Is it possible for an object to lose weight but at the same time not lose any
mass?

It is possible for an object to loose weight and not loose mass.

The weight of a  body is obtained as W= mg where;

W = weight of the body

m = mass of the body

g = acceleration due to gravity

Since the magnitude of the weight of a body depends on its mass, and acceleration due to gravity it is possible for an object to loose weight and not loose mass.

The value of acceleration due to gravity is not the same at all points in the universe. Hence, if an object is moved to a location where the value of acceleration due to gravity is lower, the object will loose weight but not mass.

The mass of an object is constant and does not change irrespective of the location where it is measured.

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NO

Explanation:

When you lose weight, you lose mass. These to are directly linked together

Consider this: weight=mass×gravity

If weight decreases, mass also decreases basing on the expression. Gravity is constant (meaning it will not change because mass or weight changes) so it will not impact the result.

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every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.

it forms an anion that has a larger radius. anions have a negative charge and are larger than the original atom.