2.3.5 Practice_ Atomic Structure.docx

2.3.5 Practice_ Atomic Structure.docx - Isaiah Knuth...

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Isaiah Knuth Question 1: Laws of Conservation of Matter and Energy (2 points) a. Law of conservation of matter i. What does the law say about matter? That matter can be neither created or destroyed. ii. What about matter can change and what does not change, according to the law? Matter can change volume and shape. The amount (number of atoms) of matter does not change. b. Law of conservation of energy i. What does the law say about energy? That energy cannot be created or destroyed, just change forms. ii. What about energy can change and what does not change, according to the law? The forms of energy can change. but not the amount of energy being used. Question 2: Phases of Matter (2 points) a. What are the four states, or phases, of matter? Describe the shape and volume properties of each phase. Can they change, or are they fixed? i. Solid Shape: Fixed Volume: Fixed ii. Liquid Shape: Lacks fixed shape Volume: Fixed iii. Gas Shape: No definite shape
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Volume: No definite volume iv. Plasma Shape: Not fixed Volume: Not fixed b. Matter can change from one phase to another. Describe the changes in shape and volume when the following phase changes occur. i. From solid to liquid (melting) Shape: Goes from fixed to lacking shape Volume: Stays the same ii. From liquid to solid (freezing or hardening) Shape: Goes from lacking shape to fixed Volume: Stays the same iii. From liquid to gas (evaporation) Shape: Goes from lacking shape to indefinite Volume: Goes from fixed to indefinite iv. From gas to liquid (condensation)
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