1
Tells the number of protons in an atom.
Atomic Number
the THREE States of Matter we have studied
solid
liquid
gas
breaking a pencil in half is this type of change
(physical or chemical)
physical
a measurement of how closely packed a substance's molecules are
density
the process of a liquid changing into a gas
evaporation
The name of the table of elements
the periodic table
Matter changes from one state to another with the addition or removal of __________
Heat
baking a cake is this type of change
(physical or chemical)
chemical
the substance that dissolves in a solution: ________
Example: sugar
solute
the process of a gas changing into a liquid
condensation
nucleus
this state of matter has the tightest molecular structure
solid
1. if a substance dissolves in water that substance is _______
2. if a substance does not dissolve in water that substance is ___________
1. soluble
2. insoluble
a measurement of how easily a liquid flows
viscosity
What type of charge do each of the following have?
1. proton
2. neutron
3. electron
1. positive
2. neutral
3. negative
All atoms are made up of these THREE particles
protons
neutrons
electrons
this state of matter has the loosest molecular structure
gas
1. objects that float in water are (more or less) dense than water
2. objects that sink in water are (more or less) dense than water
1. less dense than water
2. more dense than water
Which has a greater viscosity: slime or orange juice?
slime
Give the name and letter(s) for one element on the periodic table.
Answers vary.
this part of the atom orbits around the nucleus of the atom
electron (electron cloud)
the "Molecular Melody" is based off this Disney song.
Let it Go
1. An object that allows the flow of energy to flow through are ___________
2. Objects that do not allow energy to flow through are ___________
1. conductors
2. insulators
the substance into which the solute dissolves in a solution
Example: water
solvent
a solid that separates out of a solution due to chemical change
precipitate