Double Displacement Reactions You are to create the product with ion charges attached as subscripts. Be sure to indicate if the compound is aqueous (aq), solid (s), liquid (l), or gas (g).
NaOH (aq) + CaBr2(aq) →
Pb(NO3)2 (aq) + HCl (g) →
Na2CO3(aq) + KF(aq) →
AgNO3(aq) + CuSO4(aq) →
AgF (aq) + NiCl2 (aq) →

Which is an example of gaining a static charge by conduction? a) rubbing a balloon against your hair. b) shuffling your shoes across a carpet. c) bringing a charged rod near an electroscope. d) touching your car on a cold day and getting a shock.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.

What are similarities and differences of reflection, refraction, diffraction and absorption?