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Transcript of Chemistry Chemistry. What is Chemistry Chemistry: The physical science that deals with matter’s -...
![Page 1: Chemistry Chemistry. What is Chemistry Chemistry: The physical science that deals with matter’s - Composition -Properties - Changes Matter: anything that.](https://reader036.fdocuments.net/reader036/viewer/2022071718/56649efc5503460f94c0fe9f/html5/thumbnails/1.jpg)
Chemistry
Chemistry
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What is Chemistry
Chemistry: The physical science that deals with matter’s- Composition-Properties - Changes
Matter: anything that has mass = everything
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What does it include?
The study of:1) Chemicals2) Chemical reactions3) Chemical technologies4) Chemical toxicity (effects of chemicals on the
environment)
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Changes of matterChemical changes: AKA chemical reaction. When
a new substance with new properties if formed
VERSUS
Physical changes: When no new substances are formed.
eg. Boiling, Melting, Freezing
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Branches of Chemistry
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Branches of Chemistry
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Branches of Chemistry
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Branches of Chemistry
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Branches of Chemistry
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Branches of Chemistry
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Classifying Knowledge in Chemistry
Observation: - Direct form of knowledge that comes from
one of the five senses (something you saw, smelled, taste, heard or felt)
Types of Observations
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Classifying Knowledge
Qualitative Observations: Describes the qualities or changes of mattereg. The color, odor, or physical state (solid liquid gas)
Quantitative Observation:
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Classifying Knowledge
Qualitative Observations: Describes the qualities or changes of mattereg. The color, odor, or physical state (solid liquid gas)
Quantitative Observation: The degree of change in matter. It is a measurable value.eg. mass, weight, and force
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Observations and Interpretations
Interpretation: An indirect form of knowledge. Something you do not witness yourself (hence indirect). eg. Something you pick out of a text book
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Picking out Observed and Interpretative Information
1) Observation: Magnesium metal burns when held in a bunsen burner.
2) Using interpretation to explain observation:
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Picking out Observed and Interpretative Information
1) Observation: Magnesium metal burns when held in a bunsen burner.
2) Using interpretation to explain observation: Oxygen molecules collide with the magnesium
metal. Magnesium loses 2 electrons which are then picked up by oxygen. This creates oxygen and magnesium ions
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Types of Knowledge
Empirical: Observedeg. Aluminum foil turns red in color of copper chloride
Theoretical:
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Types of Knowledge
Empirical: Observedeg. Aluminum foil turns red in color of copper chloride
Theoretical: Explains or describes the observation using theoretical knowledgeeg. Copper ions gain electrons to form copper metal. Aluminum metals lose electrons and form aluminum ions.