M.C.Q.: Choose the correct answer(s) 🧠

• 1. Taring an electronic balance ⚖️ means:
• Turning on the electronic balance Pressing the “Tare” button to reset the display to 0 g Turning off the electronic balance Placing an object on the balance

• 2. In which cases is it necessary to perform two measurements (or press the “Tare” button) ?
• Measuring the mass of a liquid 🧪 Measuring the mass of a gold nugget Measuring the mass of a large dog on a scale Measuring the mass of a powder 🧪

• 3. To measure the mass of air contained in a container, should we perform two measurements (or possibly press the “Tare” button)?
• Yes, two measurements are needed No, one measurement is enough It depends on the container

• 4.
  135.2 g corresponds to:
• the mass of the beaker the mass of the burning alcohol the mass of the beaker and the alcohol it is not possible to know

• 5.
  148.7 g corresponds to:
• the mass of the beaker the mass of the water the mass of the beaker and the water it is not possible to know

• 6. Two balances ⚖️ are used to measure the mass of a piece of meteorite ☄️ (extraterrestrial object).
  
  
  Which statements are correct ?
• Balance 1 is miscalibrated. The meteorite deteriorated between the two measurements. Balance 2 is more precise than Balance 1. The meteorite has a mass between 13.7 g and 13.9 g. Balance 1 is precise to the nearest gram.

📊 RESULT: