WorksheetsReactivity of Metals Quiz
Total questions: 23
Worksheet time: 12mins
Which group of metals is known as the alkali metals?
Group 3
Group 2
Group 4
Group 1
What is the purpose of storing alkali metals in oil?
To prevent them from melting
To protect them from reacting with oxygen or moisture
To make them more reactive
To keep them shiny
What is the product formed when lithium reacts with water?
Lithium carbonate
Lithium chloride
Lithium oxide
Lithium hydroxide
What color does the universal indicator turn when lithium reacts with water?
Red
Green
Yellow
Purple
Which alkali metal reacts the fastest with water?
Lithium
Sodium
Potassium
Calcium
What is the gas produced when alkali metals react with water?
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
What is the main observation when sodium reacts with water?
It remains unchanged
It changes color
It melts into a ball and moves quickly
It sinks to the bottom
What is the flame color observed when potassium reacts with water?
Green
Blue
Red
Lilac
What type of reaction occurs when metals react with hydrochloric acid?
Decomposition
Endothermic
Exothermic
Neutralization
What is the purpose of using an insulated cup in the metal and acid reaction?
To prevent the reaction
To reduce heat loss
To increase the reaction rate
To change the color of the solution
Which metal did not react with hydrochloric acid in the experiment?
Copper
Zinc
Iron
Magnesium
What is the gas produced when metals react with hydrochloric acid?
Carbon dioxide
Nitrogen
Oxygen
Hydrogen
What is the purpose of using a lit splint in the gas test?
To test for hydrogen gas
To test for oxygen gas
To test for carbon dioxide gas
To measure temperature
What is the main observation when zinc reacts with hydrochloric acid?
No reaction
Temperature decrease
Temperature increase
Color change
What is the chloride salt formed when magnesium reacts with hydrochloric acid?
Magnesium oxide
Magnesium nitrate
Magnesium chloride
Magnesium sulfate
What is the purpose of rinsing the cup between metal reactions?
To prevent color change
To cool it down
To keep the test fair
To change the reaction rate
What is the main observation when potassium reacts with water?
It sinks to the bottom
It remains unchanged
It changes color
It catches fire with a lilac flame
What is the purpose of using safety screens during the alkali metal reactions?
To increase reaction speed
To protect from hazardous reactions
To prevent color change
To enhance visibility
What is the main observation when lithium reacts with water?
It remains unchanged
It changes color
It floats and fizzes
It sinks to the bottom
What is the pattern observed in the reactivity of group 1 alkali metals?
Reactivity is random
Reactivity increases down the group
Reactivity decreases down the group
Reactivity remains constant
Which alkali metal is the least reactive?
Li
Na
H
Fr
Which of the followings is the most reactive alkali metal in water?
Lithium
Sodium
Potassium
Hydrogen
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
