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Published byIlene Banks Modified over 6 years ago
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Chemistry and Matter Chemistry-__________________________________________________________________________________________________________________________________________ Composition? Structure? Properties?
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Chemistry and Matter Chemical – __________________________________________________________________________________________________________________ Is there one kind of “Chemistry”?
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Chemistry and Matter Branches _________ Inorganic
Analytical Biochemical _________ ________
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Scientific Method What is it??? ____________________________________________________________________________ Four Steps: 1. _______ - collect data (qualitative – description / quantitative – numerical) 2. ___________ – proposed explanation that is testable 3. _____________ – is the hypothesis correct? 4. ________ – generalization that explains fact or phenomenon
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By definition they are different…
Weight vs. Mass Are they the Same? Weight – measure of the earth’s gravitational attraction for matter Mass – measure of the quantity of “matter” By definition they are different… How would your weight change on the moon? On a mountain top? On the Sea floor? Weight Mass Matter ________________________________________ 2. _______________________________________
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Remember: Bonded together Just mixed up
Mixed up completely (uniform) Mixed chunks you can see (not uniform)
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Physical Change vs. Chemical Change
__________________________________________________________________ ex. Pounding…tearing into pieces…pulling…melting a substance…heating…boiling a substance Chemical Change _________________________________________________________________ Ex. rxn with H2O…rxn with acid or base…combustion Indications of a Chemical Change: 1. Change in energy Endothermic – ___________________________ Exothermic – _________________________ 2. Production of gas 3. ______________________ 4. Formation of a precipitate (solid)
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Properties of Matter Chemical Property – ________________________________________________________________________________________________________________________________________________ Physical Property – ________________________________________________________________________________________________________________________________________________
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Properties of Matter Extensive – ____________________________________________________________________________________________________________________________________ Intensive – ____________________________________________________________________________________________________________________________________
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SOLID LIQUID GAS Fills container Highest density Middle density
Lowest density Not compressible Little movement Some movement
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Energy ___________________________
Speaking of … Energy ___________________________ 2 Types are below ____________________– energy due to its position or composition ____________________– energy in motion TNT
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Periodic Table of Elements
___________ _______________ (On this side of the blue staircase) (On this side of the blue staircase) ___________ (Vertical columns) __________ (Horizontal columns) ____________ (Touch the blue staircase) blue staircase
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