1.10 Group 1

• Group 1 elements react by gaining electrons to form negative ions.

  False
• Group 1 elements are all soft, silvery-white metals that are solid
• How many valence electrons do Group 1 elements have?

  One
• Group 1 elements are soft, silvery-white metals that are solid at room temperature.
• What happens to the single valence electron in Group 1 elements during a reaction?

  It is lost
• Group 1 elements react violently with water to produce hydrogen gas and a basic solution.
• What are the melting and boiling points of Group 1 elements compared to other metals?

  Low melting and boiling points
• What is another name for Group 1 elements?

  Alkali metals
• How many valence electrons do Group 1 elements have?

  One
• The high electropositivity of Group 1 elements is due to their single valence electron.
• The reactivity of Group 1 elements increases as you descend the group.
• Match the Group 1 element with its oxide formed in oxygen:

  Lithium ↔️ Lithium oxide

  Sodium ↔️ Sodium peroxide

  Potassium ↔️ Potassium superoxide
• Why are Group 1 elements used as reducing agents?

  They easily donate their valence electron
• Compounds of Group 1 elements produce bright, vivid colors in fireworks.


  True
• What is another name for Group 1 elements?

  Alkali metals
• What is a common property of the melting and boiling points of Group 1 elements compared to other metals?

  Low melting and boiling points
• Group 1 elements form ions with a charge of +2 when they lose their valence electron.

  False
• Why are Group 1 elements highly reactive?

  Single valence electron
• The high electropositivity of Group 1 elements makes them highly reactive.
• What happens to the reactivity of Group 1 elements as you move down the group?

  It increases
• Group 1 elements react violently with water to produce hydrogen gas and a basic solution.


  True
• Group 1 elements readily lose their valence electron to form positive ions.


  True
• Group 1 elements form positive ions with a +1 charge.


  True
• Group 1 elements react violently with water to produce hydrogen gas and a basic solution.


  True
• Group 1 elements are highly electropositive due to their single valence electron.


  True
• The reaction between Group 1 elements and water produces hydrogen gas and a basic solution.
• Lithium and sodium are used in alkali batteries because they easily lose their valence electron.
• What are Group 1 elements used for in metallurgy?

  Reducing agents
• Group 1 elements react with water to produce hydrogen gas and a basic solution.
• Match the Group 1 element with its electronic configuration:

  Lithium (Li) ↔️ 2, 1

  Sodium (Na) ↔️ 2, 8, 1

  Potassium (K) ↔️ 2, 8, 8, 1
• Order the reactivity of Group 1 elements from least to most reactive:

  1️⃣ Lithium (Li)

  2️⃣ Sodium (Na)

  3️⃣ Potassium (K)
• Group 1 elements have higher melting and boiling points compared to other metals.

  False
• Match the reaction of Group 1 elements with its products:

  Reaction with water ↔️ Basic solution and hydrogen gas

  Reaction with oxygen ↔️ Oxides

  Reaction with halogens ↔️ Ionic salts
• The high reactivity of Group 1 elements is due to their single valence electron.
• What are the products of the reaction between Group 1 elements and water?

  Hydrogen gas and basic solution
• What is the equation for the reaction between potassium and water?

  $2K +$$2H_{2}O \rightarrow 2KOH +$$H_{2}$
• Potassium is the most reactive Group 1 element with water.


  True