Material Science

The spot where two crystal faces meet is the

• grain boundary

• line dislocation

• stress fracture

• allotrope

The ability of a material to change shape without breaking is referred to as

• allotrope

• annealing

• workability

• crystal structure

Work hardening a metal

• decreases crystal defects

• can make a metal brittle

• increases workability

• allow for movement of line defects

A material that cools slowly would have

• small crystals

• large crystals

• many grain boundaries

• poor workability

Atoms of an element bonded together in different structures are called

• ceramics

• allotropes

• metals

• point defects

Which material is made by joining many smaller units together?

• composite

• metal

• polymer

• ceramic

Annealing of metal is useful because it

• increases workability

• decreases workability

• increases brittleness

• allows a solid state phase change to occur

Tags

NGSS.HS-PS3-4

Which material is workable and a good conductor of heat?

• metal

• ceramic

• polymer

• composite

Tags

NGSS.HS-PS3-4

Which material is made of a matrix and reinforcer that together have better properties than the individual materials?

• metal

• ceramic

• polymer

• composite

When a solid material moves from one allotrope to another this is a

• grain boundary

• solid state phase change

• line defect

• point defect