms (valence electrons) are formed or broken.
How to tell the difference Physical and Chemical Changes.
Starter: Practice: Agree or disagree with each of these statements: Application: Connection/ Exit:
1 Types of Changes. 2 Physical Change  Change in form of a substance that does not result in a change in identity  For example: cutting, grinding, dissolving,
 When a substance bubbles it may be a clue that a chemical reaction is taking place.
Describing Matter.
Sara Almuresi and Gufran and Amatallah and Hussain 10/22/ th.
Topic: Chemical Changes Topic: Chemical Changes Essential Question: How do you know when a new substance has formed?
Properties & Changes in Matter NGSS Unit 5: Chemical Reactions.
Chemistry Notes 09/23 Physical and Chemical Changes.
How to tell the difference Physical and Chemical Changes.
{ Changing Matter Physical & Chemical Changes. Two basic types of properties that we can associate with matter.  Physical properties  Chemical properties.
Physical and Chemical Changes
What is a Chemical Change?
Physical and Chemical Changes
Think about our powder lab from last week.
Mixtures and Solutions
Chemical Reactions Cornell Notes page 131.
Physical & Chemical Changes.
Activity #30 Physical and Chemical Changes read p
3.6 Physical and Chemical Changes
1. Collect DOL from Green Basket 2. Sharpen Pencil 3
2.3 Chemical Properties.
Chemical and Physical Changes
Evidence of a Chemical Reaction
Changes in Matter.
Physical & Chemical Changes
Physical Properties (Chapter 3-Section 2).
Physical and Chemical Changes
Physical and Chemical Changes
Physical and Chemical Changes
Physical Properties (Chapter 3-Section 2).
Lesson Objective: You will be able to define a chemical change AND be able to list out evidence that a chemical change has occurred.
Physical and Chemical Changes
Physical & Chemical Changes.
Mixtures and Solutions
Mixtures and Solutions
Review.
Physical and Chemical Changes
Physical Property Can be observed with the senses or measured without changing the substance Examples: Melting point Boiling point Color/shape Density.
Presentation transcript:

A process in which two or more substances when mixed together produce one or more new substances.

When a chemical reaction occurs the products and reactants may have different properties you can observe

precipitate bubbles or fizz Examples:

different color change in temperature

It is likely a chemical reaction has occurred if you observe: 1.Gas formation 2.Precipitate formation 3.Change in color 4.Change in temperature

WARNING! Physical changes are not chemical reactions Physical changes include: melting, freezing, boiling, evaporating,dissolving Physical changes are reversible Chemical changes are NOT reversible Physical changes do not produce new substances

Chemicals to mix:Observations: Is there evidence a new substance formed? Is it likely that a chemical reaction took place? One: calcium chloride baking soda Water Two: Calcium chloride Citric acid water Three: Citric acid Baking soda water

Why is the Statue of Liberty green? Homework