Card Set Information
science chem basics
7th Grade Science quiz
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.
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
Physical Properties of Matter
No chemical change
texture, feel, color
Chemical Properties of Matter
Needs a chemical reaction
Only observed as a new substance
Marshmallow after surgar has been carmalized