Chapter 2 Vocabulary

matter that always has exactly the same composition; an element or compound

• pure substance
• element
• atom
• compound
• heterogeneous mixture

a substance that cannot be broken down into simpler substances

• element
• pure substance
• atom
• compound
• heterogeneous mixture

the smallest particle of an element

• atom
• pure substance
• element
• compound
• heterogeneous mixture

a substance that is made from two or more simpler substances and can be broken down into those simpler substances

• compound
• pure substance
• element
• atom
• heterogeneous mixture

a type of mixture in which the parts of the mixture are noticeably different from one another

• heterogeneous mixture
• pure substance
• element
• atom
• compound

a type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance from another

• homogeneous mixture
• pure substance
• element
• atom
• compound

a mixture that forms when substances dissolve and from a homogeneous mixture

• solution
• pure substance
• element
• atom
• compound

a heterogeneous mixture that separates into layers over time

• suspension
• pure substance
• element
• atom
• compound

a mixture that contains some particles that are intermediate in size between the small particles in a solution and the larger particles in a suspension

• colloid
• pure substance
• element
• atom
• compound

any characteristic of a material that can be observed or measured without changing the composition of the substances in the material

• physical property
• viscosity
• conductivity
• malleability
• melting point