In one to two sentences, give a reason that chemists would use ribbon diagrams. What type of information do they provide?

In this synthesis reaction what products will form

Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.

What is dhmo? hint: you find it everywhere something is wet..