What are the 4 indicators of a chemical change? (Select 4of them)1. Color change 2.Precipitate 3. Physical change 4.Temperature change 5.Gas Produce 6. No gas is produced

How would you reduce the volume of gas

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both