Which of the following are likely to form an ionic bond?
silicon and oxygen
oxygen and oxygen
carbon and hydrogen
magnesium and oxygen

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.

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Drag each label to the correct location on the chart. classify each reaction as endothermic or exothermic.