alkali metals and halogens

Alkali metals are found in which group of the periodic table?

• Group 1
• Group 2
• Group 7
• group 8 

Which of the following is the most reactive in water?

• Lithium
• Sodium
• Potassium

What is formed when sodium reacts with water?

• sodium oxide and hydrogen
• sodium hydroxide and hydrogen
• sodium hydroxide and oxygen
• sodium hydroxide and carbon dioxide

What is the symbol equation for the reaction between sodium hydroxide and water?

• 2Na + 2H₂O → 2NaOH + H₂
• Na + H₂O → NaOH + H
• Na + H₂0 → NaCl + CO₂
• 2Na + 2H₂O → 2NaH₂ + O₂

Which of the following statements is true?

• In a chemical reaction atoms are created
• In a chemical reaction atoms are destroyed
• In a chemical reaction the arrangement of the atoms is changed
• In a chemical reaction the arrangement of the atoms remains the same, but the physical state (solid,liquid,gas) changes

Which of the following is NOT an alkali metal

• Li
• Cl
• K
• Cs

What is another name for the elements in group 7?

• The Halogens
• The Noble gases
• The Oxides
• The Alkali Metals

Which is the lightest alkali metal?

• Aluminium
• Hydrogen
• Lithium
• Potassium

When an alkali metal reacts with water, the hydroxide produced dissolves to form and alkaline solution, True or False?

• True
• False

Alkali are so reactive to air they are generally stored in what?

• Water

• Oil

• Vaults

• Cotton

• a vacuum