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Questions and Answers
What is the correct order of naming for polyatomic anions with more than 2 oxygens?
What is the correct order of naming for polyatomic anions with more than 2 oxygens?
Which ion has one less oxygen atom than the chlorate ion?
Which ion has one less oxygen atom than the chlorate ion?
What is the name of CO32− after adding H+?
What is the name of CO32− after adding H+?
What does each H+ do to the negative charge of an oxyanion?
What does each H+ do to the negative charge of an oxyanion?
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Which prefix is added to indicate 'one more O than chlorate'?
Which prefix is added to indicate 'one more O than chlorate'?
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Study Notes
Introduction to Chemistry
- Chemistry studies matter and its transformations, playing a critical role in science and technology.
- Influences daily life in health, energy, materials, and agriculture.
- Employs the scientific method involving experiments, data collection, interpretation, hypothesis formulation, and theory development.
Measurement
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SI Units: The Système International d’Unités (SI) is the most widely used measurement system with seven basic physical quantities:
- Mass: Kilogram (Kg)
- Length: Meter (m)
- Time: Second (s)
- Electric current: Ampere (A)
- Temperature: Kelvin (K)
- Luminous intensity: Candela (cd)
- Amount of substance: Mole (mol)
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Derived SI Units: Other units can be derived from basic SI units:
- Area: Square Meter (m²)
- Volume: Cubic Meter (m³)
- Speed: Meter per second (m/s)
- Density: Kilogram per cubic meter (kg/m³)
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Non-SI Units: Frequently encountered non-SI units include:
- Mass: Pounds (lb), tonnes (t)
- Length: Feet, inches, miles
- Temperature: Degrees Celsius (°C)
- Energy: Calories (cal)
- Pressure: Atmosphere (atm), psi
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Metric Prefixes: Utilize metric prefixes for succinct representation of large or small quantities.
Uncertainty in Measurement
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Significant Figures: Important in calculations. Final answers must retain the least number of significant figures from the measured values.
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Multiplication and Division: Result carries the same number of significant figures as the least precise value.
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Multiple Operations: The number of significant figures in the final answer depends on the last operation performed (either addition/subtraction or multiplication/division).
Classification of Matter
- Matter classified as elements, compounds, or mixtures, distinguished by their properties and compositions.
- States of Matter: Identify three states - solid, liquid, gas.
- Properties of Matter: Differentiate between physical properties (observable without changing composition) and chemical properties (observable during a reaction).
Atoms, Molecules, and Ions
- Atoms: Basic unit of matter, not divisible by chemical means.
- Molecules: Two or more atoms bonded together.
- Ions: Charged species formed when atoms or molecules gain or lose electrons.
Naming and Formulas
- Ability to name compounds and write their chemical formulas is crucial in chemistry.
- Calculate atomic, formula, and molecular weights using periodic table data and molecular compositions.
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Description
Test your knowledge on derived SI units with this quiz. The quiz covers areas such as area, volume, speed, acceleration, density, energy, pressure, and force, along with their respective SI unit abbreviations.
