physical state
DESCRIPTION
Physical State. Matter can exist in three forms, or physical states: liquid, solid, or gas. Matter can change from one physical state to another by the processes of melting, freezing, evaporation, and condensation. Temperature changes can affect changes in state. Mass. - PowerPoint PPT PresentationTRANSCRIPT
Physical State
• Matter can exist in three forms, or physical states: liquid, solid, or gas.
• Matter can change from one physical state to another by the processes of melting, freezing, evaporation, and condensation.
• Temperature changes can affect changes in state.
Mass
• Mass is the amount of matter in an object. • Mass is measured with a balance.• Mass is not the same as weight. • Weight is a measurement of the pull of
gravity on an object. • Weight is measured with a scale.
Magnetism
• Matter that contains iron, nickel, cobalt, or steel will be attracted to a magnet.
• Not all metals are attracted to a magnet.
Relative DensitySinking & Floating
• Weight doesn’t determine if an object will sink or float.
• The volume of an object and how much “stuff” (matter) is in the object will determine the density.
Conduction
• Some materials allow thermal (heat) energy or electrical energy to flow through them easily.
• These materials are called conductors.
Insulation
• Some materials do not allow thermal (heat) energy or electrical energy to flow through them easily.
• These materials are called insulators.
Solubility in Water
• Solubility refers to the ability of a substance to dissolve when added to water.
• A liquid, solid, or gas can be dissolved in water. Examples may include lemon juice in water, sugar in tea, and the carbonation in a soda.
Does it Matter?
• Matter has properties that can be observed and measured.
• These properties determine how matter is: Classified Changed Used