PORTAGE LEARNING CHEM 103 FINAL EXAM

PORTAGE LEARNING CHEM 103 FINAL EXAM / CHEM
105 FINAL EXAM PORTAGE LEARNING LATEST ACTUAL
EXAM QUESTIONS AND CORRECT DETAILED ANSWERS
(CORRECT VERIFIED ANSWERS) NEWEST UPDATED
VERSION |ALREADY GRADED A+

Element - ANSWER: A pure substance made of only one kind of atom

Compound - ANSWER: Substance formed from many atoms bonded together

Mixture - ANSWER: A combination of two or more substances that are not
chemically combined

Substance - ANSWER: matter with a composition that is always the same

What does A mean in an isotope? - ANSWER: Number of Protons and Neutrons

What does Z mean in an isotope? - ANSWER: Number of Protons

What does X mean in an isotope? - ANSWER: Symbol for the element

ionic compound - ANSWER: Cation + Anion / Metal + nonMetal

polyatomic ion - ANSWER: an ion made of two or more atoms joined by covalent
bonds

Binary Compounds - ANSWER: Compounds composed of nonmetal + nonmetal

Acids - ANSWER: compounds that form hydrogen ions when dissolved in water
(FORMULA CONTAINS AT LEAST ONE H+ ION)

Binary acid naming - ANSWER: hydro___ic acid

Oxyacid - ANSWER: contains hydrogen, oxygen, and a third nonmetal element

Oxyacid naming rules (Anions) - ANSWER: Anion:
1. hypo__ite
2. ___ite
3. ___ate
4. per___ate

Oxyacid naming rules (acids) - ANSWER: Acid:
1. hypo___ous acid
2. ___ous acid

, 3. ___ic acid
4. per___ic acid

Oxidation state - ANSWER: Number of electrons an atom uses to form bonds

Oxidation State Rules - ANSWER: •Oxygen: -2
•Alkali metals: +1
•Alkaline earth metals: +2
•Halogens: -1
•Hydrogen: +-1
• Group 15, 16 or 17 nonmetals: -3, -2, or -1

Refraction - ANSWER: Bending of light

Diffraction - ANSWER: Interference of light

quanta - ANSWER: packets of energy

blackbody radiation - ANSWER: Thermal EMR in which atoms can only change their
energy by absorbing or emitting light, in discrete energy packets called quanta

photoelectric effect - ANSWER: The emission of electrons from a metal when light
shines on the metal

atomic spectra - ANSWER: The range of frequencies of light emitted by atoms

Work function - ANSWER: the amount of energy needed to dislodge an electron from
the surface of a material

Bohr model of the atom - ANSWER: Model of the atom with a positive nucleus and
electrons orbiting in energy levels

What does Z represent? - ANSWER: Charge on nucleus

What is h? - ANSWER: Plancks constant

What is n? - ANSWER: energy level

ground state - ANSWER: The lowest energy state of an atom

first excited state - ANSWER: n = 2

wave-particle duality - ANSWER: the concept that all matter and energy exhibit both
wave-like and particle-like properties

Uncertainty Principle (Heisenberg) - ANSWER: OMG BREAKING BAD REFERENCE (LIKE
THE GUY FROM THE SHOW) ((THE ONE WITH THE METH))