MD.4.0. Chemistry: Students will use scientific skills and processes to explain the composition, structure, and interactions of matter in order to support the predictability of structure and energy transformations.
4.B.1. Conservation of Matter: Provide evidence to support the fact that the idea of atoms explains conservation of matter.
4.B.1.b. Cite evidence from investigations that the total mass of a system remains the same throughout a chemical reaction because the number of atoms of each element remains the same.
4.B.1.c. Give reasons to justify the statement, 'If the number of atoms stays the same no matter how the same atoms are rearranged, then their total mass stays the same.'
4.D.3. Physical and Chemical Changes: Provide evidence to support the fact that common substances have the ability to change into new substances.
4.D.3.a. Investigate and describe the occurrence of chemical reactions using the following evidence: Color change; Formation of a precipitate or gas; Release of heat or light.
4.D.3.b. Use evidence from observations to identify and describe factors that influence reaction rates: Change in temperature; Acidity.
4.D.3.c. Identify the reactants and products involved in a chemical reaction given a symbolic equation, a word equation, or a description of the reaction.
4.D.3.d. Provide data from investigations to support the fact that energy is transformed during chemical reactions.