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- 1. Multiple Choice
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
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 Choice
Mark TWO fruits that have acidic properties.
Tandakan DUA buah yang bersifat asid.
pineapple/nanas
starfruit/belimbing
bitter gourd/peria
- 4. Multiple Choice
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
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
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
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
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
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
Predict the taste for the powder formed.
Ramalkan rasa bagi serbuk yang terbentuk.
sweet/manis
sour/masam
salty/masin
bitter/pahit
- 11. Multiple Choice
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
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
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
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
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
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
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
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
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
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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