Brainliesttt !me : )
a hair gel is a mixture. which of the following is true about hair gel?
a chemical change is required to separate its mixed components.
a physical change can separate its mixed components.
it is made up of millions of units of a single type of compound.
it is made up of millions of atoms of a single element.

Significant figures are digits read directly from the measuring instrument plus one more digit, which is __ by the observer.

Is laundry detergent an acid or a base?

The picture represents the process that produces most of the energy used by living organisms on earth. which process is represented in the picture? a) the magnetic attraction between two hydrogen nuclei. b) the fusion of hydrogen nuclei to produce a helium nucleus in the core of the sun. c) the fission of hydrogen nuclei to produce a helium nucleus in the core of the sun. d) the chemical reaction between hydrogen nuclei to produce a helium nucleus in earth's atmosphere.