7.4-7.6 - States of matter: The state of matter has a...

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1 States of matter: Fixed shape Fixed position Variable shape Some molecular movement Fast molecular movement The state of matter has a dramatic effect on the outcome The stuff of chapter 8. Section 7.4 Section 7.5 Force between like molecules Result in: viscosity and surface tension Cohesive Force Adhesive Forces Force between unlike molecules Result in: meniscus Section 7.5 Viscosity resistance of liquids to flow Low viscosity vinegar tiny molecules (H 2 O and HC 2 H 3 O 2 ) It’s a tangling issue, just like hair High viscosity corn syrup large molecules Section 7.5 Surface tension energy required to increase the surface area of a liquid It’s a glue issue. High surface tension the liquid molecules are attracted to each other example: water beads Low surface tension where the liquid molecules don’t have much glue example: acetone runs everywhere
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2 Section 7.5 concave convex strong adhesive forces between H 2 O and glass (Si-O-H)
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7.4-7.6 - States of matter: The state of matter has a...

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