Practice test

States of matter and its structure - Test Set 4

Review 17 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

17 questions

Questions and explanations

  1. Question 1

    Who proposed the atomic theory?
    1. Rutherford
    2. Bohr
    3. Dalton
    4. Lavoisier
    View explanation

    Sign In to See Explanations. Sign Up Here

  2. Question 2

    Boiling occurs when:
    1. Liquid → Gas
    2. Solid → Liquid
    3. Gas → Plasma
    4. Solid → Gas
    View explanation

    Sign In to See Explanations. Sign Up Here

  3. Question 3

    25°C = ___ Kelvin
    1. 248
    2. 298
    3. 273
    4. 300
    View explanation

    Sign In to See Explanations. Sign Up Here

  4. Question 4

    BEC occurs near:
    1. 0°C
    2. -273°C
    3. 100°C
    4. 500°C
    View explanation

    Sign In to See Explanations. Sign Up Here

  5. Question 5

    What happens to the particles of a substance when it is heated?
    1. They move slowly
    2. They become still
    3. They gain energy and move faster
    4. They lose mass
    View explanation

    Sign In to See Explanations. Sign Up Here

  6. Question 6

    Conversion of a solid directly into gas is known as:
    1. Condensation
    2. Evaporation
    3. Sublimation
    4. Melting
    View explanation

    Sign In to See Explanations. Sign Up Here

  7. Question 7

    Which process occurs when steam touches a cold surface?
    1. Evaporation
    2. Condensation
    3. Sublimation
    4. Melting
    View explanation

    Sign In to See Explanations. Sign Up Here

  8. Question 8

    Which one of the following is a heterogeneous mixture?
    1. Salt water
    2. Milk
    3. Air
    4. Soil
    View explanation

    Sign In to See Explanations. Sign Up Here

  9. Question 9

    Which one of the following is a compound?
    1. Bronze
    2. Water
    3. Iron
    4. Nitrogen
    View explanation

    Sign In to See Explanations. Sign Up Here

  10. Question 10

    Which of the following causes melting of a solid?
    1. Loss of energy
    2. Increase in intermolecular force
    3. Gain of heat energy
    4. None of these
    View explanation

    Sign In to See Explanations. Sign Up Here

  11. Question 11

    The term 'Interconversion of matter' refers to:
    1. Changing solid to gas only
    2. Changing states of matter due to energy change
    3. Breaking elements into compounds
    4. Permanent chemical changes
    View explanation

    Sign In to See Explanations. Sign Up Here

  12. Question 12

    Which of the following best describes an element?
    1. A pure substance made of only one kind of atom
    2. A combination of compounds
    3. A homogeneous mixture
    4. A heterogeneous mixture
    View explanation

    Sign In to See Explanations. Sign Up Here

  13. Question 13

    Which of the following changes involves both latent heat and temperature rise?
    1. Melting
    2. Boiling
    3. Heating water from 30°C to 100°C
    4. Freezing
    View explanation

    Sign In to See Explanations. Sign Up Here

  14. Question 14

    Which of these will diffuse fastest?
    1. Oxygen
    2. Hydrogen
    3. Carbon dioxide
    4. Nitrogen
    View explanation

    Sign In to See Explanations. Sign Up Here

  15. Question 15

    Which among the following is NOT a characteristic of a compound?
    1. Fixed melting point
    2. Components retain original properties
    3. Chemically combined elements
    4. Fixed composition
    View explanation

    Sign In to See Explanations. Sign Up Here

  16. Question 16

    Plasma state is commonly found in:
    1. Earth’s crust
    2. Oceans
    3. Sun and stars
    4. Atmosphere
    View explanation

    Sign In to See Explanations. Sign Up Here

  17. Question 17

    The reason for a gas to fill its container completely is:
    1. Low kinetic energy
    2. Weak force of attraction between particles
    3. Strong gravitational force
    4. High mass of particles
    View explanation

    Sign In to See Explanations. Sign Up Here