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Questions and Answers
Match the following branches of chemistry with their descriptions:
Match the following branches of chemistry with their descriptions:
Physical chemistry = Foundational branch of chemistry Biochemistry = Chemistry of living things Analytical chemistry = Study of the composition of materials Theoretical chemistry = Use of mathematics to understand chemical behavior
Match the following terms with their definitions:
Match the following terms with their definitions:
Accuracy = Closeness of a measurement to the exact value Precision = Consistency or reproducibility of a measurement Kinetic energy = Energy of motion Isotopes = Atoms of the same element that differ in mass number
Match the states of matter with their characteristics:
Match the states of matter with their characteristics:
Solid = Has a definite shape and volume Liquid = Has a definite volume but takes the shape of its container Gas = Particles possess the greatest kinetic energy Plasma = State of matter with highly charged particles
Match the following elements with their abundance description:
Match the following elements with their abundance description:
Match the following terms to their charges:
Match the following terms to their charges:
Flashcards
Accuracy
Accuracy
The closeness of a measurement to the true or accepted value.
Precision
Precision
The consistency or reproducibility of a measurement. Repeated measurements give similar results.
Kinetic energy
Kinetic energy
The energy associated with the movement of particles. Higher kinetic energy means faster movement.
Isotopes
Isotopes
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Ion
Ion
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Study Notes
Chemistry Study Guide
- Chemistry: The branch of science dealing with the composition, structure, and properties of matter.
- Physical Chemistry: A foundational branch of chemistry, underpinning other areas.
- Biochemistry: The study of chemical processes within living organisms.
- Scientific Method Steps: Observing, hypothesizing, experimenting.
- Accuracy: How close a measured value is to the true value.
- Precision: How consistent or reproducible measurements are.
- Kinetic Energy: The energy associated with motion.
- States of Matter: Solid, liquid, and gas, differing in the kinetic energy of their particles. Gases have the highest kinetic energy.
- Most Abundant Elements: Hydrogen in the universe, oxygen in Earth's crust.
- Dalton's Atomic Theories: Law of definite composition and law of multiple proportions.
- Evidence of Chemical Change: Formation of a gas, precipitate, or liberation of energy.
- Isotopes: Atoms of the same element with different mass numbers, due to varying neutron numbers.
- Atomic Identity Determination: The number of protons in the nucleus.
Atomic Structure and Data
- Atomic Mass Unit (amu): The unit used to measure atomic mass.
- Ion: An atom or molecule with a net electrical charge, resulting from unequal numbers of protons and electrons.
- Cation: Positively charged ion (fewer electrons than protons).
- Anion: Negatively charged ion (more electrons than protons).
Table Completion
- Symbol, Z, A, N, Number of electrons, Electrical charge: Table showing atomic structure data for elements He, Pb, B, and Ag. Note Z(atomic number), A(mass number), N(neutron number), electronic charge, and corresponding symbol.
Conversion of Units
- Celsius to Fahrenheit, Fahrenheit to Celsius Examples: Provides examples for converting temperatures between both scales.
- Density Calculations Examples: Gives examples to calculate density from mass and volume.
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