PreparED Study Materials
CHEM 1030: Intro Chemistry Survey
School: East Tennessee State University
Number of Notes and Study Guides Available: 12
Notes
Study Guides
Videos
Specific Rotation Calculation: Polarimeter Demystified
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to calculate specific rotations of samples using a polarimeter in this informative chemistry tutorial. Explore optical activity and learn step-by-step calculations for two real-world examples. Enhance your understanding of specific rotation and its application in chemical analysis.
Why is Chloromethane Polar but Methane Nonpolar? Decoding Molecule Sha
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the polar nature of Chloromethane and the nonpolar characteristics of Methane. Understand the impact of electronegativity differences and bond types. Deciphering molecular polarity through the lens of tetrahedral structures.
Lattice Energy: Always Positive; Hydration Energy: Always Negative
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video we clarify why lattice energy in solids is always a positive value due to the energy needed to separate ions making it an endothermic process. On the flip side hydration energy is always negative as it releases heat when ions dissolve in water making it an exothermic reaction. We use sodium chloride as a real-world example to illustrate these crucial thermodynamic concepts
Classify: (a) Mixture (b) Element (c) Mixture (d) Compound
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, we classify substances as elements, compounds, or mixtures, with air and soy sauce as mixtures, iron as an element, and table salt as a compound.
Endothermic Rxn: Ba(OH)2·8H2O & NH4NO3 Heat Dynamics
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the endothermic reaction between Ba(OH)2·8H2O and NH4NO3 observing its impact on surroundings like the freezing water. Discover why touching the beaker feels cold and learn about heat transfer in such chemical reactions. This video is an insightful demonstration of heat absorption in chemical reactions.
Moles of H in Samples: H?O, NH?, N?H?, C??H??
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to calculate the number of moles of hydrogen in different chemical samples, including H?O, NH?, N?H?, and C??H??.


























