Oh Yeah
COPPER REACTIONS
Johannes Christian A. Santos
Christian R. Santos
De La Salle University-Dasmariñas
Dasmariñas, Cavite Philippines
ABSTRACT
The densities of several liquid and solid samples were determined as an exercise in measurement. Density, being an inherent and intensive property of a substance, was also used to determine the identity of an unknown liquid sample. Proper procedures on measurement were observed in order to determine the mass, volume, and density of the samples. Four liquid samples were used namely water, isopropyl alcohol, coconut oil, and an unknown liquid sample. The experimental density values were measured at 1.01 g/ml, 0.800 g/ml, 0.940 g/ml, and 0.800 g/ml respectively. The range of percentage error was below 5.00% for all the samples. The unknown liquid was identified as kerosene by comparing the measured density with its theoretical value. For the solid samples a wood block, a marble, and pebbles were used. The experimental density values were measured at 0.500 g/cm3, 1.99 g/cm3, and 2.61 g/cm3 respectively. The over-all success of the experiment was hinged on the accuracy of measuring the needed quantities and the mentioned results attested that such success was achieved.
INTRODUCTION
Measurement is the process of determining an unknown quantity by comparing it to a known standard. Such process would require proper observations of needed procedures in order to ascertain the accuracy and integrity of the measured quantities. In this experiment, the densities of several solid and liquid samples were determined as an exercise in measurement. Density is the measure of compactness of a substance which is mathematically expressed as the ratio of mass with volume. Density is an inherent property of pure substance, which means that it is constant at a specific temperature. It is also an intensive property, which means that it does not vary with the amount of the substance at hand. It is therefore useful
Johannes Christian A. Santos
Christian R. Santos
De La Salle University-Dasmariñas
Dasmariñas, Cavite Philippines
ABSTRACT
The densities of several liquid and solid samples were determined as an exercise in measurement. Density, being an inherent and intensive property of a substance, was also used to determine the identity of an unknown liquid sample. Proper procedures on measurement were observed in order to determine the mass, volume, and density of the samples. Four liquid samples were used namely water, isopropyl alcohol, coconut oil, and an unknown liquid sample. The experimental density values were measured at 1.01 g/ml, 0.800 g/ml, 0.940 g/ml, and 0.800 g/ml respectively. The range of percentage error was below 5.00% for all the samples. The unknown liquid was identified as kerosene by comparing the measured density with its theoretical value. For the solid samples a wood block, a marble, and pebbles were used. The experimental density values were measured at 0.500 g/cm3, 1.99 g/cm3, and 2.61 g/cm3 respectively. The over-all success of the experiment was hinged on the accuracy of measuring the needed quantities and the mentioned results attested that such success was achieved.
INTRODUCTION
Measurement is the process of determining an unknown quantity by comparing it to a known standard. Such process would require proper observations of needed procedures in order to ascertain the accuracy and integrity of the measured quantities. In this experiment, the densities of several solid and liquid samples were determined as an exercise in measurement. Density is the measure of compactness of a substance which is mathematically expressed as the ratio of mass with volume. Density is an inherent property of pure substance, which means that it is constant at a specific temperature. It is also an intensive property, which means that it does not vary with the amount of the substance at hand. It is therefore useful
References: (1) Brown, T.L..; Lemay, H.E.; Bursten, B.E.; Murphy, C.J. Chemistry: The Central Science. 11th Edition. 2008. Prentice Hall. USA. (2) Figueroa, L. and Samonte.J. Laboratory Manual in General Chemistry. 3rd Edition. 2010. C&E Publishing. Philippines.