Materials. Where do they come from?

The matter of which objects are composed:

• volume

• material

Materials can be:

• natural and artificial

• homogeneous and heterogeneous

Natural materials come from:

• non-living things

• living things

Natural materials: animal, plant and _____.

• herbaceous origin

• mineral origin

Leather, silk and wool are:

• animal origin

• plant origin

• mineral origin

Wood, cork and cotton are:

• animal origin

• plant origin

• mineral origin

Iron, marble and clay are:

• plant origin

• animal origin

• mineral origin

Artificial materials are created by transforming _____ materials.

• homegeneous

• natural

Plastic bottles, plastic bags, papers are examples of:

• artificial materials

• natural materials

Characteristics of an object:

• artificial materials

• pure substance

• mixtures

• properties of materials