This resource has 32 correlations with the National Standards.  
[HIDE CORRELATIONS]

• Physical Science
  • Properties of objects and materials
    • Objects have many observable properties, including the ability to react with other substances. (K-4)
  • Properties and changes of properties in matter
    • Substances react chemically in characteristic ways with other substances to form new substances (compounds) with different characteristic properties. (5-8)
    • In chemical reactions, the total mass is conserved. (5-8)
  • Structure and properties of matter
    • A compound is formed when two or more kinds of atoms bind together chemically. (9-12)
    • Carbon atoms can bond to one another in chains, rings, and branching networks to form a variety of structures, including synthetic polymers, oils, and the large molecules essential to life. (9-12)
  • Chemical Reactions
    • Chemical reactions occur all around us, for example in health care, cooking, cosmetics, and automobiles. (9-12)
    • Complex chemical reactions involving carbon-based molecules take place constantly in every cell in our bodies. (9-12)
    • Chemical reactions may release or consume energy. (9-12)
    • Light can initiate many chemical reactions such as photosynthesis and the evolution of urban smog. (9-12)
    • A large number of important reactions involve the transfer of electrons (oxidation/reduction reactions). (9-12)
    • A large number of important reactions involve the transfer of hydrogen ions (acid/base reactions) between reacting ions, molecules, or atoms. (9-12)
    • In some reactions, chemical bonds are broken by heat or light to form very reactive radicals with electrons ready to form new bonds. (9-12)
    • Reaction rates depend on how often the reacting atoms and molecules encounter one another, on the temperature, and on the properties--including shape--of the reacting species. (9-12)
    • Chemical reactions in living systems are catalyzed by protein molecules called enzymes. (9-12)

• Life Science
  • Organisms and environments
    • All animals depend on plants. Some animals eat plants for food. Other animals eat animals that eat the plants.
  • Structure and function in living systems
    • This requires that cells take in nutrients, which they use to provide energy for the work that cells do and to make the materials that a cell or an organism needs. (5-8)
  • The cell
    • The process of photosynthesis provides a vital connection between the sun and the energy needs of living systems. (9-12)
    • Most cell functions involve chemical reactions. (9-12)
    • Food molecules taken into cells react to provide the chemical constituents needed to synthesize other molecules. (9-12)
    • Both breakdown and synthesis are made possible by a large set of protein catalysts, called enzymes. (9-12)
    • The breakdown of some of the food molecules enables the cell to store energy in specific chemicals that are used to carry out the many functions of the cell. (9-12)
    • Plant cells contain chloroplasts, the site of photosynthesis. (9-12)
    • Plants and many microorganisms use solar energy to combine molecules of carbon dioxide and water into complex, energy rich organic compounds and release oxygen to the environment. (9-12)
  • Matter, energy, and organization in living systems
    • Living systems require a continuous input of energy to maintain their chemical and physical organizations. With death, and the cessation of energy input, living systems rapidly disintegrate. (9-12)
    • The energy for life primarily derives from the sun. (9-12)
    • Plants capture energy by absorbing light and using it to form strong (covalent) chemical bonds between the atoms of carbon-containing (organic) molecules. These molecules can be used to assemble larger molecules with biological activity (including proteins, DNA, sugars, and fats). (9-12)
    • Energy stored in bonds between the atoms (chemical energy) can be used as sources of energy for life processes. (9-12)
    • The chemical bonds of food molecules contain energy. (9-12)
    • Energy is released when the bonds of food molecules are broken and new compounds with lower energy bonds are formed. (9-12)
    • Cells usually store this energy temporarily in phosphate bonds of a small high-energy compound called ATP. (9-12)
    • The complexity and organization of organisms accommodates the need for obtaining, transforming, transporting, releasing, and eliminating the matter and energy used to sustain the organism. (9-12)
    • Matter and energy are conserved in each change. (9-12)