For each of the following, predict the complete, balanced chemical equation for the reaction that occurs when they are mixed. Make sure to label the states. 1. HNO3 & NaOH 2. Sr(OH)2 & HI

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.

If two objects at different te,peraure are in contact with each other what happens to their temperature

Fossil fuels are organic compounds that are made from