Ascientific theory can be defined as a well-supported and widely accepted explanation of nature. according to this definition, which statement describes a scientific theory.
a) energy can be neither created nor destroyed.
b) f = ma; force equals mass times acceleration.
c) for every action, there is an equal and opposite reaction.
d) the earth’s magnetic field is generated by a conducting fluid in its core.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change. when the temperature in a room increases from 25°c to 33°c, changes from a solid to a liquid. in a lab, methane and nitrogen are cooled from -170°c to -200°c. the methane freezes and the nitrogen . when gold is heated to 2,856°c it changes from a liquid to a .

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

Determine the empirical formula for succinic acid that is composed of 40.60% carbon, 5.18% hydrogen, and 54.22% oxygen.