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Chapter 1 Notes. The Properties of Matter. What is Matter?. Matter is anything that has Mass and Volume Mass is the amount of matter an object contains. Units: grams (g), kilograms (kg) Volume is the amount of space an object takes up.

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chapter 1 notes

Chapter 1 Notes

The Properties of Matter

what is matter
What is Matter?
  • Matter is anything that has Mass and Volume
  • Mass is the amount of matteran object contains.
    • Units: grams (g), kilograms (kg)
  • Volume is the amount of space an object takes up.
    • Units: liquids: liters (L), milliliters (mL),

Solids: cubic centimeters (cm3)

mL = cm3

vocabulary you need to know
Vocabulary YOUneed to know!

Meniscus

Read at the bottom of the meniscus!

physical properties
Physical Properties
  • Physical properties can be observed or measured without changing the identity of the matter.
  • Examples:
    • Color
    • Odor
    • Mass
    • Volume
    • Density (Density = Mass/Volume)
    • State – Solid, Liquid, or Gas?
    • Malleability – Can I flatten it?
    • Ductility – Can I stretch it into a thin wire?
    • Solubility – Can I dissolve it in something?
    • Thermal Conductivity – Does it carry heat?
chemical properties
Chemical Properties
  • Chemical properties describe a substance’s ability to change into a new, different substance with different properties.
  • Examples:
    • Flammability – Does it burn?
    • Reactivity – Does it react when mixed with some other substance to make a new substance?
characteristic properties
Characteristic Properties
  • Characteristic properties are always the same, whether the object is large or small.
  • Characteristic properties can be physical or chemical.
  • Examples: Examples that are NOT:
    • DensityᵒSize
    • Solubility ᵒ Volume
    • Reactivity ᵒ Shape
    • Boiling Point ᵒ State of Matter
physical changes
Physical Changes
  • In a physical change, a physical property changes, but the identity of the substance does not change.
  • Physical changes are sometimes easy to undo
  • Examples:
    • Melting ice or boiling water
    • Ripping paper into pieces
    • Dissolving sugar into water
chemical changes
Chemical Changes
  • In a chemical change, a substance changes into a different substance.
  • Chemical changes are usually difficultto undo.
  • Examples:
    • Burning wood or “snakes”
    • Spoiling milk (curdling)
    • Rusting metal
    • Baking a cake
evidence of a chemical change
Evidence of a chemical change
  • Change in color (unexpected)
  • Unexpected change in temperature

Endothermic – heat is absorbed. (feels cooler)

Exothermic – heat is released. (feels hotter)

  • Gas produced (bubbles appear, foaming)
  • Odor produced (smells)
  • A solid forms (precipate) when two liquids are mixed
  • Electricity is generated
  • Light is produced
  • Fire is produced
try it
Try it!
  • http://www.gamequarium.org/dir/Gamequarium/Science/Physical_and_Chemical_Changes/