өзгермелі

өзгермелі

A quantity that can have many possible values. In designing experiments, variables that affect measurements must be identified and controlled. For example, an experiment that measures reaction rates must control temperature, because temperature is a variable that can change the rate of reaction.

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行业/领域：化学
类别普通化学
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A variable which can only be measured in whole, individual units if it is to have any real meaning e.g numbers of people.

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A variable that is accessible from anywhere in a program.

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

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

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

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行业/领域：节日类别万圣节

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Also known as All Hallow's Eve, Halloween is an annual holiday celebrated on October 31st in America, Canada, and the UK. It is supposedly the one day ...