Quiz on Alkali Metals

Which group in the periodic table do alkali metals belong to?

• Group 3

• Group 4

• Group 1

• Group 2

What happens when lithium is placed in water?

• It sparks and releases a lilac flame

• It fizzes gradually until it disappears

• It fizzes rapidly and quickly disappears

• It floats on water

How do alkali metals react with oxygen?

• Form metal oxides

• Form metal sulfides

• Form metal carbonates

• Form metal halides

What happens to the reactivity with oxygen as you go down group 1?

• Increases

• Decreases

• Remains constant

• No effect

How do alkali metals form positive ions?

• By sharing electrons

• By losing two electrons

• By gaining one electron

• By losing one electron

What is the common property of alkali metals in terms of density?

• They have low density

• They have high density

• They have medium density

• They have variable density

What is the word equation for the reaction of potassium with oxygen?

• potassium + oxygen --> potassium oxide

• potassium + oxygen --> potassium sulfate

• potassium + oxygen --> potassium chloride

• potassium + oxygen --> potassium hydroxide

What is the common property of alkali metals in terms of melting point?

• They have low melting point

• They have high melting point

• They have medium melting point

• They have variable melting point

Which alkali metal is the least reactive?

• Lithium

• Sodium

• Potassium

• Francium

write the chemical equation for reaction sodium with chlorine .

• 2Na + Cl2 -> 2NaCl
• Na + Cl -> NaCl
• 2Na + 2Cl -> 2NaCl
• 2Na + Cl -> NaCl