The Atom: From Idea to Theory The Structure of the Atom Counting Atoms

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Presentation transcript:

The Atom: From Idea to Theory The Structure of the Atom Counting Atoms Ch. 3 REVIEW The Atom: From Idea to Theory The Structure of the Atom Counting Atoms

Section 1 Who coined the term “atom?”

Section 1 Explain the law of conservation of mass

Section 1 Explain the law of definite proportions

Section 1 Explain the law of multiple proportions

Section 1 What is a chemical reaction?

Section 1 Who proposed the Atomic Theory?

Section 1 State 2 of the 5 parts of Dalton’s Atomic Theory

Section 1 Distinguish between scientific theory and a scientific law

Section 1 Three compounds containing potassium and oxygen are compared. Analysis shows that for each 1.00 g of O, the compounds have 1.22 g, 2.44 g, and 4.89 g of K, respectively. Show how these data support the law of multiple proportions.

Section 2 Define atom

Section 2 Identify the 2 regions of an atom… state what subatomic particles are found in each.

Section 2 JJ Thomson is given credit for discovering what?

Section 2 What did JJ Thomson use in his experiments that led to the discovery of the electron?

Section 2 What atomic model did JJ Thomson propose? Describe this model.

Section 2 Before Thomson’s plum pudding model, the model that existed and was widely accepted was the solid sphere model. Who proposed the idea of the solid sphere model?

Section 2 Explain Rutherford’s gold foil experiment (procedure & conclusion)

Section 2 What is the name of the atomic model proposed by Rutherford based on his gold foil experimental results?

Section 2 Niels Bohr proposed the _________________ Model of atomic structure. Describe this model.

Section 2 What two subatomic particles are found in the nucleus? What holds these particles together in the nucleus?

Section 2 State the location, charge, and relative masses of the 3 subatomic particles

Section 3 Define atomic number

Section 3 Define mass number (or atomic mass)

Section 3 What units are used to described the mass #?

Section 3 What is the name of the instrument used to measure the atomic mass of an atom?

Section 3 Explain what isotopes are.

Section 3 Do isotopes of an element have different atomic #’s or different mass #’s?

Section 3 What is a nuclide?

Section 3 Write the 3 isotopes of Hydrogen in hyphen notation.

Section 3 Write the nuclear symbol for uranium-235 (use the periodic table!)

Section 3 Define the term mole

Section 3 What is Avogadro’s Number?

Section 3 Define molar mass

Section 3 What is the average atomic mass of an element?

Section 3 What is meant by the term “percent abundance” of an element?

Section 3 Isotopes of an element have different masses. Does this cause them to differ in their chemical behavior?

Section 3 How do you determine how many atoms are in a certain amount of moles of a substance?

Section 3 How do you determine how many atoms are in a certain amount of grams of something?

Section 3 How do you determine how many moles are in a certain amount of grams of something?