Period 3 A Level

Write the balanced equation for sodium reacting with water including state symbols

• 2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)

• 2Na(s) + H2O(l) -> 2NaOH(aq) + H2(g)
• 2Na(s) + 2H2O(l) -> 2NaOH(aq) + H2(g)
• Na(s) + H2O(l) -> NaOH(aq) + H2(g)

Which product determines the pH of the solution formed when sodium reacts with water.

• NaOH(aq)
• Na

• OH

• H2

What pH is the solution formed after sodium reacts with water?

• 7
• 12
• 14
• 10

Why does sodium melt into a ball when it reacts with water

• Sodium reacts with water to form a ball
• The water cools down the sodium, causing it to solidify into a ball
• The heat generated from the reaction with water melts the sodium into a ball.
• The reaction is highly exothermic

Describe and explain the difference in reactivity between sodium and magnesium

• The metallic bonding is stronger in magnesium causing the activation energy to be high

• Sodium is more reactive than magnesium due to the ease of losing electrons.
• The reactivity of sodium and magnesium is the same because they are both metals.
• Sodium is less reactive than magnesium because it has a higher ionization energy.

Why is the reaction of magnesium with water much slower than sodium

Write a balanced equation for magensium reacting with steam, including state symbols

Write a balanced equation for sodium reacting with oxygen, including state symbols

Write a balanced equation for magnesium reacting with oxygen, including state symbols

Write a balanced equation for aluminium reacting with oxygen, including state symbols