1.4 Act 3
Mass of Objects
1. Suppose that one lab group reported the following results for the mass of the same object they
measured several times.
trial
1
2
3
4
mass (g)
13.54
13.56
13.55
13.54
Is there a problem with the balance? Explain. What is the best way to report the mass of the
object?
2. A lab group found the mass of a ball of clay to be 15.20 g. They carefully flattened the ball of
clay into a pancake, then put the clay on the pan of the balance. What mass should they expect
for the piece of clay? Explain.