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This is due to the metal in the powder form having a larger surface area. There are 4 ways to increase the rate of reaction. Increasing the concentration of the reactants, increasing the temperature, addi...

A mole is a unit of 'amount of stuff' and is equal to 6.022x10²³. It is such a big number because we use the mole to describe how many atoms we have of something, so instead of saying "I h...

Fluorine has 1 more proton than oxygen and one more electron but the same number of shells so no increased shielding. This means there is more electostatic attraction from the nucleus so increased pull fr...

Potassium has 1 electron in its outer shell whilst Sulphur has 6 electrons in its outer shell, this can be deduced from the periodic table as Potassium is in group 1 and Sulphur group 6. When the two reac...

Titrations are used to make soluble salts (remember solubility rules) from an acid and an alkali. There are no solids involved in this reaction and the solutions made are colourless so there is no way of ...