Anything that has a mass and takes up space, no matter how small

(a)  

The study of the properties, composition and structure of matter

(a)  

When one or more atoms of the same element are bonded together

(a)  

A species of atom with unique properties and characteristics due to the number of protons it has

(a)  

When one or more atoms of different elements are bonded together

(a)  

a characteristic or behavior of a substance that may be observed when it undergoes a chemical change or reaction (ex. combustibility)

(a)  

A mixture where the atoms of objects are unevenly distributed (ex. cereal floating in milk)

(a)  

A usually reversible change in the physical properties of a substance, as size, volume or shape

(a)  

A mixture where the atoms of objects are uniformly distributed (ex. milk)

(a)  

a change of materials into another, new materials with different properties and one or more than one new substances are formed.

(a)  

a property (as color, hardness, boiling point) of matter not involving in its manifestation a chemical change

(a)