Which element is most chemically similar to chlorine?
(1) ar (3) fr
(2) f (4) s

10. according to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants?

When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?

Write and balance the chemical equation that represents the reaction of aqueous sulfuric acid with aqueous sodium hydroxide to form water and sodium sulfate. include phases.