Chemical reactions
occur only in living organisms
create and destroy atoms
only occur outside living organisms
produce new substances
2. what does the symbolin a chemical equation mean? heat is supplied to the reaction.
a catalyst is needed.
yields
precipitate
3. a skeleton equation does not show which of the following?
the correct formulas of the reactants and products
the reactants on the left, the products on the right
an arrow connecting the reactants to the products
the relative amounts of reactant

Which organic molecule is found in the chromatin of cells?

Which of the following compounds does not contain molecules? question 2 options: co2 h2 nacl h2o

How do cfcs cause ozone depletion? how do cfcs cause ozone depletion? ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation breaks down cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks two oxygen atoms away from ozone, leaving behind a paired oxygen molecule. ultraviolet radiation creates cfcs, molecules containing chlorine. chlorine then breaks one oxygen atom away from ozone, leaving behind a paired oxygen molecule.