Amixture is different from a compound because each substance in a mixture
a.
retains its own properties.
c.
forms an ion.
b.
changes its electric charge.
d.
changes from a solid to a liquid.

the word that best describes martin luther king jr.'s tone in the video is dignified

martin luther king, jr. was a social activist and baptist minister who played a key role in the american civil rights movement from the mid-1950s until his assassination in 1968. the video shows his manner and attitude having or showing a composed or serious manner that is worthy of respect so dignified is the correct answer