Which is a characteristic of collids a) are homogeneous mixtures
b) have large dispersed particles
c) will settle out over time
d) are made up of at least two substances

Which statement about sound is not true? a. air particles travel with sound waves. b. sound waves cannot travel through a vacuum. c. sound waves exist even if no one hears them. d. air particles vibrate along the path of a sound wave.

What is the empirical formula for c4h8o2

Avariable that is not being directly tested during an experiment should be