Tell thechildren that when they wash their hands at a sink theywill need to turn off the water faucet without havingdirect contact with the handle. T o do this they will use aclean, dry paper towel to cover the handle beforetouching it (this prevents the transfer of germs from thehandle back to the hands). 4 Before starting the next activity, get cooking oil(enough for each child to have a dime-sizedamount), and a shakable container of cinnamon spice.
A: Copper is classified as a metal on the periodic table and is therefore not classified according to family in the manner that plants and animals are. Copper is red-colored. It is malleable, ductile, and a good conductor of heat and electricity.
COPPER 108 4. CHEMICAL AND PHYSICAL INFORMATION Cu(II) or the cupric ion is the most important oxidation state of copper. Cu(II) is the oxidation state of copper generally encountered in water (Cotton and Wilkinson 1980).OPPER 105 4. CHEMICAL AND PHYSICAL INFORMATION 4.1 CHEMICAL IDENTITY 4.2 PHYSICAL AND CHEMICAL PROPERTIES Copper is positioned below hydrogen in the electromotive-force series, so it will not displace hydrogen ions from dilute acid.