# Physical State - PowerPoint PPT Presentation

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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.

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Physical State

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### 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 determinehow matter is:

• Classified

• Changed

• Used