3. What causes the colors observed during flame tests? (1 point) Protons are changing energy levels.
Electrons are changing energy levels.
New chemical bonds are forming.
Existing chemical bonds are breaking.

The pressure in a fluid is affected by which characteristics of that fluid

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

The following reaction shows the products when sulfuric acid and aluminum hydroxide react. al(oh)3 + h2so4 → al2(so4)3 + h2o the table shows the calculated amounts of reactants and products when the reaction was conducted in a laboratory. sulfuric acid aluminum hydroxide initial amount of reactant 40 g 15 g theoretical yield of water from reactant 14.69 g 10.38 g what is the approximate amount of the leftover reactant? 11.73 g of sulfuric acid 10.33 g of sulfuric acid 11.12 g of aluminum hydroxide 13.67 g of aluminum hydroxide