'rocks and other materials are neither created nor destroyed. however, they change from one form to another.' in your own words, justify this statement with the of a model

How does chemistry affect our world? a. chemicals makes our world more polluted. b. chemicals keeps us healthy. c. chemicals can or hurt our world. d. chemicals make our world safe to live in.

How do you lengthen a pattern piece? (family and consumer science, sewing)

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.