reaction of metals

• Which metals react quickly with cold water?

  Potassium, sodium, and lithium
• What do potassium, sodium, and lithium produce when they react with cold water?

  A metal hydroxide and hydrogen gas
• Why does potassium ignite instantly when reacting with water?

  It is the most reactive metal
• What color flame does potassium produce when it ignites?

  A lilac flame
• How does sodium behave when it reacts with water?

  It fizzes rapidly and forms a ball
• What happens to lithium as it reacts with water?

  It fizzes steadily and becomes smaller
• What do most metals produce when they react with dilute acids?

  A salt and hydrogen gas
• Which metals can react with dilute acids but not with cold water?

  Magnesium, aluminum, zinc, iron, and lead
• How do iron and lead react with dilute acids?

  They react slowly
• Which metals do not react with dilute acids?

  Copper, silver, gold, and platinum
• What is the reactivity of metals that do not react with dilute acids?

  They are not reactive enough