1. Which of the following is not a branch of the field of chemistry? A Inorganic chemistry B Physical chemistry C Material science D Biochemistry 2. Which of the following shows the correct sequence of scientific method of investigation? A Making inference making observation controlling variables identifying variable B Making observation making inferens identifying problem making hypothesis C Making conclusion writing report making observation making inferens D Controlling variables planning an experiment making hypothesis making inferens 3. Which of the following should be considered when handling corrosive chemicals? I Avoid contact with the chemicals II Use goggles III Use rubber gloves IV Use ears plug A I and II B I and III C II and IV D III and IV 4. Diagram 1 shows the symbol of chlorine atom.
Transcript
1. Which of the following is not a branch of the field of chemistry?A Inorganic chemistryB Physical chemistryC Material scienceD Biochemistry
2. Which of the following shows the correct sequence of scientific method of investigation?A Making inference making observation controlling variables identifying variable B Making observation making inferens identifying problem making hypothesis C Making conclusion writing report making observation making inferensD Controlling variables planning an experiment making hypothesis making inferens
3. Which of the following should be considered when handling corrosive chemicals?I Avoid contact with the chemicalsII Use gogglesIII Use rubber glovesIV Use ears plug
A I and IIB I and IIIC II and IVD III and IV
4. Diagram 1 shows the symbol of chlorine atom.
Diagram 1 Number 13 is refer to A nucleon number B proton number C number of neutron D total number of electron and proton
5. The proton number of atom J is 11 and the relative atomic mass is 23.
27 Cl13
Which statement is true about J? A The mass of 1 atom of J is 23 g B 11 g of J contains 6.02 x 1023 atoms C The molar mass of J is 23 g mol-1. D Atom J has 11 protons, 11 electrons and 23 neutrons
6. The melting point of substance Q is -72 °C and boiling point is -10 °C. What is substance Q?A Ethanol B Sulphur C Sulphur dioxideD Potassium dioxide
7. An enclosed cylinder is filled with helium atoms. Which diagram shows the arrangement of the helium atoms?
8. A sample of carbon dioxide gas is cooled. Which of the following is true about the velocity and the size of its particles?
9. Diagram 2 shows the change of state of matter.
Diagram 2
Which of the following is process X?
Velocity of the particles
Size of the particles
A Increases Decreases
B Increases No change
C Decreases Decreases
D Decreases No change
A Melting B Boiling C Freezing D Condensation
10. Which of the following substances contain molecules?A Zinc B Ethanol C Sodium chloride D Magnesium oxide
11. Diagram 3 shows a graph of temperature against time for the heating of substance X
Diagram 3
Which of the following is true about substance X at the sixth minute?
A All the molecules move freelyB Molecules are closely packed and atoms move freelyC Molecules and atoms move freelyD Some molecules are closely packed while some molecules move freely
12. Diagram 4 shows an experiment to study the particle theory of matter..
Diagram 4
After 30 minutes, the water turns purple. What is the process occur in the experiment shown in the diagram 4?
A Melting process B Freezing process C Diffusion process D Evaporation process
13. Which of the following scientists discovered proton?
A Neils BohrB J.J ThomsonC James ChadwickD Ernest Rutherford
14. Diagram 5 shows a model of an atom
Diagram 5Which of the following is true of the atomic model?
I Proposed by Neil Bohr II Was built based on the existence of the neutron III Shows that electrons move in shells around the nucleus IV Discovered through the bombardment experiment of alpha particles on gold foil A I and III only B II and IV only C I, II and III only D I,II,III and IV
15. Diagram 6 shows an electron arrangement of R2- ion.
Diagram 6
How many proton and electron does an atom of R contain?
Protons Electrons
A 8 6B 8 10C 10 10D 8 8
16. The information shows the subatomic particles of atom W
Which of the following diagrams shows an atom W?
17. Carbon-14 is an isotope of carbon. What is the use of carbon-14?
A Estimate the age of fossil and artifactsB Radiotherapy for the treatment of cancerC Regulate the heartbeat of patients with heart problems
D Destroy bacteria in food without changing the quality of food
18. Diagram 7 shows one fossil.
Diagram 7Which of the following isotopes is used to estimate the age fossil?
A Sodium-24 B Iodine-131C Cobalt-60 D Carbon-14
19. The proton number of sodium atom is 11 and its molar mass is 23gmol-1 . What is the relative atomic mass of sodium atom?
A 11 B 12 C 23 D 34
20. What is the relative molecular mass of hydrated magnesium sulphate, MgSO4.H2O ? ( Relative atomic mass : Mg=24, S=32, O, 16, H=1)
A 145 B 24 C 15 D 184
21. Diagram 8 shows three types of substances.
Which of the following is true about the substance in diagram 8?
I the number of particles in gas Z is 3 x 6.02 x 1023
II all the substances have only 6.02 x 1023 particles III the number of particles in liquid X less than in gas Z IV the number of particles in solid Y is two times greater than in liquid X
A I and II only B III and IV onlyC I,II and IV only D I,III and IV only
22. Which of the following gases contains 0.4 mol of atoms at room temperature and pressure? ( 1 mol of gas occupies the volume of 24 dm3 at room temperature and pressure)
A 4.8 dm3 He B 4.8 dm3 H2
C 4.8 dm3 SO2 D 4.8 dm3 CO2
23. Diagram 9 shows two types of gases filled in two balloons
Diagram 9
Which statement is correct about the number of particles in oxygen gas?(relative atomic mass: H=1, O=16)
A same as in hydrogen gasB more than in hydrogen gasC two times more than in hydrogenD 16 times more than in hydrogen gas
24. If the Avogadro number is represented by the letter x, what is the number of hydrogen particles, H2 with the molar volume 24 dm3 mol-1 at room temperature and pressure?
A x B 2x C x-2 D ½ x
25. The picture shows a show a water disposal site. The activity of microorganisms in the waste produces methane gas.
What is the mass of methane gas produced?(relative atomic mass: H=1 ,C=12: 1 mole of gas occupies 24dm 3 at room temperature and pressure)
A 12g B 16g C 21g D 27g
26. What is the meaning of empirical formula?
A formula that show the actual number of atoms of each element in the compoundB formula that shows the simplest ratio of atoms of each element in the compoundC formula that shows how the atoms of elements are bonded togetherD formula that shows the type of element in the compound
27. Which of the following is the empirical formula of C6H12O6?
A CHO B CH2OC C2H4O2 D C6H12O6
28. In an experiment, 24g of element X react 32g sulphur to form a compound. What is the empirical formula of that compound?(relative atomic mass ; X= 6, S=32)
A XS B X2S C X2S3 D X4S
29. Diagram 9 shows an experiment to determine the empirical formula for an iron oxide.
The experimental results are as follows:
Mass of an empty combustion tube =262.20 gMass of combustion tube + iron that is produced = 264.44g Mass of combustion tube + iron oxide =264.92 g
What is the empirical formula for this iron oxide? (relative atomic mass : Fe=56, O=16)
A FeO B Fe2O3 C Fe3O4 D Fe2O5
30. Diagram 10 shows the set up of apparatus to setermine the empirical formula fo the metal oxide.
Which of the following metals is the most suitable to be used in the diagram?
A Lead B Silver C Copper D Magnesium
31. The relative molecular mass of M2(SO4)3 is 342. What is the relative atomic mass of element M? ( Relative atomic mass : O=16, S =32)
A 27 B 54 C 118 D 123
32. Which of the following formula represent a compound containing three atoms?
A HNO3 B H2O C LiF D ZnSO4
33. Which of the following is a chemical formula of ammonium sulphate?
A NH4SO4 B (NH4)2SO4
C (NH3)2SO4 D (NH4)3(SO4)2
34. The formula of a substance is written as FeSO4. What is the name of the compound according to the IUPAC system?
A Iron sulphate B Iron (II) sulphateC Iron (III) sulphate D Iron (II) sulphite
35. The following equation represents a reaction.
What are the reactants in this equations?
A copper(II) nitrate and waterB copper(II) nitrate and nitric acidC copper(II) hydroxide and nitric acidD copper(II) hydroxide and copper(II) nitrate
36. The equation below represents a chemical reaction.
What are the values of x,y and z?
37. The following equation shows the reaction between iron and chlorine.
1.12 g of iron burns completely in chlorine. What is the mass of the product?(relative atomic mass: Cl 35.5, Fe=56)
A 0.38g B 3.25g C 4.88g D 6.50 g
38. Elements are arranged in the modern Periodic Table based on their
A atomic radius B nucleon numberC number of protons D number of neutrons
39. Atom of element X has a proton number of 13. Where is X located in the Periodic Table of Element?
40. Diagram 10 shows part of the Periodic Table of Elements
The proton number of X is
A seven less than that of ZB three less than that of ZC one less than that of YD sixteen less that of Y
41. Which of the following locations are correct of an element with a proton number of 7 in the Periodic Table of Elements?
I Period 2II Period 5III Group 15IV Group 2
A I and III only
B II and IV onlyC I and IV onlyD II and III only
42. The following statements refer to the contributions of a scientist in the development of the Periodic Table
Who was the scientist?
A Lothar MeyerB Henry MoseleyC John NewlandsD Dmitri Mendelev
43. Diagram 11 show an air balloon filled with gas X.
In which group is X located in the Periodic Table?
A Group 15 B Group 16C Group 17 D Group 18
44. Diagram 12 shows the reaction lithium with water.
Lithium reacts with water to produce solution that
A turns red litmus paper blueB turns blue litmus paper redC no visible change in the colour of the blue litmus paperD no visible change in the colour of the red litmus paper
45. An atom X requires one electron to form ion X-. what can be deduced about X ?
A it is a halogenB it is a noble gasC it is in Group 15 in the Periodic Table of ElementsD it is in Group 16 in the Periodic Table of Elements
46. Element X is placed on the right of element Y in the same Period of the Periodic Table. If the proton number of Y is 12, then the electron arrangement of X is
A 2.8.2B 2.8.6C 2.8.8.2D 2.8.8.6
47. The atomic size decreases across the Period 3 because the
A proton number increasesB nucleon number decreasesC number of neutrons increasesD number of shell occupies electron decreases
48. Aluminium oxide has both acidic and basic properties, therefore it is
A a base oxideB an acid oxideC a metalloid oxideD an amphoteric oxide
49. The diagram below shows the position of elements P,Q,R and S in the Periodic Table of Elements.
What characteristics of P,Q,R and S?
P Q R SA Metal Non-metal Inert gas Transition B Non-metal Inert gas Metal Transition C Metal Transition Non-metal Inert gasD Inert gas Non-metal Transition Metal
50. The following information shows the properties of element Q.
