Chemistry Exam 1 Review

Study Notes

Exam 1 Review - Spring 2025

Distinguish pure elemental substances, pure compounds, heterogeneous mixtures, and homogeneous mixtures using drawings.
Differentiate between ionic and molecular compounds through drawings.
Identify separation methods for various mixtures.
Differentiate between chemical and physical properties.
List all endothermic phase changes (sublimation, fusion/melting, vaporization).
List all exothermic phase changes (deposition, freezing, condensation).
Define extensive and intensive properties.
Understand metric prefixes and their conversion factors.
Apply significant figure rules for calculations.
Calculate simple averages and assess measurement accuracy and precision.
Convert between Kelvin and Celsius scales.
Calculate density (D = mass/volume) and relate mass, volume, and density.
Determine uncertainty and use correct significant figures in measurements.
Solve dimensional analysis problems.
Relate periodic table families and periods to element properties.
Recall names of groups on the periodic table.
Recognize historically significant scientists responsible for developing atomic structure models.
Calculate the percent composition of an element in a compound.
Identify the number of protons, neutrons, and electrons in isotopes and ions.
Determine the average atomic mass of an element based on isotopic masses and relative abundance.
Determine if elements are isotopes.
Distinguish between molecular and ionic compounds.
Determine empirical formulas.
Name ionic and molecular compounds. (Activity in class/video to follow)
Convert grams to moles (division by molar mass)
Convert moles to grams (multiplication by molar mass)
Convert moles to molecules/atoms (multiplication by Avogadro's number)
Convert atoms/molecules to grams of an element (division by Avogadro's Number)
Additional video content will be available by Thursday to cover material.