Crumpling and tearing cause physical changes to a piece of paper. Which two characteristics of the paper change?
A. Size
B. Reactivity
I C. Identity
I D. Shape

Please help I’ll give brainlist and no spamming or links just please help

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

What is the solubility-product constant of barium sulfate, baso4, if a saturated solution is 1.03 ´ 10-5 m?