Semester 1 Review Flashcards
Define volume, mass, and weight
Volume: the amount of space an object occupies
Mass: the amount of matter in an object
Weight: the force produced by gravity acting on mass
Define solids, liquids, and gases
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Define physical & chemical properties
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Give examples of physical & chemical properties
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Define physical & chemical changes
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Give examples of physical & chemical changes
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Define reactants and products
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Give evidence of chemical changes
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Define accuracy & precision
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Define atom
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Define pure substances & mixtures
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Define elements and compounds
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Define molecule
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What are the 2 types of mixtures?
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Compound vs mixture
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What are the 7 diatomic elements?
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What are the methods for separating mixtures?
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Define energy, heat, and temperature
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Define endothermic & exothermic processes
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Define theory, hypothesis, and law
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What is the law of conservation of mass?
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What is the law of definite proportions?
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What is the law of multiple proportions?
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What parts of Dalton’s atomic theory are false?
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Who discovered the electron, neutron, and proton?
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What did JJ Thomson & his experiment do?
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What did Rutherford & his experiment do?
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List & define/explain different models of the atom
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What are the 2 regions of the atom?
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Define atomic & mass #’s
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Define orbital, ground state, & excited state
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Define the Pauli exclusion principle
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Define the Aufbau principle
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Define Hund’s rule
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What is the EC of Li (3e-), O (8e-), Cl (17e-)
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What is the shorthand EC of Pb (82e-) and Ag (72e-)
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What is the orbital diagram of Li (3e-), O (8e-), Sn
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List & describe scientists involved with creation of periodic table in order
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Define the law of octaves
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List and describe the properties of each elemental group
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What are the properties of metals & nonmetals?
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What is an alloy?
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How many elements are found in nature?
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What were the 1st elements created after the Big Band?
H & He
What are the elements most commonly found in living things?
C, O, H, S, P, N
Define transmutation & the 2 types of it
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Define synthetic elements
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List particle accelerator types
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Define the octet & duet rules
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Define ion, cation, and anion
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List & describe the process of ionic bonding
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List the properties of ionic compounds
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How does a covalent bond form
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Define molecular orbital, bond length, and bond energy
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How does covalent bonding affect an atom’s potential energy and stability?
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Is energy released or taken in when a covalent bond forms?
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What is the correlation between bond length and bond strength?
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Define polar & nonpolar covalent bonds
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How do you know a covalent bond is polar or nonpolar?
EN value < 0.5 = NP
EN value > 0.5 = P
Define dipole
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List properties of covalent compounds
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Define resonance
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What does the VSEPR theory say
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List and describe the different lewis structure shapes
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What is the percent composition formula?
(total mass of element in compound / molar mass of compound) x 100
What is the avg atomic mass formula?
(mass isotope 1 x decimal form of % of isotope 1) + (mass isotope 2 x decimal …) …
Define limiting reactant and excess reactant
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Define actual and theoretical yield
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What is the percent yield formula?
(actual yield / theoretical yield) x 100