Properties of Matter Glencoe Physical Science C15S2 Holt McDougal Physical Science C2S2.
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Transcript of Properties of Matter Glencoe Physical Science C15S2 Holt McDougal Physical Science C2S2.
Propertiesof
MatterGlencoe Physical Science C15S2
Holt McDougal Physical Science C2S2
NGSS Florida Standard
• SC912P8.2• Differentiate between physical and
chemical properties and physical and chemical changes of matter
What are Physical Properties?• Physical property = characteristic that
can be observed without changing the identity of the substance.
• Properties of an object are determined by the properties of the materials the object is made of
Measurable properties
• Strength
• Hardness
• Magnetism
• Ability to conduct heat
• Ability to conduct electricity
Which Physical Properties Depend on Amount
• Mass
• Volume
• Area
Which Physical Properties Do Not Depend on Amount
• State of matter
• Melting point
• Boiling point
• Density
About Melting Point and Boiling Point• State = the physical form of a
substance
• Melting Point = temperature at which a substance changes from a solid to a liquid
• Boiling Point = temperature at which a substance changes from a liquid to a gas
Density
• The amount of matter in a certain volume of a substance
• Density = mass/volume
• On your whiteboard, calculate the density for a 10.0cm3 of ice that has a mass of 9.17kg.
How would you answer?• What determines the properties of an object?
• What are two physical properties of an object that depend on the amount of material you have?
• What is a state?
• What is the density of 10kg mass of water?
• How would you rearrange the density equation to show how to find the mass of a substance if you know the volume and density?
• If a piece of metal has a density of 11.3g/cm3 and a volume of 6.7 cm3, what is the mass of the metal?
Density vs. Weight
• Weight = exertion of gravity upon matter; linear measurement
• Density = concentration of mass in a given volume; derived measurement
What Are Chemical Properties?• Chemical property = how a substance
changes into a new substance
• Not as easy to observe as physical properties
• Substances combine or break apart
Examples of Chemical Properties• Flammability = the ability to burn
• Nonflammability = the inability to burn
• Reactivity = ability of a substance to react with another substance
More About Reactivity
• Reactive elements are usually found as compounds
• Less-reactive elements are more likely to be uncombined.
Which type property is it?
Material or object
Observation Physical or chemical property?
Chalk Forms bubbles when put into vinegar
Ice cream Melts in the sun
Tin Bend easily
Paper Burns quickly
Liquid water Evaporates
Car door Starts to rust
Helium balloon Floats in air