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CEM 141 Chapter 1 | Questions, Answers & Exam Review 2026/2027

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CEM 141 Chapter 1 | Questions, Answers & Exam Review 2026/2027

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Institution MSU CEM 141

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CEM 141 Chapter 1 | Questions, Answers & Exam Review 2026/2027

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CEM 141 Chapter 1
A 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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