1 霹雳怡保培南独立中学 SM POI LAM (SUWA) IPOH SECOND MONTHLY TEST 2021 GENERAL SCIENCE Date: 04.08.2021 Time: 1405 – 1535 (1 hour 30 minutes) NAME：_______________________ REG NO: ______________ CLASS: J1 YI / ZI Section A: Multiple Choice Questions (40m) There are 20 questions in this section. Answer all the questions in this section. For each question there are four possible answers A, B, C and D. Choose the correct answer and record your choice in the O sheet provided. 1. Matter can exist in solid, liquid and ____________ state. A. slime C. dust B. gaseous D. cells 2. How is the force of attraction between particles in solid? A. Very strong C. Weak B. Moderate D. Very weak This paper consists of 11 printed pages. Prepared by： ………Nithiya……… (MS. NITHIYAKAMALAM) Checked by： ……………… (MR. LOKE WAI CHUAN)
2 3. The diagram below shows the particles in a grape juice. Choose the correct statement for the diagram above. A. Shape follows the container C. Can be compressed B. Particles are arranged closely in order D. Have the weakest attraction force 4. What is meant by meniscus? A. The temperature of liquid B. The volume of liquid C. The curve formed by liquid inside the measuring cylinder D. The density of liquid 5. Which process occurs when solid changes to gas without going through liquid state? A. Melting C. Evaporation B. Boiling D. Sublimation 6. During cooling processes, heat will be ___________________ from matter and the state of matter will change from gas to liquid and finally into solid. A. absorbed C. soaked up B. released D. occupied 7. Which of the following is a magnetic metal? A. Carbon C. Bronze B. Steel D. Silver
3 8. The diagram below shows attractive shiny jewellery preferred by ladies. Which metal below would be best suited to make this jewellery? A. Zinc C. Gold B. Copper D. Aluminium 9. Which of the following are not the properties of metal? I. Metals are strong and tough II. Metals are ductile III. They shatter easily IV. Do not conduct heat energy well A. I, II C. I, III B. II, III D. III, IV 10. Why copper is so useful? A. because can use for electrical wiring B. because they are magnetic C. because they are widely used to build strong bridges D. because they are added to rubber to make it hard 11. Which of the following properties can be found in ceramics? I. Not hard II. Used for car windows III. Can be brittle IV. Can withstand high pressure A. I and II C. III and IV B. II and III D. I and IV
4 12. Which of the following is an example of alloy? A. Copper C. Bronze B. Gold D. Carbon 13. What gas can be found in the diagram below? A. Chlorine C. Argon B. Oxygen D. Helium 14. The diagram below shows Nitric acid with its hazardous sign. What is the meaning of this sign? A. Corrosive C. Corona B. Irritant D. Touchable 15. Potassium Hydroxide is an alkali which is used to produce ________________ A. liquid soap C. cooking oil B. baking powder D. coconut milkshake
5 16. Which food below contains citric acid? A. Rice C. Fish B. Green tea D. Orange 17. Which pigment in plants and berries gives the rich colouring to make an indicator? A. Carotenes C. Chlorophyll B. Red blood cells D. Anthocyanin 18. The table below shows the type of substances with their respective colour of Universal Indicator. Which of the following is not the correct matching? Types of substances Colour of UI A. Strongly acidic Red B. Weakly acidic Yellow C. Weakly alkaline Green D Strongly alkaline Purple 19. If a solution has a pH of 1, it is called as a _____________. A. weak acid C. weak alkaline B. strong acid D. strong alkaline 20. Which apparatus is used to deliver known volumes of acid to neutralise alkali solution in the flask? A. Burette C. Funnel B. Thermometer D. Bunsen burner
6 Section B: Structured Questions (40m) Answer all the questions in the space provided on the Question Paper 1. All physical objects are matter. Matter occupies space and has mass. (a) State the force of attraction between particles in solid, liquid and gas. {3m} Solid: _________________________________________________________________________ Liquid: _______________________________________________________________________ Gas: __________________________________________________________________________ (b) Which two processes require heat to change from one state to another? {2m} ______________________________________________________________________________ 2. Identify the differences between boiling and evaporation by underlining the correct answers. {6m} Boiling Evaporation First Difference Takes place only on the surface of liquid / Takes place throughout the liquid Takes place only on the surface of liquid / Takes place throughout the liquid Second Difference Rapid process / Slow process Rapid process / Slow process Third Difference No bubbles formed / Bubbles are formed No bubbles formed / Bubbles are formed 3. State one property of metal with an example and one property of non-metal with an example. {4m} _________________________________________________________________________________ _________________________________________________________________________________
7 4. The diagram below shows two types of solutions with their respective pH values. Diagram 1 (a) State the type of solutions X and Y and write down the colour of them if tested with Universal Indicator (UI). {4m} Solution X: ______________________________________________________________________ Solution Y: ______________________________________________________________________ (b) Solution X and solution Y can cancel each other out. What is this process called? {2m} ________________________________________________________________________________ (c) What is the general word equation of acid-base reaction? {2m} ________________________________________________________________________________ (d) What are the products of the process you mentioned at 4(b)? {2m} ________________________________________________________________________________ (e) What colour does a litmus paper show if we put it inside an alkali solution? {1m} ________________________________________________________________________________ (f) Why Universal Indicator is better than litmus paper in determining the acidity and alkalinity of a substance? {2m} _________________________________________________________________________________ _________________________________________________________________________________
8 5. Explain what happen at the top and bottom of the test tube in rainbow neutralisation by filling up the empty spaces. {6m} At the top • The acid turns Universal Indicator into red which makes it strongly ______________. • The acid particles move _______________ the test tube and mix with more water • UI turns _______________ and makes the solution weakly acidic At the bottom • The washing soda dissolved in the ___________________. • Universal Indicator is ______________ in colour, making the washing soda to be strong alkali. • The particles of washing soda move _______________ the test tube and mix with more water. Universal Indicator turns light blue, making the solution weakly alkaline. 6. Neutralisation happens even in our daily life. Based on the given situations below, explain how these conditions happen and how they can be treated by filling up the empty spaces. i) Discomfort feeling in the stomach {3m} Our stomach produces ______________________ acid to digest food. But too much hydrochloric acid can cause ________________________. So the intake of medicines called ___________________ which is alkaline, can help to neutralise the acid. ii) Acidic condition in the mouth {3m} There are millions of ______________________ in our mouth & they feed on the food pieces left on your teeth and produces acid. This acid can damage our teeth and make them __________________. So we use _____________________ which contains alkali to neutralise the acid.
9 Section C: Free Response Questions (20m) Answer all the questions in the space provided on the Question Paper 1. Fadzil runs a small food business near his Taman. He supplies the food orders to customers using plastics boxes. Diagram 1 (a) What makes Fadzil to use plastic material instead of other materials? Explain the advantages of using plastic boxes as food containers based on their properties. {5m} _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ _______________________________________________________________________________ (b) State two usages of plastics other than food containers. {2m} _______________________________________________________________________________ _______________________________________________________________________________
10 2. Mark is working at a Chemistry lab for the past one year. He mostly handles all the chemical solutions such as acid and alkali in the lab. Diagram 2 (a) What are the four safety steps have to be followed by Mark when he handles those chemicals? {4m} ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ ________________________________________________________________________________ (b) What are names of the three acids that could be easily found in chemistry lab? {3m} ________________________________________________________________________________ (c) Just name one of the hazardous warning labels found on acid bottles {1m} ________________________________________________________________________________
11 3. Aliza was given an experiment by her Science teacher to collect a sample of soil to test for its pH level. Rearrange the given steps below in the correct order to be followed by Aliza to carry out her experiment. {5m} 1.Add few drops of UI to the filtrate 2. Shake the tube nicely 3. Take a sample of the soil in a test tube and add some water. 4. Record your result 5. Filter the mixture in the tube. 1.________________________________________________________________________________ 2.________________________________________________________________________________ 3.________________________________________________________________________________ 4.________________________________________________________________________________ 5.________________________________________________________________________________
