What is a property of a combustion reaction? a. oxygen gas, o2, is a reactant. b. the products are simpler than the reactants. c. the reactants are simpler than the products. d. an uncombined element is on the reactant and product side.

After watching the video "zinc strip in copper nitrate solution", and reading the instructions, click on the link labeled "start" just below the drawing of the pencil tip. follow the direction to complete the 3x3 grid. answer the below questions for the portion of the activity in which sn(s) is placed in agno3(aq)

This classification of drug typically changes the brain's chemistry and reduces its ability to create its own endorphins.

When water dissociates, each water molecule splits into a hydroxide ion and a) h 3 o + b) a hydrogen atom c) a hydrogen ion d) h 2 o e) oh —