Question

Identify the SI unit that would be most appropriate for measuring the mass of each of the following objects. a. table b. coin c. a 250 mL beaker

Short answer

Table: kilograms (kg), Coin: grams (g), 250 mL beaker: grams (g)

Step-by-step solution

Identify the Mass of the Table

Consider the mass of a typical table, which can be quite large, often weighing several kilograms. The appropriate SI unit for larger masses is the kilogram (kg).

Determine the Mass of the Coin

Think about the mass of a typical coin, which is relatively small. It usually weighs a few grams. Hence, the appropriate SI unit for the mass of a coin is the gram (g).

Understand the Mass of the 250 mL Beaker

A common 250 mL beaker generally has a mass that is in the range of hundreds of grams. Therefore, the appropriate SI unit for the beaker is the gram (g).

Key concepts

mass measurement

Mass measurement is crucial in science and daily life. It helps us understand the quantity of matter in an object.
The standard way to measure mass is by using the International System of Units (SI).
This system ensures uniformity and precision in measurements worldwide.
Using SI units also simplifies communication and comparison of measurements between different disciplines and locations.

• Objects with larger masses use kilograms (kg).
• Smaller objects generally use grams (g).

For example, the mass of a table is measured in kilograms, while the mass of a coin is measured in grams.

kilogram

The kilogram (kg) is the SI base unit for mass. It is used for measuring larger masses.
A single kilogram is equivalent to 1000 grams (g).
This makes it a convenient unit for heavy items, like furniture. For example, a typical table can weigh several kilograms.
Always remember that 1 kilogram = 1000 grams. This conversion is helpful in many calculations and measurements.

• When dealing with large objects, use kilograms.
• Convert to grams when precise smaller measurements are necessary.

gram

The gram (g) is a smaller unit of mass used in the SI system. It is suitable for measuring lighter objects.
One gram is equal to 0.001 kilograms (kg).
This makes grams ideal for objects like coins or small laboratory equipment. For instance, a typical coin weighs a few grams.
Knowing how to convert between grams and kilograms can be very useful.

• 1 gram = 0.001 kilograms.
• For smaller masses, use grams.

For the 250 mL beaker, you would measure its mass in grams, as it usually weighs around hundreds of grams.

SI units

SI units (International System of Units) are the standard measurements used globally. They ensure consistency and accuracy.
There are several base units in the SI system, and the unit for mass is the kilogram (kg).
Using a standardized system helps with precision in science and everyday use.

• Kilograms (kg) are used for larger masses.
• Grams (g) are used for smaller masses.

By using the SI units, we can avoid confusion and make precise comparisons more straightforward.
For instance, when measuring the mass of a table, a coin, or a beaker, using the correct SI unit ensures the measurements are clear and accurate.