1. Is electrolysis a chemical or physical change? 2. Do the number of carbon atoms go up, down or remain the same in photosynthesis?
3. Does mass change in a physical or chemical reaction?
4. Understand how to balance the equation for cellular respiration.

Why do leaves change color in the fall? green pigments break down and no longer mask the color of chlorophyll. chlorophyll breaks down and no longer masks the colors of other pigments. red- and yellow-colored pigments grow and mask green-colored chlorophyll. green-colored chlorophyll breaks down and turns red and yellow.

Im inn a ! what"s the answer which of the following is one way creativity can scientists? by ensuring they follow the scientific method by increasing the amount of time it takes to complete scientific experiments by making sure they only try things that have already been proven by leading them to ask more questions about the natural world

What gases are carried by the blood