| Hamble Ref | HT ONLY | Sep ONLY | Student Checklist Question | 1 | 2 | 3 |
|---|---|---|---|---|---|---|
| C1.5.01 | What is the law of the conservation of mass? | |||||
| C1.5.01 | Why must we ensure that chemical equations are balanced? | |||||
| C1.5.01 | What do the multipliers in normal script before a chemical formula represent? Eg 2MgO | |||||
| C1.5.02 | How do we calculate the relative formula mass (Mr) of a compound? | |||||
| C1.5.02 | Why must the total relative formula mass of all of the reactants equal that of all of the products made? | |||||
| C1.5.03 | When a gas is produced in a chemical reaction, why would the mass of the products appear to be less than that of the reactants? | |||||
| C1.5.03 | Explain why in the reaction below the mass of the products would be greater than that of the reactants 2Mg (s) O2 (g) -> 2MgO (s) |
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| C1.5.03 | What does the term uncertainty mean? | |||||
| C1.5.03 | How would you represent the distrubtion of results to make estimations of uncertainty? | |||||
| C1.5.03 | A pippette has an uncertainty of /-0.01mL. It is used three times in a practical. What is the mean measure of uncertainty? | |||||
| C1.5.05 | What units are used for the measurement of concentration of a solution? | |||||
| C1.5.05 | What is the concentration of a solution that has 37g of solute dissolved in 100cm3? Give your answer in dm3. | |||||
| C1.5.05 | Why industrially is high atom economy important? | |||||
| C1.5.07 | What is meant when a reactant is described as a limiting reactant? |