Science Form 3 Chapter 8 KSSM

Antoine Henri Becquerel has discovered...

• A. ionising power

• B. X-rays

• C. radioactivity

• D. polonium and radium

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NGSS.HS-PS1-8

Below is the Scientist that involved with radioactivity discovery...

• A. Marie and Pierre Curie

• B. Marrie and Pierre Wilhelm

• C. Marie and Henri

• D. Marie and Becquerel

Radioactive radioation consist of...

• alpha radiation

• ionising radiation

• beta radiation

• gamma ray

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NGSS.HS-PS1-8

"A random and spontaneous process where an unstable nucleus emits radioactive radiation until the nucleus becomes more stable.."

The statement above refer to...

• A. Half -life

• B. Nuclei decay

• C. Radioactivity

• D. Radioactive decay

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NGSS.HS-PS1-8

Iodin-131 decays with half-life is 8 days to become Xenon-131. Calculate the mass of Iodin-131 after 24 days with a mass of 60g.

• A. 7.5 g

• B. 8.5 g

• C. 12.5 g

• D. 15.5 g

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NGSS.HS-PS1-7

All examples below were radioactive substance, excpet for....

• A. Uranium-235

• B. Radon-222

• C. Thorium-234

• D. Carbon-16

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NGSS.HS-PS1-8

What happen to the oxygen atom?

• A. Loses 1 electron

• B. Received 2 electrons

• C. Nothing happen

• D. Have +2 charges

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NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following above is neutral?

• A. P

• B. Q

• C. R

• D. S

The diagram abpve shows one source of ionising radiation. Choose from the answer below the natural ionising radiation.

• A. Nuclear test

• B. Nuclear accidents

• C. Cosmic radiation

• D. Radioisotopes in medicine

Note : Ionising radiation dose of televisyen : 0.01mSv/h

Everydays, Batani will watch televisyen for 6 hours. Calculate the dose of ionising radiation received by Ahmad if he repeats the habit for a week.

• A. 0.21 mSv

• B. 042 mSv

• C. 0.40 mSv

• D. 0.42 mSv

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NGSS.HS-PS4-5