Examlex
Select the correct past tense form of each verb. Some verbs are regular; others are irregular. Jeannie's sweater ________________ after it was accidentally thrown in the wash.
Chloromethane
A colorless and highly volatile compound, used as a refrigerant, propellant, and in the synthesis of other chemicals.
Lone Pairs
Pairs of valence electrons not involved in bonding, but which occupy space around an atom, influencing molecular shape and reactivity.
Electronic Configuration
An arrangement of electrons in an atom or molecule in specific energy levels (orbitals) according to the principles of quantum mechanics.
Formal Charge
A theoretical charge on an atom in a molecule, calculated by assuming equal sharing of electrons in bonds.
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Q30: For each of the following pairs of
Q31: Devin has been told he only has
Q35: For each of the following sentences, select
Q37: For each sentence below, select the correct
Q39: If the sentence is correct, select "correct."
Q105: Sandy knows she is going to die