Download AP Chemistry Unit 1 Essential Questions Screencast 1

AP Chemistry
Unit 1
Essential Questions
Screencast 1-1 Introduction to the Periodic Table
1. What is an element?
2. How are the symbols for the elements determined?
3. How is the order of the elements determined on the modern periodic table?
4. What are the main regions of the periodic table?
5. What are the special named groups and where are they located (group #)?
Screencast 1-2 Compounds, Mixtures and Classification of Matter
1. How are compounds separated?
2. What are the 2 types of mixtures and what are their differences?
3. How are mixtures separated?
4. Compare and contrast physical and chemical properties.
5. What is a chemical reaction?
6. How does distillation work?
7. What is filtration used for and how does it work?
Screencast 1-3 Units of Measurement
1. What is the SI unit of temperature?
2. What are the three best instruments to use to measure volume?
3. When reading a scale, how is the last digit estimated?
4. Compare and contrast accuracy and precision?
Screencast 1-4 Significant Figures
1. How are the significant figures in the answer determined in an addition problem?
Multiplication?
2. How many numbers are to the left of the decimal in correct scientific notation?
3. When multiplying numbers in scientific notation, what do you do to the exponents?
Screencast 1-5 Density
1. What is the formula used to measure density?
2. What are the units for density in a gas, liquid and a solid?
Screencast 1-6 Dimensional Analysis
1. When converting a unit, how is the conversion factor set up? (what’s on top and bottom)
2. Correct answers in chemistry always include what 3 things?
3. When converting units with a power what is important to remember?
Screencast 1-7 Basic Atomic Structure, Isotopes and Mass Spectroscopy
1. What are the 3 subatomic particles and where are they located inside the atom?
2. What are the relative masses of the 3 particles?
3. What is the atomic mass?
4. What is an isotope?
5. How is the average mass of an element determined?
6. What is shown by the mass spectrum graph?
Screencast 1-8 Moles
1. What is Avogadro’s number?
2. What is molar mass?
3. Find the molar mass of water H2O?
4. How do you convert between grams and moles and moles and Avogadro’s number?
Screencast 1-9 Molecules and Ions
1. What is a molecules?
2. What are the 7 diatomic elements?
3. What does a subscript in a chemical formula indicate?
4. What is gained or lost when an ion is formed?
5. Where are the elements that form cations located on the periodic table? Anions?
6. How is an ionic bond formed?
Screencast 1-10 Ionic Compounds and Ionic Nomenclature
1. How is an ionic compound recognized?
2. What are the 4 types of ionic compounds?
3. When naming an ionic compound, how do you change the ending of the anion?
4. How do you determine the charge of a multiple charged cation?
Screencast 1-11 Molecular, Acid and Hydrate Nomenclature
1. How is a molecular compound recognized?
2. What is used to determine the number of atoms when naming molecular compounds?
3. When naming an acid, how is the ending of the anion changed?
4. What is an Ionic hydrate?
Screencast 1-12 Types of Formulas and Percent Composition
1. Compare and Contrast Empirical and Molecular Formulas.
2. What is the formula to determine the percent composition of a molecule?
Screencast 1-13 Empirical and Molecular Formula Calculations
1. Write the steps used to find the empirical formula of a compound.
2. Can a molecular formula also be an empirical? Explain.
3. How can you easily determine an empirical formula from a molecular?