Weathering is everywhere. An example of physical weathering would be a river flowing on rocks slowly over time the rock will wear down and an example of chemical weathering is acid rain aka the rust on a car.
In setting up your equipment in front of the fume hood to eliminate
any vapors during the experiment. Use an iron ring stand with iron ring to back
up the clay triangle to clasp the crucible and lid. Alter the height of the
iron ring so the end of the crucible is about one centimeter above the inner
blue cone of the strong flame.
Answer:A copper-gold alloy has a crystalline structure
Explanation:
About 122 degrees Fahrenheit