CHEMISTRY
physical and chemical change
physical change
A physical change is a type of
change that does not make
new substance.
cutting paper
change a solid to a liquid
glass shattering
chemical change
A chemical change is a type of
change that make a new
substance.
burningburning paperpaper
cooking eggs
VIDEO
Subtopic
rust on a metal
Atoms
Bohr diagram
An atom contains electrons that are
the outer shells of an atom and they
are negatively charged. Protons,
protons are in the nucleolus
of an atom and it is positively
charged. Neutrons, neutrons are in
the nucleolus as well but they are not
negatively or positively charged. Valance
Shell, a valance shell is the most outer
side shell in an atom. Valance Electron,
valance electron are electrons that are
on the Valance shell.
Periodic table
what is a periodic table used for?
A periodic table is used to show the elements that are found in the world by certain people
what are the different parts of the periodic table?
1. Alkali metals
2. Alkaline earths
3. Transition metals
4. Post-transition metals
5. Noble gases
6. Semimetals
7. Halogens
8. Lanthanides
9. Actindes
lab safety rules
1.do not run in lab
1. always read lab instructions before starting
3. always wear goggles
4. don't smell, waft instead
5. always put the lid/cover back on
6. tie back long hair
7. don't lean over a flame
8. always ask teacher if you get hurt
10. put creaked/broken glass in the broken gall box
11. point test tube away
12. don't mix random chemicals
13. keep the lab area tidy
14. do not eat or drink any lab material
15. always clean up after yourself
16. wash your hands after a lab
and etc
video
Subtopic
lab equipment
Erlenmeyer flask
evaporating dish
wire mesh with ceramic center
apron
Bunsen burner
watch glass
forceps
ring clamp
crucible
metric ruler
video
beaker tongs
mortar and pestle
graduated cylinder
test tube
beaker
ring stand
scoopula
test tube holder
test tube rack
pipette
thermometer
funnel
stirring rod-glass
clay triangle