Term 1~

OMG! First term in HCI and.... it's wonderful. On our first Science Lesson, we met our Science Teacher Ms Nada !~ :) And guess what.........she ROCKzzz !!

We started off with the Introduction to Science& Technology and the topics we will be learning for the term.
Then, Ms Nada talked about the DOs and DON'Ts in the science lab:

Laboratory Safety Rules
Before the experiment
1. DO NOT enter the lab without the teacher's permission.
2. Read and understand the experiment fully before carrying out the experiment.
3. Wear safety goggles whenever conducting experiments involving the heating and mixing of harmful chemicals. Also try to minimize the handling of harmful chemicals like carrying it around.
4. NO foods and drinks are allowed in the lab.

During the experiment
1. DO NOT run around and play especially when holding harmful chemicals.
2. DO NOT play with the electric mains and the electric cables.
3. Report any spillage of chemicals or any broken apparatus immediately.
4. Wash your clothes or any part of your body if any chemicals spilled on your clothes.
5. DO NOT taste or smell the chemicals. It might be fatal!
6. When mixing or boiling chemicals in a test tube, always point the mouth away from your friends or you.

After the experiment
1. Dispose of materials and chemicals properly as instructed by the teacher. Do not pour excess chemicals back into its container to prevent contamination.
2. Do not remove chemicals or apparatus from the lab without permission.
3. Wash and clean all apparatus after using and return them to their proper storage
4. Wash hands after experiments, especially after handling chemicals

She also asked us about the Attitudes of a Scientist
A Scientist should have these qualities:

-Curiosity

-Perseverance

-Positive

-Open-minded

-Cooperation

-Patience

After that, we touch on to the symbols of hazards.

These are some basic ones:

 

Now, my favourite part, Drawing of Laboratory Apparatus.

I love drawing but when I draw, the edges of the apparatus is always came out quite fuzzy. Ms Nada said that the apparatus cannot be fuzzy and we have to use a ruler to draw the straight parts of the apparatus. My drawings skills still need more practice~ So I won't show my drawings lah~

We also learnt about How To Light Up a Bunsen  Burner.

Here is a picture of a Bursen Burner.....

 




















And here are the steps to light up a bursen burner:

1. Check the gas tap if it is closed

2. Close the air-hole

3. Put the lighter above the barrel

4. Turn on the gas tap

5. Strike the lighter to ignite the gas

6. Open the air-hole until a non-luminous flame is obtained

 

There are three types of flame:

Luminous flame:

• Produce when the air-hole is close completely

• Insufficient is allow to mix with the gas therefore gas not burn completely

• Orange in colour

• Appear flickering and unsteady

Non-luminous flame:

• Occur when the air-hole is open partially

• Sufficient air is allow to mix with the gas therefore gas is burn completely.

• Blue in colour

• Burn steadily

• Hotter than luminous flame

Strike back:

• Occur when the air-hole is completely open

• There is large supply of air

• Green in colour

• EXTREMELY HOT !!!!!! (That's why close the air-hole is IMPORTANT!)