Answered: Helppp What are atoms? How did the…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter4: Chemical Foundations: Elements, Atoms, And Ions

Section: Chapter Questions

Problem 3QAP

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Similar questions

The introduction to this chapter states that everything is made of atoms, including ourselves. Does that affect the way you view human life? Do the atoms in our bodies follow the same physical laws as atoms in soil or rocks or water? If so, does this make human life any less unique?
Dalton’s original atomic theory proposed that all atoms of a given element areidentical. Did this turn out to be true after further experimentation was carried out? Explain.
One of the best indications of a useful theory is that it raises more questions for further experimentation than it originally answered. Does this apply to Daltons atomic theory? Give examples.
Scientists J. J. Thomson and William Thomson (Lord Kelvin) made numerous contributions to our understanding of the atom’s structure. Which subatomic particle did J. J. Thomson discover, and what did this lead him to postulate about the nature of the atom? William Thomson postulated what became known as the “plum pudding” model of the atom’s structure. What did this model suggest?
One of the best indications of a useful theory is that it raises more questions for further experimentation than it originally answered. How does this apply to Dalton’s atomic theory? Give examples.
Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element? Explain your answer.
Reaction of 2.0 L of hydrogen gas with 1.0 L of oxygen gas yields 2.0 L of water vapor. All gases are at the same temperature and pressure. Show how these data support the idea that oxygen gas is a diatomic molecule. Must we consider hydrogen to be a diatomic molecule to explain these results?
Are most elements found in nature in the elemental or the combined form? Why? Name several elements that are usually found in the elemental form.
How do isotopes of a given element differ? How are they similar?
In what way are isotopes of a given element always different? In what way(s) are they always the same?
A fundamental idea of Daltons atomic theory is that atoms of an element can be neither created nor destroyed. We now know that this is not always true. Specifically, it is not true for uranium and lead atoms as they appear in nature. Are the numbers of these atoms increasing or decreasing? Explain.
Reaction of 2.0 L of hydrogen gas with 1.0 L of oxygen gas yields 2.0 L of water vapor. All gases are at the same temperature and pressure. Show how these data support the idea that oxygen gas is a diatomic molecule. Must we consider hydrogen to be a diatomic molecule to explain these results?

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Helppp What are atoms? How did the study of atoms help start the study of chemistry?