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Physical and Chemical Properties & Changes

Explore physical and chemical properties, changes, and measurements in science. Learn about matter, observations, states of matter, and metallic properties. Discover the difference between physical and chemical changes through detailed explanations.

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Physical and Chemical Properties & Changes

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  1. Physical and Chemical Properties & Changes Mrs. Hooks 6th Grade Science

  2. Physical Properties • Physical Properties- any characteristic that can be observed or measured without changing the identity of the object. • Observations are made using your 5 senses • Sight • Hearing • Touch • Smell • Taste- NO NO!! Do not taste in labs!! • Matter- anything that has mass and takes up space.

  3. Physical Properties continued…. Physical Properties (ob- observable, m- measured) • Color (Ob) • Size (ob) • Shape (ob) • Length (ob/m) • Mass (ob /m)- the amount of matter in an object • Volume (ob/m)- the amount of space an object takes up • Density- (ob/m)- the amount of mass a material has in a given volume D=M/V

  4. Physical Properties Continued…… • 8. State of matter (ob)- depends on its temperature and pressure. Solid, liquid, gas, and plasma • 9. melting point (ob/m)- the temperature at which a solid becomes a liquid • Temperature at which a solid becomes a liquid is 0 ° Cwater • 10. boiling point (ob/m- the temperature at which a substance in the liquid state becomes a gas. • Temperature at which a liquid becomes a gas 100°Cwater

  5. Metallic Properties Physical properties of metals • Luster • Malleability- ability of some metals to be hammered, pressed, or rolled into thin sheets • Ductility- ability of some metals to be drawn into wires.

  6. Physical Change • The physical properties of a substance change, but the identity of the substance does NOT change. • Ask yourself 2 Question…… 1. Is the substance still the same thing? YES 2. Can I change it back? YES THEN IT IS A PHYSICAL CHANGE!!!!

  7. Dichotomous Key • A tool used to determine the physical properties or characteristics to determine the identity of a specimen and classify them.

  8. Measurements • Massgram • Densityg/cm³ • Length centimeter, meter • Volumecm³

  9. Chemical Properties • Chemical property- any characteristic that gives a substance the ability to undergo a change that results in a new substance • Flammability • Reacts with oxygen • Reacts with water • Reacts with light

  10. Chemical Change • A change in the identity of the substance due to the chemical properties of that substance. Ask yourself 2 Question…… 1. Is the substance still the same thing? NO 2. Can I change it back? No THEN IT IS A chemical CHANGE!!!!

  11. Here’s your sign! • If you observe one of these things, chances are it is a Chemical Change! • Bubbles • Production of heat • Production of light • Smoke • Change in color (can be either P or C) • Production of sound Chemical Change

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