Measurement

The International System Unit [SI]

It was already a long time since the metric system was used for the first time. Although, it was officially established in 1960 during the 11th General Conference on Weights and Measures. 

Temperature

It measures the hotness or coldness of an object. It can also know if what direction is the flow of the hat. Like for an example, a glass of hot milk can be felt by the glass because heat is transferred. It always flows from a high temperature to a lower one. 

There are three temperatures scales we can choose. The three are Celsius (C), Fahrenheit (F) and  Kelvins (K). The boiling point of water is 100 degrees Celsius while its freezing point is 0 degrees Celsius. On the Fahrenheit scale, the freezing point is 32 F and the boiling point is 212 F. For Kelvin scale, the freezing point of water is 273 K and 373 K. Although when using kelvin, you do not put the degree sign. 

Derived Units

There are seven fundamental SI Units. These are the length, mass, time, electrical unit, temperature, amount of substance and luminous intensity. The mixture of these units are called derived units. One is speed which is the distance over time. Volume is a very important aspect especially during chemistry laboratory. There are many equipment to use to measure volume, examples are beaker, graduated cylinder, pipet, buret, syringe, volumetric flask and many more. The third example is the specific gravity which is the ratio of the density of any substance on a same temperature. 

Precision and Accuracy

Precision is one of the many ways on how to check measurements. It conveys how close to several measurement to a same value. Accuracy is also another way. It will tell you how close it is to the true or accepted value.