Question

points possible: 1.00
what should you always do before placing an object on the balance?
select one:
make sure the reading is zero.
turn it off and on again.
check that the balance is level.
clean the balance pan with water.

Explanation:

To get an accurate measurement on a balance, the first step is to ensure the reading is zero (taring the balance) before placing the object. Turning it off and on is not a standard pre - measurement step. Checking the balance is level is important but is usually done before setting up, and cleaning with water can damage the balance or affect measurement. So the correct action before placing an object is to make sure the reading is zero.

Answer:

A. Make sure the reading is zero.