Answer:
Explanation:
The relative atomic mass of an element is a weighted average of the masses of the atoms of the isotopes - because if there is much more of one isotope then that will influence the average mass much more than the less abundant isotope will.
Answer:
to go against dangerous viral and bacteria
Explanation:
Answer:
Bacteria
Explanation:
On a piece of raw, fresh hamburger from the butcher's, bacteria are rapidly multiplying through asexual reproduction.
Answer:
on the surface of the cathode
Answer:
Explanation:
Physical change is a temporary and reversible change in which the physical properties of the substance changes without altering the composition of the substance Eg Melting of ice while chemical change is a permanent and not so easily reversible change in which the identity of the substance is altered to produce one or more substances Eg Combustion
