Physical Property

• A characteristic of a substance that can be observed without changing the substance into something else

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Physical Change

• A change that alters the form of appearance of a substance, but does not make the material into another substance

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Chemical Property

• A characteristic that is observed when a substance interacts with another substance.

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Chemical Change

• A change in matter that produces a new substance

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Mass

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Volume

Density

Density= Mass/Volume

Metals

• a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivity (e.g., iron, gold, silver, copper, and aluminum, and alloys such as brass and steel).

Nonmetals

• Any of a number of elements, such as oxygen or sulfur, that lack the physical and chemical properties of metals.

Metalloids

• an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. They are electrical semiconductors.

Malleable

• able to be hammered or pressed permanently out of shape without breaking or cracking

Luster

• the state or quality of shining by reflecting light

ductile

• able to be drawn out into a thin wire.

Forms of Energy

Potential EnergyChemical EnergyNuclear EnergyStored Mechanical EnergyGravitational Energy

Kinetic EnergyRadiant EnergyThermal EnergyMotion EnergySound EnergyElectrical Energy