1. ¿Qué diferencia existe entre el concepto que toda la gente maneja el en trabajo y el concepto de trabajo mecánico?

Drive down any three characteristic of modern periodic table

An object displaces 652 ml of water. the volume of the object is: 0.652 cm³ 6.52 cm³ 65.2 cm³ 652 cm³

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?