Group 5 Mass

Group 5

What is mass??

Mass is a measure of the amount of matter in a substance.

How do we measure mass????

We measure it by using some apparatus like the electronic balance and the beam balance. The S.I. Unit for mass is kilograms/kg.

First, we will present about the electronic balance. It is a device that measures mass and has an accuracy of 0.1grams.

For example, you want to find out the mass of 60ml of water.

Here are the steps on how to use it:

1:Turn it on and wait for the screen to show zero.

2: Place an empty beaker on the electronic balance.

3: Wait for the mass to be stable and press the re-zero button.

4: Pour the 60ml of water into the beaker.

5: The reading that appears on the screen is the mass of the 60ml of water.

(The video took a very long time to load) Here are some pictures of the electronic balance:

Lastly, here is the beam balance. It is also a device that measures mass and has an accuracy of 0.1grams. It is used to weigh small amounts of chemicals.

For example, you want to find out the mass of 60ml of water. Here are the steps on how to use it:

1: Slide back all the weight poises so that the pointer is pointing to the zero mark.

2: Place the beaker with water on the balance platform and you will observe that the pointer goes up.

3: Slide the weight poises until the pointer is at the zero mark again. Move the 2 heavier weight poises which are the 2 bigger ones followed by the lightest one to do the fine tuning.

4: To read the weight of the beaker of water in grams, add up the value shown on each weight poise.

Here are some pictures of the beam balance (We could not upload the video):

This is how the pointer looks like when it is pointing to the zero marking:

By:

Group 5

Charrise Su (6)

Janna Lim (16)

Melissa Khoo (19)

Megan Yeo (22)