Chemistry - Chapters 3 & 4: The Atom And The Atom Structure

Describe how the model of the atom changed from the time of the Greek philosophers in (400 B.C.) to the time of Thomson and Rutherford (1900’s A.D.)?

Describe how the model of the atom changed from the time of the Greek philosophers in (400 B.C.) to the time of Thomson and Rutherford (1900’s A.D.)?

Briefly explain 4 parts of Dalton’s Atomic Theory

How big is an atom? Can you see an atom? Explain why or why not?

Whatare the three types of subatomic particles?

Proton, Neutron, and Electron

What is the PROTON’S Symbol, Charge, Location, and Approximate Relative Mass

• Symbol: p⁺

• Charge: +1

• Location: Nucleus of an atom

• Approximate Relative Mass: 1 amu (atomic mass unit).

What do PROTONS deterimine in an element

Protons determine the atomic number and identity of an element

What is the NEUTRON'S Symbol, Charge, Location, and Approximate Relative Mass

• Symbol: n⁰

• Charge: 0 (neutral)

• Location: Nucleus of an atom

• Approximate Relative Mass: 1 amu (atomic mass unit)

What is the ELECTRON'S Symbol, Charge, Location, and Approximate Relative Mass

• Symbol: e^-

• Charge: -1 (negative)

• Location: Orbiting the neucleus

• Approximate Relative Mass: 0 amu (atomic mass unit)

What does the ATOMIC NUMBER tell you? Where do you find the atomic number on the periodic table?

What does the MASS NUMBER tell you? Where do you find the atomic number on the periodic table?

What is the ELECTROMAGNETIC SPECTRUM? Name them.

List in order the seven colors of the visible light spectrum from HIgh energy to Low Energy

Which of the seven colors of the visible light spectrum has the highest energy? Lowest Energy?

Which of the seven colors of the visible light spectrum has the highest frequency? Lowest frequency?

Which of the seven colors of the visible light spectrum has the longest wavelength? Shortest wavelength?

What is a CATION and how does it form?

What is an ANION and how does it form?

What is an isotope? Name 2 ways that isotopes of the same element are different

How can there be more than 1000 different atoms when there are only about 118 different elements?

Laboratory: Explain how flame tests can be used to identify the metal present in an unknown compound? Explain how an atom’s electron emits light energy when excited.

How do you calculate the atomic mass of an element? What is the unit a.m.u?