Quick Answer: What Makes Something Soft Or Hard?

What is the smoothest object in the world?

A team of physicists from the Autonomous University of Madrid (UAM) and the Madrid Institute of Advanced Studies in Nanoscience (IMDEA-Nanociencia) has created the “quantum stabilized atom mirror,” the smoothest surface ever, according to a recent article in Advanced Materials..

What things feel rough?

Texture is the physical feel of something — smooth, rough, fuzzy, slimy, and lots of textures something in between. Sandpaper is very rough — it has a gritty, rough texture. Other things, like linoleum, have a smooth texture. Texture has to do with how an object feels and it’s ingredients.

What is soft and hard material?

Materials that can be compressed are known as soft materials. Examples are cotton, rubber, and sponge. Materials that cannot be compressed are known as hard materials. Examples are steel, rock, and iron.

What makes a material soft?

Something that’s “soft” has a low resistance to permanent deformation (i.e., you can scratch it easily). Compliant is the opposite of stiff, and soft is the opposite of hard.

Why are some materials hard and others soft?

Those materials which cannot be easily compressed, cut, bent or scratched are called hard materials. Examples: Iron, glass. Those materials which can be easily compressed, cut, bent or scratched are called soft materials.

What objects are smooth?

Here’s our list of things that are smooth:Mirror.Ice.Metal.Glass.Marble.Tapioca Pearls.Bowling Ball.Satin.More items…•

What is rough example?

The definition of rough is coarse or uneven, or tough or difficult. An example of rough is the feeling of a bumpy road. An example of rough is going through depression. adjective.

Can a softer material scratch a harder one?

So yes – if your definition of cutting is broad enough to include “able to remove material”, then a soft material can cut a harder one.

What are soft materials give example?

Examples include colloids, polymers, liquid crystals, gels, emulsions, foams and the tissue that makes up most of the animal world.

Why do things feel soft?

Something that is soft is something that can be deformed easily. Soft materials offer less amount of stress (or opposing force per unit area) in order to undergo amount of strain (or deformation). … But these chains can very easily slide over each other making polymers very easy to deform and thus they feel softer.

Why some materials are harder than others?

Metals alloys like steel are much harder than elemental metals because they are a mixture of different elements like iron, nickel, chrome, etc. Basically, when a metal is composed uniformly of the same atom, they fit together very tightly and slide over each other easily. This is why pure gold is so soft and malleable.

What makes a material harder than other?

The stability and energy of the bond between the electron shells of atoms makes for materials properties such as hardness. … The stability and energy of the bond between the electron shells of atoms makes for materials properties such as hardness. One of the hardest materials is diamond, which is composed of carbon.