Science

• Specific properties that are unique to each type of matter.
• Melting point, density, condutivity

A reaction pulls in or absorbs energy.

Chemical Ice Pack

A chemical reaction that releases or has excess energy.

Burning fuel in a jet plane to push it forward

Chemical bond formed when two atoms share electrons. usually nonmetals

group of atoms joined by covalent bonds

Attraction that holds two atoms together by sharing electrons.

Stuff that makes up everything. Has mass and volume and density.

D=m/v

Random arrangement of atoms moving very fast

atoms that are not in rigid order but move slower than gas

atom arranged in order, very slowly moving

Liquid to Solid

Solid to Liquid

Liquid to gas

Gas to Liquid

Solid to gas skipping the liquid form

No chemical change

texture, feel, color

White marshmallow

• Needs a chemical reaction
• Only observed as a new substance

Marshmallow after surgar has been carmalized