chemistry..ugh..will you help?
1. A chemical formula written over the arrow in a chemical equation signifiesA. a byproduct B. a catalyst for the reactionC. an impurity D. the formation of a gas2. the most characteristic property of the noble gases is that theyA. are gases at ordinary temps. B.Are largely unreactiveC. have low boiling points D. are radioactive3.which of the following rules requires that each of the p orbitals at a particular energy level recieve Quantum Catalyst one electron before any of them can have two electrons?A. hund's rule B. the quantum ruleC. the aufbau principle D.the pauli exclusion principle4.if the s and p sublevels of the highest main energy level of an atom are filled, how manyy electrons are in that main energy level?A. 2 B. 16C.32 D.85.thye chemical formula for an ionic compound represents theA. numbers of atoms in each molecule.B. total number of ions in the crystal lattice.C. number of ions in each molcule.D. simplest ratio of the combined ions that balances total charges.6. precision pretains to all of the following exceptA. closeness of a measurement to an accepted vslue.B. reproducibility of measurements.C.sameness of measurements.D. agreement amoung numerical values.7.rutherford fired positively charged particles at metal foil and concluded that most of an atom's mass wasA. concentrated in the nucleus.B. in rings around the atomC. evenly spread thoughout the atom.D. in the electrons.
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