MatterMatter

MatterMatter

PA StandardsPA Standards 3.2.12.C: Inquiry and 3.2.12.C: Inquiry and

DesignDesign 3.4.10.A: Physical 3.4.10.A: Physical

Science, Chemistry, Science, Chemistry, and Physicsand Physics

3.4.12.A: Physical 3.4.12.A: Physical Science, Chemistry, Science, Chemistry, and Physicsand Physics

Apply the elements Apply the elements of scientific inquiry of scientific inquiry to solve multi-step to solve multi-step problems.problems.

Explain concepts Explain concepts about the structure about the structure and properties of and properties of matter.matter.

Apply concepts about Apply concepts about the structure and the structure and properties of matter.properties of matter.

ObjectivesObjectives

ExplainExplain physical change, and give physical change, and give examples of physical change.examples of physical change.

ExplainExplain chemical change, and give chemical change, and give examples of chemical changes.examples of chemical changes.

Compare and contrastCompare and contrast physical and physical and chemical changes.chemical changes.

DescribeDescribe how to detect whether a chemical how to detect whether a chemical change has occurred.change has occurred.

ActivityActivity

Complete the “Separating a Complete the “Separating a Mixture” Lab.Mixture” Lab.

Explain Explain physical physical change, and give change, and give

examples of physical examples of physical change.change.

Physical ChangesPhysical Changes Physical changePhysical change a change of a change of

matter from one form to another matter from one form to another without a change in chemical without a change in chemical propertiesproperties

Physical Changes, Physical Changes, continuedcontinued

DissolvingDissolving is a physical change. is a physical change.

• When a substance dissolves, the When a substance dissolves, the molecules of the substance do not molecules of the substance do not change.change.

Physical Changes, Physical Changes, continuedcontinued

Mixtures can be Mixtures can be physically physically separatedseparated..

• Because mixtures are not chemically Because mixtures are not chemically combined, each component of the combined, each component of the mixture has the same chemical makeup mixture has the same chemical makeup it had before the mixture was formed. it had before the mixture was formed.

Separating MixturesSeparating Mixtures

Explain Explain chemical chemical change, and give change, and give

examples of chemical examples of chemical changes.changes.

Chemical ChangesChemical Changes Chemical changeChemical change a change that a change that

occurs when a substance changes occurs when a substance changes composition by forming one or more composition by forming one or more new substancesnew substances

Chemical Changes, Chemical Changes, continuedcontinued

Chemical changes form new Chemical changes form new substances that have different substances that have different properties.properties.

Chemical Changes, Chemical Changes, continuedcontinued Chemical changes can be detected.Chemical changes can be detected.

• Changes in physical properties can be Changes in physical properties can be an indication of a chemical change.an indication of a chemical change.

• Examples include: Know these!Examples include: Know these!• change of colorchange of color• change of smellchange of smell• fizzingfizzing• production of heatproduction of heat• production of soundproduction of sound• production of lightproduction of light

Chemical Changes, Chemical Changes, continuedcontinued Chemical changes cannot be reversed Chemical changes cannot be reversed

by physical changes.by physical changes.

• Because new substances are formed in a Because new substances are formed in a chemical change, the change cannot be chemical change, the change cannot be reversed by using physical changes.reversed by using physical changes.

• Many chemical changes are impossible Many chemical changes are impossible to reverse, for example it is impossible to to reverse, for example it is impossible to ““unbakeunbake”” a cake. a cake.

Chemical Changes, Chemical Changes, continuedcontinued Compounds can be broken down Compounds can be broken down

through chemical changes.through chemical changes.

• Some compounds undergo chemical Some compounds undergo chemical changes to form elements, others break changes to form elements, others break down to form simpler substances.down to form simpler substances.

Compare and Compare and contrast contrast physical physical

and chemical and chemical changes.changes.

Comparing Physical and Comparing Physical and Chemical ChangesChemical Changes

Describe Describe how to how to detect whether a detect whether a

chemical change has chemical change has occurred.occurred.

ActivityActivity

Physical Properties of a Polymer LabPhysical Properties of a Polymer Lab

Thought QuestionsThought Questions How is the property of density observed when farmers How is the property of density observed when farmers

harvest ripe cranberries?harvest ripe cranberries? Describe how you would separate the components of a Describe how you would separate the components of a

mixture of sugar and sand. Would your methods result in mixture of sugar and sand. Would your methods result in physical or chemical changes?physical or chemical changes?

Classify the following as a chemical or physical change:Classify the following as a chemical or physical change: Sugar added to lemonadeSugar added to lemonade Plants using carbon dioxide and water to form oxygen and Plants using carbon dioxide and water to form oxygen and

sugarsugar Water boilingWater boiling An egg fryingAn egg frying Rust forming on metalRust forming on metal Fruit rottingFruit rotting Salt being removed from water by evaporationSalt being removed from water by evaporation

When wood is burned, new substances are produced. When wood is burned, new substances are produced. Describe this reaction, and explain what type of change Describe this reaction, and explain what type of change occurs. Use the terms: occurs. Use the terms: flammability, chemical property, physical change, and flammability, chemical property, physical change, and

chemical change.chemical change.