What is the smallest unit of a compound that still has all the properties of that compound?

Will give brainliest! jay rides his 2.0-kg skateboard. he is moving at speed 5.8 m/s when he pushes off the board and continues to move forward in the air at 5.4 m/s. the board now goes forward at 13 m/s. a. determine jay’s mass. b. determine the change in the internal energy of the system during this process.(express your answer to two significant figures and include the appropriate units.)

Which planet do you think would be easiest for humans to colonize some day?

What structural formula represents 4 electrons shared between two atoms?