MST Chemistry Mid-Term Review
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- Developed the Periodic Table we use today
- Mosley
- Discovered the nucleus with alpha particles
- Rutherford
- Discovered atoms contain negative charges
- Thompson
- Postulated the existance of the atom
- Democrities
- Developed the atomic theory
- Dalton
- Stated that electrons circle the atom in fixed orbitals
- Bohr
- Was into theoretical Chemistry and Physics
- Einstein
- Was known as the father of chemistry
- Lavasiore
- Developed the first P.T.
- Mendeeleve
- How many protons, electrons, and neutrons does a Stannic Ion have? What is the charge?
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50p+
46e-
69n
Sn+4 -
Name the cmpd:
NH4CH3COO - Ammonium Acetate
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Write the formula:
Manganese(III) Chloride - MnCl3
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Write the formula:
Mercury(I) Sulfide - Hg2S
- Window Glass; Element, Compound, Homomixture, Heteromixture?
- Compound
- 1 meter=_________ nanometers
- 1,000,000,000 or 10^9
- Calculate the energy in joules of a photon of violet light having a wavelength of 400 nm.
- 4.966187e-19 J
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One meter equals 1.094 yard.
Exact or Inexact? - Inexact
- 550 mL to quarts
- .58 quart
- (4.067)(0.08206)(378.7)/(0.935)
- 135
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Higher ionization energy
K or Mg - Mg
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Larger size
Cl or F - Cl
- A 46.2 g sample of copper is heated to 95.4°C and then placed in a calorimeter containing 75.0 g water at 19.6°C. The final temperature of the metal and water is 21.8°C. Calculate the specific heat capacity of copper, assuming that all the heat lost b
- .20 J/g°C
- A certain substance strongly absorbs infrared light having a wavelength of 3.75 µm. What is the frequency of this light in hertz?
- 7.99e13 Hz
-
Name the cmpd:
CaCrO4 - Calcium Chromate