How many oranges are in 1 mole of oranges?

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Based on its chemical properties, identify the position of each chemical family on the periodic table.

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.