Can someone help me with these chemistry questions?

1. Describe the evidence that supports the idea that particles have a property we call charge.
2. Use the Thomson model of the atom to account for the fact that neutral atoms can become either positively or negatively charged by the loss or gain of electrons.
3. List properties that distinguish metals from non-metals.
4. Describe the evidence that distinguishes ionic from molecular or atomic solids.
5. Given the formula of an ionic or molecular substance, state its name.
6. Given the name of ionic or molecular substance, write its formula.
7. From the name or formula of a substance determine whether that substance is ionic or molecular.

You mix the pks of succinic acid are 4.21 and 5.64. how many gramsa graduate student at sdsu wants to measure the activity of a particular enzyme at ph 4.0. to buffer her reaction, she will use a buffer system based on one of the acids listed below, which acid is most appropriate for the experiment? of monosodium succinate (fw = 140 g/mol) and disodium succinate (fw = 162 g/mol) must be added to 1 l of water to produce a solution with a ph 5.28 and a total solute concentration of 100 mm? (assume the total volume remains 1 liter, answer in grams monosodium succinate, grams disodium succinate, respectively.) volumes of 0.05 m nah2po4 and 0.05 m na2hpo4 (pk's for phosphoric acid are 2.15, 6.82 and 12.38). which of the following best describes the resulting solution?

What are the first three quantum numbers for the electrons located in subshell 2s?

What type of matter is made of only one kind of atom