Matter and Its Properties. Students will be able to: ◦ Define what constitutes matter, an...
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Transcript of Matter and Its Properties. Students will be able to: ◦ Define what constitutes matter, an...
![Page 1: Matter and Its Properties. Students will be able to: ◦ Define what constitutes matter, an element, a molecule and a compound. ◦ Differentiate between.](https://reader033.fdocuments.us/reader033/viewer/2022042718/56649e635503460f94b5f4bc/html5/thumbnails/1.jpg)
Honors ChemistryMatter and Its Properties
![Page 2: Matter and Its Properties. Students will be able to: ◦ Define what constitutes matter, an element, a molecule and a compound. ◦ Differentiate between.](https://reader033.fdocuments.us/reader033/viewer/2022042718/56649e635503460f94b5f4bc/html5/thumbnails/2.jpg)
Students will be able to:◦ Define what constitutes matter, an element, a
molecule and a compound.◦ Differentiate between intensive and extensive
properties.◦ Differentiate between physical and chemical
properties.◦ Differentiate between physical and chemical
changes.◦ Differentiate between mixtures and pure
substances.
Objectives
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• Volume is the amount of three dimensional space an object occupies.
• Mass is a measure of the amount of matter.
• Matter is anything that has mass and takes up space.
Matter
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• An atom is the smallest unit of an element that maintains the chemical identity of that element.
• An element is a pure substance that cannot be broken down into simpler, stable substances and is made of one type of atom.
• A compound is a substance that can be broken down into simple stable substances. Each compound is made from the atoms of two or more elements that are chemically bonded.
The Basic Building Blocks of Matter
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Atom
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• Extensive properties depend on the amount of matter that is present.
Examples• volume• mass• the amount of energy in a substance.
Properties of Matter
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• Intensive properties do not depend on the amount of matter present.
• Examples• melting point
• boiling point
• density
• ability to conduct electricity
• ability to transfer energy as heat
Properties of Matter
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Comparing Extensive and Intensive Properties
Video
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• A physical property is a characteristic that can be observed or measured without changing the identity of the substance.• melting point and boiling point
• A physical change is a change in a substance that does not involve a change in the identity of the substance.• grinding, cutting, melting, and boiling
Physical Properties and Physical Changes
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• A change of state is a physical change of a substance from one state to another.
• states of matter—solid state, liquid state, gas state, plasma
• In the solid state, matter has definite volume and definite shape.
• In the liquid state, matter has a definite volume but an indefinite shape.
Physical Properties and Physical Changes
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• In the gas state, matter has neither definite volume nor definite shape.
• Plasma is a high-temperature physical state of matter in which atoms lose most of their electrons, particles that make up atoms.
Physical Properties and Physical Changes
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Liquid
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Gases
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Chemical Reaction
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The reactants are the substances that react in a chemical change.
The products are the substances that are formed by the chemical change.
reactants product Carbon plus oxygen yields (or forms) carbon dioxide.
Chemical Properties and Chemical Changes
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Evidence of a Chemical Reaction
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Electrolysis of Water
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All matter falls into one of two catagories:
◦ Mixture Heterogeneous Homogeneous
◦ Pure Substance Compound Element
Classification of Matter
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• A mixture is a blend of two or more kinds of matter, each of which retains its own identity and properties. • mixed together physically• can usually be separated
• Homogeneous mixtures are called solutions • uniform in composition (salt-water solution)
• Heterogeneous mixtures• not uniform throughout (clay-water mixture)
Mixtures
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Types of Mixtures
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Types of Mixtures
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• A pure substance has a fixed composition.
• Pure substances are either compounds or elements.
• A pure substance differs from a mixture in the following ways:
• Every sample of a given pure substance has exactly the same characteristic properties.
• Every sample of a given pure substance has exactly the same composition.
• Water is always 11.2% hydrogen and 88.8% oxygen by mass.
Pure Substances
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Classification of Matter
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Classification of Matter