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