This resource has 27 correlations with the National Standards.  
[HIDE CORRELATIONS]

• Physical Science
  • 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)
  • Structure and properties of matter
    • Atoms interact with one another by transferring or sharing electrons that are furthest from the nucleus. (9-12)
    • An element is composed of a single type of atom. (9-12)
    • A compound is formed when two or more kinds of atoms bind together chemically. (9-12)
    • The physical properties of compounds reflect the nature of the interactions among its molecules. (9-12)
    • The interactions among molecules are determined by the structure of the molecule, including the constituent atoms and the distances and angles between them. (9-12)
    • Solids, liquids, and gases differ in the distances and angles between molecules or atoms and therefore the energy that binds them together. (9-12)
    • In solids the structure is nearly rigid; in liquids molecules or atoms move around each other but do not move apart; and in gases molecules or atoms move almost independently of each other and are mostly far apart. (9-12)
  • Structure of atoms
    • Matter is made of minute particles called atoms, and atoms are composed of even smaller components. (9-12)
    • Radioactive isotopes are unstable and undergo spontaneous nuclear reactions, emitting particles and/or wavelike radiation. (9-12)
    • The decay of any one nucleus cannot be predicted, but a large group of identical nuclei decay at a predictable rate and this predictability can be used to estimate the age of materials that contain radioactive isotopes. (9-12)
  • Chemical Reactions
    • Chemical reactions occur all around us, for example in health care, cooking, cosmetics, and automobiles. (9-12)
    • Chemical reactions may release or consume energy. (9-12)
    • A large number of important reactions involve the transfer of electrons (oxidation/reduction reactions). (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)
    • Catalysts, such as metal surfaces, accelerate chemical reactions. (9-12)

• Science as Inquiry
  • Abilities necessary to do scientific inquiry
    • Use data to construct a reasonable explanation.
    • Communicate investigations and explanations.
    • Use appropriate tools and techniques to gather, analyze, and interpret data.
    • Develop descriptions, explanations, predictions, and models using evidence.
    • Think critically and logically to make the relationships between evidence and explanations.
  • Understandings about scientific inquiry
    • Scientists use different kinds of investigations depending on the questions they are trying to answer.
    • Simple instruments, such as magnifiers, thermometers, and rulers, provide more information than scientists obtain using only their senses.
    • Scientists develop explanations using observations (evidence) and what they already know about the world (scientific knowledge). Good explanations are based on evidence from investigations. (K-4)
    • Different kinds of questions suggest different kinds of scientific investigations. Some investigations involve observing and describing objects, organisms, or events; some involve collecting specimens; some involve experiments; some involve seeking more information; some involve discovery of new objects and phenomena; and some involve making models. (5-8)
    • Conceptual principles and knowledge guide scientific inquiries. (9-12)
    • In presenting data, graphs are used to convey comparisons or trends. (9-12)