Change In Mass Lab

CORROSION LAB REPORT
THE CHANGE IN MASS(­±0.005g) OF VARIOUS TYPES OF CORROSIVE METALS WHEN PLACED IN A SOLUTION OF 1 MOLAR CONCENTRATION OF HYDROCHLORIC ACID OVER A PERIOD OF 8 DAYS AT AN AVERGAE ROOM TEMPERATUR OF 24 DEGRESS CELCIUS.
Research Question: Does the mass(±0.005g) of various types of corrosive metals (iron, nickel, zinc, copper and tin) change when placed in a solution of 1 molar hydrochloric acid over a period of 8 days at an average room temperature of 24 degrees Celsius?
Aim: To be able to record and understand if and why a change in mass (±0.005g) occurs in various types of corrosive metals that include iron, nickel, copper, zinc and tin when placed in a solution of 1 molar concentration of hydrochloric acid over a period of 8 days at an average room temperature of 24 degrees Celsius.
Hypothesis: In my prediction, there will be a negative change in mass (±0.005g) in the various types of metals (iron, nickel, zinc, copper and tin)
Both the type of metal and the environmental conditions, determine the rate of deterioration. In this experiment I observed a change in mass of different types of metals when placed in a solution of hydrochloric acid with a concentration of 1 molar over a period of 8 days at 24 degrees Celsius. There was a decrease in the average mass of each type of metal after corrosion which correctly supports my hypothesis and secondary web sources that claim a decrease in the mass (±0.005g) of metals after corrosion due to its reaction with hydrochloric acid (1 molar). For example: the average weight of iron measured before corrosion is 0.11g and after corrosion it is 0.082g thus causing a change in mass percentage as -25% (as depicted in the graph). Therefore, this experiment is accurately completed by fulfilling my aim, that was to find out if and why a change in mass was observed after