reactions
a decomposition reaction
what is AB->A+B?
a bond where the atoms combine together
what is a covalent bond?
matter cannot be created or destroyed
what is the law of conservation of mass
the subscript goes in the bottom right of a number
where does a subscript go
Hydrogen
what is H
A+B->AB
what is an example of a composition reaction?
when an atom attracts to another because of it's charge and bonds
what is an ionic bond
neutron
what's the center of an atom
can you subscripts or coefficients when balencing a chemical equation
the atomic number
what is in the top left of an element
A+BC-> B+AC
what is one example of a single replacement reaction?
the weakest bond
what is a hydrogen bond?
positive
what charge are protons
element, subscript, coefficient
atomic mass
the number below an element
a double replacement reaction
what is AB+CD-> AD+CB?
the strongest bond
what are triple bonds?
negative
what charge does an electron have
a subscript applies to all.
what do parenthesis do?
magnesium
what is mg
a combustion reaction
what reaction creates light and heat?
when positive ions and negative ions switch places creating new compounds
double replacement reaction
sodium
what explodes in water?
3HMg
how many hydrogens are there?
valence electrons
what are the electrons on the outer shell