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CEM 141 Chapter 1 Questions And Answers Rated A+ New Update Assured Satisfaction
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CEM 141 Chapter 1 Questions And Answers Rated A+ New Update Assured Satisfaction
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CEM 141 Chapter 1A law - ANS-tells you what
A scientific model - ANS-Can be a drawing or a graph or a diagram or an equation. We use
models to help us make sense by predicting what will happen and explaining how something
happens.
A scientific theory - ANS-the best available explanation of the evidence/data/observations
A scientific theory must be - ANS-testable and falsifiable
A theory - ANS-tells you why
According to the greeks - ANS-- earth had atoms that were cubic
- water had atom that were spheres
- iron had atoms that were made of spikes
All atoms and molecules attract each other - ANS-because of the attractive electrical forces
between them
atoms - ANS-- Individual nanoscale entities
Too small to see with eyes
Atoms - ANS-- Smallest distinguishable part of an element.
Attractions - ANS-lower the potential energy of the system
Cathode ray tube - ANS-glass tube consisting of two electrodes under very low pressure, when
high voltage is applied, cathode emits particles that move toward anode
Claim - ANS-The target of your explanation
constructing a scientific explanation - ANS-Claim
Evidence
Reasoning
Dalton's Atomic Theory - ANS-
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