Here are some common questions about metals in chemistry: 1. What are the general properties of metals? Metals are typically shiny, malleable (can be hammered into thin sheets), ductile (can be drawn into wires), and are good conductors of heat and electricity. They tend to lose electrons to form positive ions. 2. How do metals react with acids? Most metals react with acids to produce a salt and hydrogen gas. For example, zinc reacts with hydrochloric acid: Zn(s) + 2HCl(aq) → ZnCl₂(aq) + H₂(g). 3. How do metals react with oxygen? Metals react with oxygen to form metal oxides. The reactivity varies; some react vigorously (like sodium), while others react slowly or not at all under normal conditions (like gold). Many metal oxides are basic. For example, magnesium burns in air to form magnesium oxide: 2Mg(s) + O₂(g) → 2MgO(s). 4. How do metals react with water? Some reactive metals react with water to form a metal hydroxide and hydrogen gas. For example, sodium reacts explosively with water: 2Na(s) + 2H₂O(l) → 2NaOH(aq) + H₂(g). Less reactive metals like magnesium react with steam. 5. What is the reactivity series of metals? The reactivity series is an ordered list of metals from most reactive to least reactive. It helps predict whether a metal will displace another metal from its salt solution. A common series (most to least reactive) is: Potassium, Sodium, Calcium, Magnesium, Aluminum, Zinc, Iron, Lead, Hydrogen, Copper, Silver, Gold.