
Concept explainers
Each of the statements below is true, but Dalton mighthave had trouble explaining some of them with his atomictheory. Give explanations for the following statements.
a. The space-filling models for ethyl alcohol anddimethyl ether are shown below.
These two compounds have the same composition bymass (52% carbon, 13% hydrogen, and 35% oxygen),yet the two have different melting points, boilingpoints, and solubilities in water.
b. Burning wood leaves an ash that is only a small fractionof the mass of the original wood.
c. Atoms can be broken down into smaller particles.
d. One sample of lithium hydride is 87.4% lithium bymass, whereas another sample of lithium hydride is74.9% lithium by mass. However, the two sampleshave the same properties.

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Chapter 2 Solutions
Chemical Principles
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