Physical Properties of Matter

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Presentation transcript:

Physical Properties of Matter Color Odor Mass Volume Density Thermal Conductivity State Malleability Ductility Solubility Physical Property: A physical property of matter can be observed without changing the identity of the matter.

Chemical Properties of Matter Flammability Non flammability Reactivity (general) Specific: with oxygen with bleach with acid Chemical Property: A chemical property can be observed only when one substance might become a new substance

What is the difference between a physical and chemical change? When a substance undergoes a physical change, its identity remains the same. Ex: Ice melting Cutting your hair Bending wire Cutting wood (physical changes can often be undone.) When a substance undergoes a chemical change new substances with different properties are formed. Ex: Steel reacts with oxygen to form rust Baking a cake Milk souring (chemical changes cannot be undone without further chemical changes)

Evidence of Chemical Change Color Change Bubbles Heat Odor Light Precipitate

Examples of Chemical Changes

Sulfuric acid and sugar Heating sugar

Exothermic vs. Endothermic Gives off Heat Takes in energy/becomes cold

Forms a PRECIPITATE

A = 0.5 M copper (II) sulfate B = 0.5 M sodium thiosulfate