Chapter 4 Review Atoms and the Periodic Table
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What is an atom?
Who is John Dalton?
What did Bohr discover?
Who is Mendeleev?
What are the subunits of an atom and their charges?
What does the nucleus of an atom contain and what are their charges?
Electrons are found where in in atom and what is their charge?
What are the electrons in the outermost energy level called?
How are elements in the periodic table arranged?
What is the difference between the elements in a family vs. elements in a period?
What is an isotope?
In element chlorine 35 how many protons, neutrons and electrons does it have?
What are alkali metals?
An atom has mass of 11 amu and has 5 electrons what is its atomic number?
Elements in the same group of the periodic table have what in common?
Most of the elements nit he periodic table are considered to be what?
What are halogens?
What are noble gases?
What is a semiconductor?
What unit is used for atomic masses?
What is atomic mass?
What is the periodic law?
What is the Avogadro’s constant equation?
What is a valence electron?
25. List the family each element belong to: neon, sodium, chlorine, silicon, calcium, and gold
26. For the element Carbon explain what the atomic number is the symbol, and average of
atomic mass.
27. For the element Chlorine 35 how many protons, neutrons and electrons are there?
28. Explain what an atom is and Draw and label the three parts that make it up show their charges.
29. Why do semiconductors deserve their name?
30. Explain the difference between alkali metals and alkaline earth metals and give examples of
each.