periodic table
what is the symbol for oxygen?
O
what type of bond shares electrons?
covenant
what law says matter cannot be created or destroyed?
law of conversation of mass
what happens to volume when temperature increases?
it increases
what is the smallest unit of matter?
atom
what element has atomic number 1?
hydrogen
what type of bonds transfer electrons?
ionic
what do you have to do first in any stoichometry problem?
balance the equation
what gas law relates pressure and volume?
what particle has a negative charge?
electron
what group are the most reactive metals in?
group 1 the Alkali metals
what do we call electrons in the outer shell?
valance electrons
what unit is used to measure the amount of substance?
what unit is commonly used for pressure?
atm
what is the center of an atom called?
what is the atomic number of Carbon
6
When share more than one pair of electrons
double
what ratio do you use in stoichiometry problems?
mole ratio
what happens to pressure when volume decreases?
pressure increases
what determines the identity of an element?
Number of protons
what element is in period 3,group 17?
Chlorine
why are covalent bonds usually weaker than ionic bonds?
they share electrons instead of fully transferring them
what is the limiting reactant?
The react that runs out first
what is the formula for gas laws?
PV=nRT
what happens during chemical reaction?
substance changes into new substance