Measuring Mass with Triple Beam Balance

What part of the triple beam balance holds the object you want to weigh?

• The beam

• The pan

• The zero marker

• The riders

Which part of the triple beam balance helps you measure the mass by sliding along the beams?

• The pan

• The pointer

• The riders

• The base

What are the three different amounts that the riders on a triple beam balance can measure?

• 1 gram, 10 grams, 100 grams

• 0.1 gram, 1 gram, 10 grams

• 0.1 gram, 10 grams, 100 grams

• 10 grams, 100 grams, 1000 grams

Before you start measuring, what should you make sure all the riders and the zero marker are set to?

• The highest number

• The lowest number

• Zero

• Any number you choose

How do you know when the triple beam balance is correctly balanced for an object?

• The pan touches the table.

• The pointer is balanced at the zero point.

• All riders are at their highest numbers.

• The object falls off the pan.

When measuring an object directly, which rider should you move first to find its mass?

• The smallest rider (0.1 gram)

• The middle rider (100 gram)

• The largest rider (10 gram)

• Any rider can be moved first

Why is the "mass by difference" method used to measure the mass of a liquid?

• Liquids are too heavy for the balance.

• Liquids can spill if poured directly onto the pan.

• Liquids evaporate too quickly.

• Liquids are always measured in containers.

What is the first step when finding the mass of a liquid using the "mass by difference" method?

• Pour the liquid onto the pan.

• Measure the mass of the empty container.

• Measure the mass of the liquid only.

• Add the liquid to the container and then measure.

Why should you use weighing paper or a container when measuring out a solid chemical substance?

• To make the chemical look nicer.

• Chemicals should never touch the balance pan directly.

• The paper helps the chemical stay in place.

• It makes the chemical easier to see.

When measuring out a specific amount of a solid chemical, after finding the mass of the weighing paper, what should you do next?

• Remove the weighing paper and add the chemical directly to the pan.

• Add the desired amount to the riders, then slowly add the chemical to the paper.

• Add all the chemical at once to the paper.

• Subtract the mass of the paper from the desired chemical mass.