Chemical Reactions Part 1

the tiny pieces that all matter—all the stuff in the world—is made of

• atoms

• model

• extended structure

• property

the temperature at which a substance changes from the liquid phase to the gas phase

• boiling point

• melting point

• molecule

• property

letters and numbers showing the types and number of atoms that repeat to make up a substance

• extended structure:

• melting point

• chemical formula

• property

a structure formed by repeating groups of atoms or molecules linked together in a large network

• molecule

• atom

• chemical formula

• extended structure

the temperature at which a substance changes from the solid phase to the liquid phase

• boiling point

• melting point

• chemical formula

• extended structure

an object, diagram, or computer program that helps us understand something by making it simpler or easier to see

• model

• substance

• chemical formula

• extended structure

a group of atoms joined together in a particular way

• model

• atom

• chemical formula

• molecule

something that can be observed about a substance, such as color, smell, or boiling point

• model

• property

• chemical formula

• molecule

something that is made of all the same atoms or groups of atoms

• substance

• property

• chemical formula

• molecule

a substance that is added to soil to help plants grow

• substance

• property

• fertilizer

• molecule