Milk can sour, which means the acidity
increases and the
proteins fold. This causes
whey (watery part of
milk) and a thick mass.
What evidence suggests
a chemical change has
taken place?

Diffraction is when light is bent around obstructions. which of the these observation about clouds would indicate diffraction? a) after rain storms, you can sometimes see rainbows. b) clouds are white or gray and cannot be seen through. c) on a cloudy day, the temperature tends to be cooler than a sunny day. d) the edges of dark clouds appear lighter. this

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule

As light moves from one material into the next, which of the following affects how much the light waves will refract, or bend? angle at which the ray strikes the medium color of the material density of the material temperature of the light wave