Year 8 - The Alkali Metals

What is the chemical symbol for sodium?

• Na

• NA

• K

• Li

What is the chemical symbol for potassium?

• Ka

• K

• Na

• Li

What is the chemical symbol for lithium?

• li

• LI

• lI

• Li

Which element from group 1 is the most reactive?

• Na

• K

• Li

• P

Lithium reacts with water to produce?

• Oxygen and water

• Lithium oxide and carbon dioxide

• Lithium hydroxide and hydrogen

• Lithium hydrogen and hydroxide

Which answer shows a correct word equation?

•   $Potassium\ +Water\ \rightarrow\ Potassium\ Hydroxide\ +Hydrogen$  

•  $Lithium\ +Water\ \rightarrow\ Lithium\ Hydroxide\ +Oxygen$  

•  $Sodium\ +Oxygen\ \rightarrow\ Sodium\ Hydroxide+Water$  

•  $Rubidium\ +Lithium\ \rightarrow\ Rubidium\ Lithide\ +\ Hydrogen$  

Which alkali metal is the least reactive?

• Cu

• Na

• K

• Li

Which answer shows a common property of metals?

• Ductile

• Low melting point

• Liquid at room temperature

• Dull

Metals can be pressed, hammered or rolled into sheets. Which word best describes this property?

• Malleable

• Stretchy

• Squishy

• Flexible

Which answer best describes the reaction between alkali metals and water?

• The metal sinks and breaks up

• The metal floats, fizzes and may produce a flame

• The metal will explode

• The metal does not react with water