When aluminum is combined with oxygen, aluminum oxide is formed. the rearrangement of the atoms involved is an example of what? a. physical change b. chemical change c. chemical property d. intensive physical property

Solar energy is energy from the sun that is converted into thermal or energy. a. nuclear b. mechanical c. electrical d. chemical

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6

Is a pencil falling to the floor anon contact force, a force, or a contact force