names of elements
density
molecules
metals
names of compounds
100

H

hydrogen

100

p = m/v

formula for density

100

molecule

combined atoms

100

gold

Au

100

CO

carbon monoxide

200

Al

aluminum

200

how to tectonic plates move on top of each other

the denser plates side under, while the lighter plates move above

200

why can't atoms with eight electrons join with other atoms

because of the octet rule

200

Co

cobalt

200

CO2

carbon dioxide

300

fluorine

F

300

how light does something need to be ignorer to float on water

less than 1 gram per cubic centimeter

300

H2O

water

300

Fe

iron

300

nitrogen dioxide

NO2

400

silver

Ag

400

how fast are a hurricanes winds

72MPH or more

400

iron oxide

Fe2O2

400

Pt

platinum

400

sulfor trioxide

SO3

500

Se

selenium

500

how does an object become denser

if the atoms are closer together
500

aluminum oxide

Al2O3

500

electrum

an alloy of gold a silver

500

BaCL2

barium chloride