# 3.3 - Matter

The student will investigate and understand that objects are made of materials that can be described by their physical properties. Key concepts include

a)  objects are made of one or more materials;

• infer that objects are made of one or more materials based on observations of the physical properties that are common to each individual object. Bloom's Level: Understand

b)  physical properties remain the same as the material is changed in visible size; and

• compare the physical properties of smaller, visible pieces of a material to those physical properties of the entire material.  Bloom's Level: Analyze
• design an investigation to determine if the physical properties of a material will remain the same if the material is reduced in size.  Bloom's Level: Create

c)  visible physical changes are identified.

• explain that physical properties are observable characteristics that enable one to differentiate objects.  Bloom's Level:  Understand
• conclude that materials have their own set of physical properties that are observable.  Bloom's Level: Analyze

### BIG IDEAS

Matter takes up space and has properties.

### UNDERSTANDING THE STANDARD

• Objects are made of one or more materials (e.g., toys, shoes, and furniture).
• Physical properties (e.g., color, texture, phase, temperature, ability to dissolve in water) remain the same even if the visible material (e.g., plastic, paper, metal, ice) is reduced in size.
• Nanotechnology is the study of materials at the molecular (atomic) scale. Items at this scale are so small they are no longer visible with the naked eye. Nanotechnology has shown that the behavior and properties of some substances at the nanoscale (a nanometer is one-billionth of a meter) contradict how they behave and what their properties are at the visible scale.

### ESSENTIALS

Essential Questions:

·  What is matter?

·  How can matter be classified?

·  How do properties of matter change?

In order to meet this standard, it is expected that students will

• explain that physical properties are observable characteristics that enable one to differentiate objects.
• infer that objects are made of one or more materials based on observations of the physical properties that are common to each individual object.
• compare the physical properties of smaller, visible pieces of a material to those physical properties of the entire material.
• conclude that materials have their own set of physical properties that are observable.
• design an investigation to determine if the physical properties of a material will remain the same if the material is reduced in size.

### KEY VOCABULARY

characteristics

classify

conclude

design

infer

magnification

material

matter

object

observe

physical properties

reduce

size

Updated: May 20, 2016