Consult a handbook to answer the following questions

Which of the following is a testable hypothesis? a. if i brush my teeth, i will get fewer cavities than if i don't brush my teeth. b. green toothpaste tastes better than blue toothpaste or red toothpaste. c. smart, careful, healthy people always brush their teeth. d. it's wrong to not brush your teeth before you have an important conversation with someone.

Temperature and kinetic energy are proportional. a) adirectly b) directly c) indirectly

Which element has the lowest electronegativity? calcium(ca) gallium(ga) selenium(se) bromine(br)