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1) is water condensing a into liquid water a physical change or a chemical change?

2)what is the difference between dependent and independent variables when conducting an experiment?

Sagot :

1.) Water melting from a solid is cosidered a physical change. Because it dosnt change any chemical compounds.

2.)Variables used in an experiment or modelling can be divided into three types: "dependent variable", "independent variable", or other. The "dependent variable" represents the output or effect, or is tested to see if it is the effect. The "independent variables" represent the inputs or causes, or are tested to see if they are the cause. Other variables may also be observed for various reasons.
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