Your friend says," Chemical changes are caused by an input in energy. In physical changes, there is no transfer of energy." Is your friend correct? Why or Why not?

5. how can you decrease the pressure of a gas in a container without changing the volume of the gas?

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

24 points and brainliest to anyone who can answer under 10 minutes with best ! the table below shows the role of different substances during photosynthesis. substance role during photosynthesis glucose stores chemical energy water combines with glucose to form carbon dioxide chlorophyll traps sunlight which of the following statements would correct one of the roles listed in the table? glucose combines with carbon to form water. chlorophyll reacts with light to produce carbon dioxide. water combines with carbon dioxide during photosynthesis. chlorophyll stores chemical energy needed for photosynthesis.