TNTET Paper 2 - Chemistry fundamentals: matter states mixtures and chemical changes. Online Test (MCQ Quiz)

1. What is the basic unit of matter?

A) Molecule B) Atom C) Ion D) Compound

2. Which of the following is NOT a state of matter?

A) Solid B) Liquid C) Gas D) Plasma

3. In which state of matter do particles have the least kinetic energy?

A) Solid B) Liquid C) Gas D) Plasma

4. Which state of matter has a definite shape and a definite volume?

A) Solid B) Liquid C) Gas D) Plasma

5. Liquids have a definite volume but do not have a definite shape. Which property explains this behavior?

A) High inter-particle forces B) Low inter-particle forces C) Particles are far apart D) Particles vibrate in fixed positions

6. Gases have neither a definite shape nor a definite volume. This is due to:

A) Strong inter-particle attraction B) Particles being closely packed C) Very weak inter-particle forces D) Fixed positions of particles

7. The process of a solid directly converting into a gas is called:

A) Melting B) Boiling C) Sublimation D) Condensation

8. Which process involves a gas changing into a liquid?

A) Evaporation B) Boiling C) Condensation D) Melting

9. What is the term for the change of state from liquid to gas?

A) Freezing B) Condensation C) Evaporation D) Sublimation

10. The change of state from liquid to solid is known as:

A) Melting B) Freezing C) Boiling D) Condensation

11. What is a substance that consists of two or more different elements chemically bonded together called?

A) Element B) Mixture C) Compound D) Molecule

12. Which of the following is an example of a compound?

A) Oxygen (O2) B) Salt (NaCl) C) Iron (Fe) D) Air

13. A substance composed of two or more elements that are NOT chemically bonded is called a:

A) Compound B) Element C) Mixture D) Molecule

14. Which of the following is an example of a mixture?

A) Water (H2O) B) Carbon Dioxide (CO2) C) Air D) Sugar (C12H22O11)

15. In a mixture, the components:

A) Are chemically bonded B) Can be separated by chemical means C) Retain their individual properties D) Form a new substance with new properties

16. Which type of mixture has a uniform composition throughout?

A) Heterogeneous mixture B) Homogeneous mixture C) Suspension D) Colloid

17. Salt dissolved in water forms a:

A) Heterogeneous mixture B) Homogeneous mixture C) Suspension D) Colloid

18. Which type of mixture has a non-uniform composition, with visible different parts?

A) Homogeneous mixture B) Solution C) Heterogeneous mixture D) Compound

19. Sand mixed with water is an example of a:

A) Homogeneous mixture B) Solution C) Heterogeneous mixture D) Compound

20. Which separation technique is used to separate a soluble solid from an insoluble solid?

A) Filtration B) Evaporation C) Distillation D) Magnetism

21. To separate a soluble solid from a solvent, which technique is commonly used?

A) Filtration B) Evaporation C) Decantation D) Centrifugation

22. Which separation technique is used to separate two liquids with different boiling points?

A) Filtration B) Evaporation C) Distillation D) Chromatography

23. A change in which a substance is altered without changing its chemical composition is called a:

A) Chemical change B) Physical change C) Nuclear change D) Phase change

24. Which of the following is an example of a physical change?

A) Burning wood B) Rusting of iron C) Boiling water D) Baking a cake

25. A change in which a substance is converted into a new substance with different chemical properties is called a:

A) Physical change B) Chemical change C) Phase change D) Mechanical change

26. Which of the following is an example of a chemical change?

A) Melting ice B) Cutting paper C) Digesting food D) Dissolving sugar in water

27. Rusting of iron is a type of:

A) Physical change B) Chemical change C) Phase change D) Mechanical change

28. When wood burns, it produces ash and smoke. This is a:

A) Physical change B) Chemical change C) Phase change D) Nuclear change

29. Which of the following indicates that a chemical change has occurred?

A) Change in shape B) Change in size C) Production of gas or heat D) Change in state without new substance formation

30. The process of a liquid turning into a solid is called:

A) Vaporization B) Condensation C) Freezing D) Sublimation

31. Which state of matter is characterized by particles that are far apart and move randomly at high speeds?

A) Solid B) Liquid C) Gas D) Plasma

32. A solution is a type of:

A) Heterogeneous mixture B) Compound C) Element D) Homogeneous mixture

33. Which of the following is NOT a method for separating mixtures?

A) Filtration B) Distillation C) Chemical reaction D) Evaporation

34. The process of a solid turning directly into a gas is known as:

A) Melting B) Boiling C) Sublimation D) Condensation

35. Which of the following is a characteristic property of a chemical change?

A) Reversibility B) Formation of a new substance C) No change in mass D) Constant temperature

36. What is the term for the substance that dissolves in a solvent?

A) Solvent B) Solute C) Solution D) Mixture

37. In a homogeneous mixture, the components are:

A) Visibly distinguishable B) Chemically bonded C) Uniformly distributed D) Separated by chemical means

38. The change of state from gas to solid without passing through the liquid state is called:

A) Condensation B) Deposition C) Sublimation D) Evaporation

39. Which process involves the separation of particles based on their size using a porous barrier?

A) Evaporation B) Distillation C) Filtration D) Chromatography

40. A chemical change always involves:

A) A change in physical state B) A change in temperature only C) The formation of new chemical bonds D) The separation of components without reaction

41. Which of the following is an element?

A) Water (H2O) B) Carbon Dioxide (CO2) C) Hydrogen (H2) D) Salt (NaCl)

42. What is the term for matter that has a definite volume but takes the shape of its container?

A) Solid B) Liquid C) Gas D) Plasma

43. Which of the following is a heterogeneous mixture?

A) Saltwater B) Sugar dissolved in water C) Air D) Oil and vinegar dressing

44. The process of a liquid turning into a gas at any temperature is called:

A) Boiling B) Condensation C) Evaporation D) Sublimation

45. What is the primary characteristic of particles in a solid state?

A) They move freely past each other. B) They are far apart and move randomly. C) They vibrate about fixed positions. D) They are ionized and form a plasma.

46. Which of the following can be separated into simpler substances by chemical means?

A) An element B) A mixture C) A compound D) A noble gas

47. When ice melts into water, it is an example of a:

A) Chemical change B) Physical change C) Nuclear change D) Biological change

48. Which separation technique relies on the difference in volatility of components?

A) Filtration B) Centrifugation C) Distillation D) Magnetism

49. A substance that cannot be broken down into simpler substances by chemical means is called:

A) A compound B) A mixture C) An element D) A molecule

50. The process of a gas cooling and turning into a liquid is called:

A) Evaporation B) Boiling C) Sublimation D) Condensation

Chemistry fundamentals: matter states mixtures and chemical changes. - Online Test

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