A filament of a light bulb is made from a pure sample of tungsten. Which term or terms could be used to describe this sample of tungsten?
Matter can be classified into several categories. All substances are either pure chemical substances or mixtures.
Mixtures can be separated into their component parts through physical means, whereas pure chemical substances require chemical or nuclear reactions to separate them.
Pure chemical substances can be further divided into elements or compounds.
Mixtures can be either heterogeneous or homogeneous. Homogeneous mixtures are also called solutions
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