When we eat sugar, the brain releases dopamine and serotonin, the hormones that boost your mood, which then stimulate the nucleus accumbens – the area of the brain associated with reward. This is a similar process that leads to drug addiction, which is why we get those sugar cravings.
Second one! Your personal life can affect your job performance for good or bad.
Most of the particles would pass through with a few moving at small angles because the atom was a low-density, positive material with electrons in it.