While on vacation, Mr Brown rides a hot air balloon. To make the balloon rise, the pilot turns on a flame to warm the air inside the balloon. Which of these best describe the change in energy that makes the balloon rise

Which is true of a liquid? it has a definite volume but not a definite mass.it has a definite mass but not a definite volume.it has a definite volume but not a definite shape.it has a definite shape but not a definite volume.

Which of the following units is not an official si unit

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules