6 Chemistry 5 - Acids, Bases and Salts Instructional Resources Acids, bases, and salts are three classes of compounds that form ions in water solutions. 1 Chemistry 6 - Solutions Instructional Resources Solutions are homogenous mixtures of two or more substances. 1 Chemistry 7 - Chemical Thermodynamics Instructional Resources Energy is exchanged or transformed in all chemical reactions and physical changes of matter. 2 Chemistry 8 - Reaction Rates Instructional Resources Chemical reaction rates depend on factors that influence the frequency of collision of reactant molecules. 2 Chemistry 9 - Chemical Equilibrium Instructional Resources .
Chemical equilibrium is a dynamic process at the molecular level.
A multicellular organism develops from a single zygote, and its phenotype depends on its genotype, which is established at fertilization. 2 Life Science 4 - Genetics Instructional Resources Genes are a set of instructions, encoded in the DNA sequence of each organism that specify the sequence of amino acids in proteins characteristic of that organism. 2 Life Science 7 - Evolution . The frequency of an allele in a gene pool of a population depends on many factors, and may be stable or unstable over time. Life Science 8 - Evolution Evolution is the result of genetic changes that occur in constantly changing environments.