Aisha drops an antacid tablet in water and times how long it takes to dissolve. Which of the following will decrease the reaction rate?


increasing water temperature

decreasing water temperature

using more water




What is the end result of a nuclear fusion reaction?

two new atoms with smaller nuclei form

molecule of atoms forms

one new atom with a larger nucleus forms

new bonds between atoms are formed




The chemical reaction between iron (Fe) and oxygen (O) results in the loss of electrons from iron. This reaction is an example of _____.

oxidation

respiration

combustion

sublimation