The opposition that a body offers to scratches or perforation:

• Elasticity

• Fragility

• Hardness

The materials that are obtained through chemical reactions that create totally diferent products that are not found in nature:

• Synthetic materials

• Non-renowable materials

• Raw materials

There is a lamp hanging from the ceiling . What kind of effort the chain that supports it be sujected to?

• Traction

• Compression

• Flexion

If a materials deforms when a force is applied on t but later recovers its initial shape, it is:

• Fragile

• Elastic

• Ductile

Indicate which of the followings pictures is not a type of effort:

• 
• 
• 
• 

Indica which is not a technological property:

• Ductility

• Malleability

• Plasticity

• Weldability

If a metal is hit firmly but it doesn´t deform, it has:

• Low hardness

• High fragility

• High toughness

Indicate which aren´t a physical properties:

• Density

• Resistance to shear

• Transparency

• Plasticity

A mixture of two or more metals and a non-metal in a molten state that, once solidified at room temperature, mantains its metallic properties:

• Alloy

• Ferrous Metal

• Cast Iron

A material that maintains its shape when deformed, has:

• Elasticiy

• Fragility

• Plasticity

• Ductility