Question

Electrons contribute ______________ charge and ______________ mass to the atom. a.negative, a lot of b. little, a lot of c.negative, little

Answer 1

Electrons have a charge of -1 and a mass of 0 amu (atom mass).  I would go with C

Answer 2

The answer is C because electrons have a negative charge and contribute 2000 times less mass than protons and neutrons

Hope it helps :)