Which of the following examples shows that a chemical reaction has occurred? a teeth chop up an apple slice into smaller pieces. b sugar placed in sugar water sinks to the bottom. c a glass jar shatters into many pieces when dropped. d bleach gets rid of a ketchup stain on a white shirt.

3.) for each of the following compounds, draw the major organic product of reaction with hcl or naoh and circle whether the starting materials and products will be more soluble in organic solvent or water benzoic acid + hcl: benzoic acid + naoh: oh benzoic acid water/organic water organic fluorenone hс: fluorenone + naoh: fluorenone water/organic water/organic веnzocaine + hci: benzocaine + n»oh: h2n benzocaine water/organic water organic o=

Which aqueous solution of ki freezes at the lowest temperature? 1) 1 mol of ki in 500. g of water 2) 2 mol of ki in 500. g of water 3) 1 mol of ki in 1000. g of water 4) 2 mol of ki in 1000. g of water

Which of the following is not an assumption that scientists must make about the natural world? a. regularity b. causality c. predictability d. plausibility