When you burned copper, the product copper
oxide appeared on the wire. besides copper, the
other reactant is

If the mass of the products measured 120g what would the mass of the reactants a. 30g b. 60g c. 120g d. 240g

4. a 20-kg child is tossed up into the air by her parent. the child is 2 meters off the ground traveling 5 m/s. circle one: ke / gpe / both show your work for finding the values of each type of energy the object has:

The biosphere of the earth is made up of what compound? organic or inorganic?