unit 1 matter “if we all did the things we are capable of doing, we would literally astound...
TRANSCRIPT
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Unit 1 Matter
“If we all did the things we are capable of doing, we would literally astound ourselves.”
Thomas A. Edison
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Matter:
• Has mass
• Takes up space
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What types of matter are there?
Does it matter?
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A grocery store is organized
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How is matter organized?
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Start like this
How is matter organized?
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Phases of matter
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Phases of matter
• Solid• Liquid• Gas
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Phases of matter
• Solid• Liquid• Gas
…best defined on substances—mixtures are harder to classify.
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Phases of matter
Volume Shape
Solid Definite Definite
Liquid Definite Indefinite
Gas Indefinite Indefinite
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Phases of matter
Volume Shape
Solid Definite Definite
Liquid Definite Indefinite
Gas Indefinite IndefiniteDepends on te
mpera
ture
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Properties
• You can describe a sample of matter by describing its properties.
• Chemical properties describe the types of chemical reactions it can undergo.
• Physical properties are all other properties.
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Types of Matter
• All matter is either a substance or a mixture of substances
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Types of Matter
• All matter is either a substance or a mixture of substances
• A mixture can be separated using physical changes. No new substances are formed
• A substance cannot be separated by physical means
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Types of Matter
All matter is either a substance or a mixture of substances
• A substance is either an element or a compound.
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Types of Matter
All matter is either a substance or a mixture of substances
• A substance is either an element or a compound.
• An element is composed of identical atoms
• A compound is composed of atoms of different elements chemically bonded
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
• An element can be a metal or a nonmetal
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
• An element can be a metal or a nonmetal
• Metals are on the left of the periodic chart
• Nonmetals are on the right
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
An element can be a metal or a nonmetal
• A compound is either ionic or covalent
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
An element can be a metal or a nonmetal
• A compound is either ionic or covalent• An ionic compound has a metal and a
nonmetal — an ionic bond is formed by the transfer of electrons
• A covalent compound has nonmetal atoms only —covalent bonds are the sharing of electrons
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
An element can be a metal or a nonmetal
A compound is either ionic or covalent
• A mixture is either homogeneous or heterogeneous
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
An element can be a metal or a nonmetal
A compound is either ionic or covalent
• A mixture is either homogeneous or heterogeneous
• A homogeneous mixture is called a solution—has the same composition throughout
• A heterogeneous mixture has chunks.
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Types of Matter
All matter is either a substance or a mixture of substances
A substance is either an element or a compound.
An element can be a metal or a nonmetal
A compound is either ionic or covalent
A mixture is either homogeneous or heterogeneous
![Page 24: Unit 1 Matter “If we all did the things we are capable of doing, we would literally astound ourselves.” Thomas A. Edison](https://reader030.vdocuments.us/reader030/viewer/2022032707/56649e555503460f94b4cf66/html5/thumbnails/24.jpg)
Types
Matter
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Types
Matter
Substance
Mixture
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Types
Matter
Substance
Mixture
CompoundElement
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Types
Matter
Substance
Mixture
CompoundElement
Metal Nonmetal
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Types
Matter
Substance
Mixture
CompoundElement
Metal Nonmetal Ionic
Molecular
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Types
Matter
Substance
Mixture
CompoundElement
Heterogeneous
Homogeneous
Metal Nonmetal Ionic
Molecular
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Types
Matter
Substance
Mixture
CompoundElement
Heterogeneous
Homogeneous
Metal Nonmetal Ionic
Molecular
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What type of matter?
barium chlorine gas tin (II) chloride
sulfur dioxide water Gatorade
wood solid sulfur silver (I) oxide
air barium sulfide tossed salad
sodium oxide sulfuric acid ammonia
brass stainless steel salt water
18k gold nitrogen dioxide
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Physical properties
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Physical properties
• melting point• boiling point• shape • luster• size of pieces• crystal
structure
• hardness• malleability• ductility• density• color• mass
• volatility• state• temperature• conductivity• magnetism• volume• solubility
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How would you separate…
• A mixture can be separated into its components by physical means.
• A compound can be separated into simpler substances by chemical means only
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How would you separate…
…the two components of saltwater?
Contents:
Salt and water!
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How would you separate…
• By evaporating or boiling off the water, leaving the salt
• The hydrogen and oxygen in H2O or the sodium and chlorine in NaCl can be separated only by chemical reactions!
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How would you separate…• …answers might include…
Vaporizing
Sorting
Distilling
Dissolving
Liquefying
Filtering
Freezing….
…all physical changes
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How would you separate…
1) A solution of alcohol and water?2) Mud (water and silt)?3) A mixture of chalk dust and water?4) A mixture of chalk dust and powdered
sugar?5) Beans and rice?6) Ripe and unripe tomatoes?7) The carbon and oxygen in carbon dioxide?
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Chemical Reactions
• When a chemical reaction occurs
new substances are formed!
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For example
• Water can be separated into hydrogen and oxygen gas (by chemical means only!)
• We write:
H2O H2 + O2
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For example
• Water can be separated into hydrogen and oxygen gas (by chemical means only!)
• We write:
H2O H2 + O2
“forms” “and”
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For example
• Water can be separated into hydrogen and oxygen gas (by chemical means only!)
• We write:
H2O H2 + O2
Or, better yet
2 H2O2 H2 + O2
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For example
2 H2O2 H2 + O2
• The water is gone
• The new hydrogen and oxygen gasses have new chemical and physical properties
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Watch
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Watch
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Watch
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Watch
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Watch
2 H2O 2 H2 + O2
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2 H2O22 H2O + O2
(hydrogen peroxide forms water & oxygen gas)
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2 H2O22 H2O + O2
(hydrogen peroxide forms water & oxygen gas)
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2 H2O22 H2O + O2
(hydrogen peroxide forms water & oxygen gas)
2 H2O2 2 H2O + O2
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First rule of reactions!
• Matter is neither created, nor destroyed.
• The mass before the reaction is the same as the mass after the reaction
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First rule of reactions!
• Matter is neither created, nor destroyed.
• The mass before the reaction is the same as the mass after the reaction
• This is called the law of conservation of mass
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2 H2O22 H2O + O2
Reactants Products
![Page 55: Unit 1 Matter “If we all did the things we are capable of doing, we would literally astound ourselves.” Thomas A. Edison](https://reader030.vdocuments.us/reader030/viewer/2022032707/56649e555503460f94b4cf66/html5/thumbnails/55.jpg)
2 H2O22 H2O + O2
(hydrogen peroxide forms water & oxygen gas)
Reactants Products
![Page 56: Unit 1 Matter “If we all did the things we are capable of doing, we would literally astound ourselves.” Thomas A. Edison](https://reader030.vdocuments.us/reader030/viewer/2022032707/56649e555503460f94b4cf66/html5/thumbnails/56.jpg)
2 H2O22 H2O + O2
(hydrogen peroxide forms water & oxygen gas)
Reactants Products
![Page 57: Unit 1 Matter “If we all did the things we are capable of doing, we would literally astound ourselves.” Thomas A. Edison](https://reader030.vdocuments.us/reader030/viewer/2022032707/56649e555503460f94b4cf66/html5/thumbnails/57.jpg)
Same atoms = same mass
(hydrogen peroxide forms water & oxygen gas)
Reactants Products