Glossary of Chem midterm 2
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- What is the #1 gas in the air we breathe?
- How would you express the number 7200 to three significant figures?
- 7.20 X 10^3
- What is the name of the phase change from gas directly to solid?
- What is the #1 element in the Earth’s crust?
- Aluminum has an electron configuration
of 2-8-3. What do these numbers mean?
- Which metal is not solid at room temperature?
- How many celsius degrees between the melting and boiling points of water?
- How many objects are there in a mole?
- 6.02 (10^23)
- What is the total number of protons, electrons, and neutrons in an atom of carbon-12?
- What is the color of visible light with the least energy?
- The heat of fusion involves what 2 phases of matter?
- What is the SI unit for energy?
- What is the name of a diatomic gas in Group 16?
- How many significant figures are there in the number 3.0?
- What is the difference between atomic number and mass number?
- Atomic number is number of protons. Mass number is sum of protons and neutrons.
- What is the meaning of the symbols in the equation E = hv?
- The amount of energy a quantum of light has equals the frequency times Planck's constant (6.63) (10^-34)
- What is the name of the group that contains bromine?
- What is the formula for density?
- density = mass/volume
- What is body temperature in Celsius?
- What atom is the basis for the definition of the atomic mass unit (amu)?
- What is the general name for the elements in the d-block?
- Transition metals
- In what type of bond do both electrons come from one atom?
- ? Ionic bond
- How many orbitals are there in a p sublevel?
- How many electrons are there in a double bond and in a triple bond?
- 4 in a double bond, 6 in a triple bond
- What type of energy is potential energy?
- ? Stored energy
- Burning a log is what type of change?
- Chemical change
- What is the name of the group that includes calcium?
- Alkaline Earth metals
- Who is credited with the gold foil experiment?
- Regarding separation, what is the difference between a mixture and a compound?
- A mixture can be physically seperated through chromatography, sometimes the use of magnets, distillation, filtration, and a seperatory funel. The only way to separate a compound is chemicaly through electrolysis
- What are 3 properties of metals?
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