REVISION SCIENCE FORM 2 (CHAPTER 6)

1.

Multiple Choice

20 sec

1 pt

What is the properties of acid based on the activities below?

Apakah ciri bagi sifat asid berdasarkan aktiviti di bawah?

Acid tastes sour.

Asid mempunyai rasa masam.

Acid is corrosive.

Asid bersifat mengakis.

Acid has a pH value lower than 7.

Asid mempunyai nilai pH kurang daripada 7.

Hydrogen gas is released when an acid reacts with a metal.

Gas hidrogen terbebas apabila asid bertindak balas dengan logam.

2.

Multiple Choice

30 sec

1 pt

The following shows general equation of reaction between metal and acid.

zinc + hydrochloric acid > ?

Yang berikut merupakan persamaan umum tentang tindak balas logam dan asid.

zink + asid hidroklorik > ?

zinc hydrochloric/zink hidroklorik + hydrogen/hidrogen

zinc chloric/zink klorik + hydrogen/hidrogen

zinc chloride/zink klorida + hydrogen/hidrogen

3.

Multiple Select

20 sec

1 pt

Mark TWO fruits that have acidic properties.

Tandakan DUA buah yang bersifat asid.

pineapple/nanas

starfruit/belimbing

bitter gourd/peria

4.

Multiple Choice

30 sec

1 pt

State the relationship between the strength of acids and alkalis and pH values.

Nyatakan perkaitan antara kekuatan asid dan alkali dengan nilai pH.

The stronger an acid, the smaller its pH value, while the stronger an alkali, the smaller its pH value.

Semakin kuat suatu asid, semakin kecil nilai pH manakala semakin kuat suatu alkali, semakin kecil nilai pH.

The stronger an acid, the greater its pH value, while the stronger an alkali, the greater its pH value.

Semakin kuat suatu asid, semakin besar nilai pH manakala semakin kuat suatu alkali, semakin besar nilai pH.

The stronger an acid, the smaller its pH value, while the stronger an alkali, the greater its pH value.

Semakin kuat suatu asid, semakin kecil nilai pH manakala semakin kuat suatu alkali, semakin besar nilai pH.

5.

Multiple Choice

30 sec

1 pt

What can be observed on the red litmus paper?

Apakah yang dapat diperhatikan pada kertas litmus merah?

Red litmus paper change to blue

Kertas litmus merah bertukar biru

No change

Tiada perubahan

6.

Multiple Choice

30 sec

1 pt

Name the process that takes place when an acid reacts with an alkali.

Namakan proses yang berlaku apabila asid bertindak balas dengan alkali.

neutralisation/peneutralan

filtration/penapisan

flotation/pengapungan

titration/pentitratan

7.

Multiple Choice

30 sec

1 pt

Predict the colour change at the end point (neutral point) of the phenolphthalein.

Ramalkan perubahan warna pada takat akhir (takat neutral) fenolftalein.

colourless/tidak berwarna > pink/merah jambu

purple/ungu > green/hijau

pink/merah jambu > colourless/tidak berwarna

green/hijau > purple/ungu

8.

Multiple Choice

30 sec

1 pt

What is the volume of hydrochloric acid required to neutralise 25 ml of sodium hydroxide solution?

Berapakah isi padu asid hidroklorik yang diperlukan untuk meneutralkan 25 ml larutan natrium hidroksida?

15 ml

25 ml

30 ml

50 ml

9.

Multiple Choice

30 sec

1 pt

What will happen if the solution in the conical flask is heated until all the water are evaporated?

Apakah yang akan terbentuk sekiranya larutan di dalam kelalang kon dipanaskan sehingga semua air tersejat?

pink powder is produced/serbuk merah jambu terhasil.

white powder is produced/serbuk putih terhasil.

10.

Multiple Choice

30 sec

1 pt

Predict the taste for the powder formed.

Ramalkan rasa bagi serbuk yang terbentuk.

sweet/manis

sour/masam

salty/masin

bitter/pahit

11.

Multiple Choice

30 sec

1 pt

What is the function of phenolphthalein?

Apakah fungsi fenolftalein?

To indicate that the mixture in the conical flask is alkali.

Untuk menunjukkan campuran dalam kelalang kon adalah beralkali.

To indicate that the mixture in the conical flask is neutral.

Untuk menunjukkan campuran dalam kelalang kon adalah neutral.

To indicate that the mixture in the conical flask is acidic.

Untuk menunjukkan campuran dalam kelalang kon adalah berasid.

12.

Multiple Choice

30 sec

1 pt

Hydrochloric acid/Asid hidroklorik + sodium hydroxide/natrium hidroksida

-> ?

potassium nitrate/kalium nitrat + water air

sodium sulphate/natrium sulfat + water/air

sodium chloride/natrium klorida + water/air

13.

Multiple Choice

30 sec

1 pt

Sulphuric acid/Asid sulfurik + sodium hydroxide/natrium hidroksida ----> ?

potassium nitrate/kalium nitrat + water air

sodium sulphate/natrium sulfat + water/air

sodium chloride/natrium klorida + water/air

14.

Multiple Choice

30 sec

1 pt

Nitric acid/Asid nitrik + potassium hydroxide/kalium hidroksida ----> ?

potassium nitrate/kalium nitrat + water air

sodium sulphate/natrium sulfat + water/air

sodium chloride/natrium klorida + water/air

15.

Multiple Choice

30 sec

1 pt

A ‘pop’ sound is heard. What is the gas released?

Bunyi ‘pop’ kedengaran. Apakah gas yang terbebas?

carbon dioxide/karbon dioksida

oxygen/oksigen

hydrogen/hidrogen

nitrogen/nitrogen

16.

Multiple Choice

30 sec

1 pt

Cadangkan nilai pH yang mungkin bagi larutan X.

Suggest a possible pH value of solution X.

7

more than 7/lebih daripada 7

less than 7/kurang daripada 7

17.

Multiple Choice

30 sec

1 pt

The following are the results obtained by Jessie when she used indicator X to test materials. What is indicator X?

Berikut merupakan keputusan yang diperolehi oleh Jessie apabila dia menggunakan penunjuk X untuk menguji bahan A, B dan C. Apakah penunjuk X?

methyl orange/metil jingga

pH meter/meter pH

phenolphtalein/fenolftalein

universal indicator/penunjuk semesta

18.

Multiple Choice

30 sec

1 pt

A weak _____ such as vinegar neutralises a wasp sting that is _____.

_____ lemah seperti cuka meneutralkan sengatan tebuan yang bersifat _____ .

acid/asid ; alkali

alkali ; acid/asid

19.

Multiple Choice

30 sec

1 pt

The _______ of soil and water are reduced by adding slaked lime that is _______.

_______ tanah dan air dikurangkan dengan mencampurkan kapur mati yang bersifat _______.

alkaline/alkali ; acidity/keasidan

acidity/keasidan ; alkaline/alkali

20.

Multiple Choice

30 sec

1 pt

What is the method used in this activity?

Apakah kaedah yang digunakan dalam aktiviti ini?.

neutralisation/peneutralan

filtration/penapisan

flotation/pengapungan

titration/pentitratan

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