It is the ability of the objects to resist scratching, breaking or deformation

• BRITTLENESS

• HARDNESS

• MALLEABILITY

• DUCTILITY

Different objects have different levels of hardness.

• TRUE

• FALSE

• MAYBE

• NONE OF THE ABOVE

Hardness can be tested by ________ two objects against each other.

• SHAKING

• PULLING

• SCRATCHING

• NONE OF THE ABOVE

It is the hardest known mineral.

• CORUNDUM

• QUARTZ

• TOPAZ

• DIAMOND

Which object will the nail leave a scratch?

• GLASS

• METAL RULER

• CANDLE

• CONCRETE

Which object will the nail does not leave a scratch?

• ERASER

• METAL RULER

• PAPER

• SOAP

What happen to the stronger object when we scratch it with the other object?

• stronger object will not have any scratch

• stronger object will have any scratch

• stronger object will be cut into pieces

• none of the above

Which object will have scratches when we do the hardness test?

• stronger object

• bigger object

• weaker object

• smaller object

During the experiment, what characteristic is present in the objects with scratches?

• Objects are soft and smooth.

• Objects are hard and rough.

• Objects are stronger.

• Objects are easy to break.

During the experiment, what characteristic is present in the objects without scratches?

• Objects are soft and smooth.

• Objects are hard and rough.

• Objects are stronger.

• Objects are easy to break.