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To Discover What Affects the Rate of Reaction Between Marble Chips (Caco3) and Hydrochloric Acid (Hcl)
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Chemistry coursework AIM: The aim of this experiment is to discover what affects the rate of reaction between marble chips (CaCo3) and Hydrochloric acid (HCl) PLANNING: My group and I are going to measure the amount of gas given off from the reaction between CaCo3 and HCl. We are going to time the reaction and measure the amount of gas in the graduation tube, recording the amount every minute. We are using three different sized pieces of CaCo3: small (<0.5cm diameter), medium (( 0.5cm <0.7cm diameter), and large (> 0.7cm diameter). For each of the three different experiments we used the same mass of CaCo3 (0.5g) although the surface are was very different for each experiment because of the different sizes of CaCo3. VARIABLES / FAIR TEST: The variables are the things in my experiment which can change and alter my experiment. The first variable is the marble chips, the surface...
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