As the mass increases, the weight also increases correspondingly as the weight is directly proportional to the mass
Nothing. The mass will not change with a gravitational increase, but the weight will.
If your mass increases, your weight also increases.
it gets decreased
Nothing. If the volume is increased, the mass also has to increase.
the mass of the balloon increases because the size of the balloon has increased. :)
The weight of it increases
Momentum increases.
the balls decrease in speed
To get the weight, multiply the mass by the acceleration of gravity wherever the mass happens to be at the moment. Dependoing on local acceleration of gravity, the weight changes from place to place.
If the mass of the Earth were to increase, your weight might go up. Or it might not, depending on how the new mass was distributed. If the diameter of the Earth also increased, then you might be enough farther away from the increased mass that your apparent weight would be the same or even go down. In order to increase the mass of the Earth by enough to make a real difference, the Earth would need to get new mass by colliding with a large asteroid or another planet. In that case, your increased weight would be the least of your worries, since we would all be dead.
Nothing, but his weight is 1/6 of his weight on Earth.
An oxide is formed and the mass is increased.