the list below shows three ways in which metals can react.
a) strongly heat the metal in the air.
b)add small pieces of the metal to cold water.
c)add small pieces of the metal to dilute acid.
in each case choose a b or c
calcium oxide
hydrogen (using zinc)
magnesium chloride
sodium hydroxide
urgent
does noone know
To determine how each metal reacts, we will go through each method one by one and indicate the corresponding letter (a, b, or c) for each metal.
a) Strongly heat the metal in the air:
- Calcium oxide: Calcium oxide is formed when calcium is heated strongly in the air. The correct answer for calcium oxide is a.
b) Add small pieces of the metal to cold water:
- Hydrogen (using zinc): When small pieces of zinc metal are added to cold water, they react and produce hydrogen gas. The correct answer for hydrogen (using zinc) is b.
c) Add small pieces of the metal to dilute acid:
- Magnesium chloride: Magnesium chloride does not react with dilute acid. Therefore, the correct answer for magnesium chloride is none of the given options (a, b, or c).
- Sodium hydroxide: Sodium hydroxide does not react with dilute acid. So the correct answer for sodium hydroxide is also none of the given options (a, b, or c).
To summarize:
- Calcium oxide reacts by strongly heating the metal in the air (a).
- Hydrogen (using zinc) is produced by adding small pieces of zinc metal to cold water (b).
- Magnesium chloride does not react with dilute acid (none of the options a, b, or c).
- Sodium hydroxide also does not react with dilute acid (none of the options a, b, or c).