Question

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

Answer 1

A -decreasing water temperature

Answer 2

1. Decreasing the temperature of the water.
2. One new atom with a large nucleus forms.
3.The reaction is an example of oxidation.