820Interpret the results of an investigation to determine
whether a physical or chemical change has
occurred.
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
Key concepts/skills:Level 1: Define key vocabulary.Level 2: Identify the chemical and physical properties of matter.Level 3: Distinguish between physical and chemical changes given investigations or situations.
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
Key vocabularyPhysical properties
flammabilityPhysical change reactivityChemical propertiesChemical change
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.I. Physical Properties
A. Size, Shape, Color, Odor, Texture, things that can be observed with senses
B. Change of state, malleability, ductility, conductivity
C. All Physical properties change during a chemical reaction
D. Physical Properties > New Physical Properties
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
II. Chemical PropertiesA. Flammability – how easily a substance burnsB. Reactivity – how easily a substance reacts with
othersC. A substances chem. props. Going into a
reaction change completely and the substance coming out of the reaction has new chemical properties
D. Chem Props. > New chem. Props
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
III. Physical changesA. A change in physical properties without
changing the identity of the substance (paper is still paper)
B. Note phys props. change but not chem. props.
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
I. Chemical Changes A. When one or more substance changes
into new substances with new chem. and phys. props.
B. Note Chem. and Phys. props change with a chem. Change
C. Chem. Changes are not reversible by any physical means
1. Is gas, heat, or light given off? If Yes Chemical2. Does the substance maintain its identity? If yes physical3. Are more than 2 physical properties
changed? If yes chemical
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
Interpret the results of an investigation to determine whether a physical or chemical
change has occurred.
Chemical or physical change?