Chemistry Test Review 2017

a change that alters the form of the substance without changing it into another substance

• physical change
• chemical change
• thermal change

the result of a chemical change

• change in state
• different substances with different properties
• no new substances

a substance that cannot be broken down into any other substances by either physical or chemical means

• element
• atom
• molecule

all elements are composed of these extremely small particles

• compounds
• atoms
• molecules

a group of atoms that are joined together and act as a single unit

• element
• compund
• molecule

pure substances formed from chemical combinations of two or more different elements

• elements
• compounds
• molecules

has a definite shape and a definite volume

• solid
• liquid
• gas

particles are free to move throughout the container but remain in close contact

• solid
• liquid
• gas

has a definite shape but not a definite volume

• solid
• liquid
• gas

particles spread apart and fill the space available to them

• solid
• liquid
• gas