EVALUATION nt,
rom
Classify the
following
materials into
elements,
compounds
and mixtures:
Water, salt, iron
filings, salt
water.
the​

An experimental procedure requires a 10 ml of acid to be dissolved

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.

The biosphere of the earth is made up of what compound? organic or inorganic?