Answer:
Permanent Magnets are always magnetic.
Temporary Magnets loose their magnetizing power after the source is removed. (outside a magnetic field)
Electromagnets are made by sending electric coil around an iron rod. (I.e. Nail, coil, and batteries can pick up paperclips)
B. the shape of a molecule determines its properties and interactions
25*5= 225 and 7hs hsueuxn udneicj
Answer:
the time required for one half of a sample of a radioisotope to decay
Answer:
it is an ideal gas because all of the substances that it has are good for us and won't affect us in any way