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A metal is a substance that conducts heat and electricity, is shiny and reflects many colors of light, and can be hammered into sheets or drawn into wire. Metals lose electrons easily to form cations . About 80% of the known chemical elements are metals.

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The important pieces of this frame are produced by metal.

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Bahan-bahan kimia; Kimia secara umum

The Group 1 elements, lithium (Li), sodium (Na), potassium (K), rubidium (Rb), cesium (Cs), and francium (Fr) react with cold water for form strongly alkaline hydroxide solutions, ...

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Bahan-bahan kimia; Kimia secara umum

An element with an incomplete d subshell. Elements which have common cations with incomplete d subshells are also considered transition metals. Elements with incomplete f ...

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Bahan-bahan kimia; Kimia secara umum

A nonmetal is a substance that conducts heat and electricity poorly, is brittle or waxy or gaseous, and cannot be hammered into sheets or drawn into wire. Nonmetals gain electrons ...

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Bahan-bahan kimia; Kimia secara umum

A compound that consists of only carbon and hydrogen, that contains at least one carbon-carbon double bond. Alkene names end with -ene. Examples are ethylene (CH2=CH2); 1-propene ...

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Bahan-bahan kimia; Kimia secara umum

A colloid formed from tiny liquid droplets suspended in another, immiscible liquid. Milk is an example of an emulsion.

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Bahan-bahan kimia; Kimia secara umum

An elementary particle produced by certain nuclear decay processes. Neutrinos have no charge and extremely small masses compared to other subatomic particles.

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Bahan-bahan kimia; Kimia secara umum

A device that senses temperature changes by using a pair of joined wires made of dissimilar metals that produces a voltage that changes with temperature.

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Bahan-bahan kimia; Kimia secara umum

An insulated vessel for measuring the amount of heat absorbed or released by a chemical or physical change.

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Bahan-bahan kimia; Kimia secara umum

1. An -OH group within a molecule. 2. A free radical formed by abstraction of a hydrogen atom from water.

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Recognition for excellence in film and television, presented by the Hollywood Foreign Press Association (HFPA). 68 ceremonies have been held since the ...