2 - 3 Measuring Mass and Volume

Question 1

Mass

Answer 1

• Amount of matter in an object
• Instruments: Triple Beam Balance
• Units: Grams

Question 2

How to use a triple beam balance

Answer 2

• Place the object on the pan.
• Move over the 100g slider till the pointer moves down then go back one.
• Move the 10g slider over till the pointer moves down then go back one.
• Move the 1g slider over till the needle is balanced.
• Add all of the slider values for the mass.

Question 3

Volume

Answer 3

• Amount of space something takes up
• Instruments: Graduated Cylinder, Ruler
• Units: Graduated Cylinder (mL), Ruler (cm3)
• V = LxWxH

Question 4

Using the Displacement Method

Answer 4

• Step 1 – Measure the volume of water in a graduated cylinder. (Initial Volume)
• Step 2 – Gently place the object in the graduated cylinder.
• Step 3 – Measure the new volume of the water.
• Step 4 – Subtract the difference between your initial volume and your new volume.
• Volume of Object = New Volume – Initial Volume

Question 5

How do we measure volume of an irregular object?

Answer 5

Always read the bottom of the meniscus!