Combustion , neutralisation and many oxidation reactions are examples of (1) reactions , because HEAT ENERGY is -(2) the surroundings. 1:endothermic;2: taken from 1: exothermic;2: taken from 1:endothermic 2: given to 1.exothermic 2: given to

## Step 1:Analyse the types of the reactions and understand their nature regarding the involvement of heat energy.## Step 2: Start with 'combustion', which we following the understanding from the example, is exothermic, meaning heat energy is released.## Step 3: Move onto 'neutralisation'. Here, this reaction involves acid and base reacting to neutralise each other producing salt and water. This is also an example of exothermic reactions, as heat is released in the process.## Step 4: Consider 'oxidation reactions'. In general, when a molecule, atom, or ion loses electrons, this process is recognized as oxidation. Many oxidation reactions are exothermic manner, releasing heat energy.## Step 5:Putting the above analyses together, it could be concluded that combustion, neutralisation and many oxidation reactions are exothermic; they give heat energy to the surroundings.###