What do the columns on the periodic table represent

What did Rutherford's model of the atom include that Thomson's model did not have?

A sample of gas has a volume of 5.58 l at a pressure of 715 mm hg. what is the volume of the gas when the pressure of the gas is increased to 755 mm hg?

Salt are know as atom elements covalent compound ionic compound

Which of the following parts of a circuit would be considered a load? Justify your answer by explaining your choices • light • switch • motor • battery

Methane at 10 mpa and 300 k is heated at constant pressure until its volume has increased by 80 percent. determine the final temperature using the ideal gas equation of state and the compressibility factor. which of these two results is more accurat

What are the basic building blocks of matter? A) molecules B) atoms C) electrons D) compounds

How does an atom with too few neutrons relative to protons undergo radioactive decay? * by converting proton to a neutron by converting a neutron to a proton by emitting an alpha particle

What is the chemical formula for the compound formed between sodium and iodine?

8. Write a balanced chemical equation showing how you could prepare each of the following salts from an acid-base reaction: KNO3, NaBr, and Cas.

Is calcium carbonate a compound element or mixture?