<span>Which of the following substance are not formed by chemical bonds? </span>A MIXTURE
You look up the element in the periodic table. Subtract the atomic number (small number) from the mass number (big number). The answer is the number of neutrons.
Answer:
lipids are insoluble in water which is why lipids are often found in biological membranes and other waterproof coverings.
Answer:
bro what.
Explanation:
... is this an actual physics question?