Evidence of a chemical change does not include a) producing a gas. b) change in color. c) change in shape. d) change in temperature.

How many grams of aluminum will there be in 98g of al2o3?

How can carbon move from "land" to bodies of water? describe the way human impact has lead to increased levels of co2 in the atmosphere.

How can a give a full method for the experiment of separating sand from water by filtration? 1-materials 2-steps 3-conclusion also for water and salt separated by the evaporation or distillation process