Identify the Property
The property by which a metal can be beaten into thin sheets is called ________.
Malleability
Which one is a metal: sulfur, coal, copper, wood?
Copper
Metals are generally good conductors of ________.
Heat and electricity
What is the brown deposit formed on iron called?
Rust
Magnesium burns with a ________ white flame.
Dazzling
The property by which metals can be drawn into wires is called ________.
Ductility
Name the metal that is liquid at room temperature.
Mercury
Which type of material is used for the covering of electrical wires to protect us from electric shock?
Insulating/poor-conducting material
What two conditions are essential for rusting of iron?
Air and water/moisture
What is the white powder formed when magnesium burns in air?
Magnesium oxide
Which property of metals is responsible for the ringing sound of a school bell?
Sonority
Which of these is a non-metal: iron, aluminium, sulfur, copper?
Sulfur
Why are cooking vessels generally made of metals?
Because metals are good conductors of heat.
In the rusting experiment, which bottle contained both air and water and showed rust?
Bottle C
Are metal oxides generally acidic or basic?
Basic
Gold and silver are known to be highly ________ metals.
Malleable
Name two metals that are good conductors of electricity.
Copper
Why are handles of cooking vessels often made of wood or other poor conductors?
They reduce the transfer of heat to our hands.
Does iron rust in dry air alone?
No
When sulfur burns in air, which gas is formed?
Sulfur dioxide
A material breaks into pieces instead of becoming a thin sheet when hammered. What property does it show?
Brittleness
Name any two non-metals that are essential in everyday life.
Oxygen and nitrogen
An electrician uses rubber gloves while working. What property of rubber makes the gloves useful?
Rubber is a poor conductor of electricity.
A student keeps an iron nail completely dipped in water and covers the water with oil. Why does the nail not develop rust?
The oil prevents air from dissolving in the water, so the nail does not get both air and water.
Sulfur dioxide dissolves in water to form which acid?
Sulfurous acid