Scientists classify matter into various groups. Which group is typically described by the characteristics listed below? -Usually solid at room temperature
-Can be bent or changed in shape without breaking
-Shows a shiny luster when scratched or polished

Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ