1 What is the process of changing from a liquid to a solid called? A Melting B Freezing C Evaporation D Sublimation
2 What is the force of attraction between particles in a liquid? A Very strong B Moderate C Very weak D No force
3 What is diffusion? A The movement of particles from high concentration to low concentration B The movement of particles from low concentration to high concentration C The settling of particles D The expansion of matter
6 Which of the following properties is true for solids? A They have low density B They are compressible C They have high density and are incompressible D They flow easily
9 What is the process of changing from a gas to a liquid called? A Evaporation B Condensation C Sublimation D Deposition
10 What is the force of attraction between particles in a solid? A Very strong B Moderate C Very weak D No force
11 Which of the following properties is true for gases? A They have high density B They are incompressible C They have low density and are compressible D They have a fixed shape
12 What is the name of the temperature at which a liquid freezes? A Boiling point B Freezing point C Melting point D Condensation point
13 What is the movement of particles in a gas? A Particles vibrate around fixed positions B Particles slide past each other C Particles move freely and randomly D Particles are packed tightly
15 What is the movement of particles in a solid? A Particles vibrate around fixed positions B Particles move freely C Particles move rapidly and randomly D Particles do not move at all
16 What happens to the particles when a solid is heated? A They stop moving B They vibrate faster C They move slower D They become tightly packed
17 In which state of matter are particles packed closely together in an orderly arrangement? A Solid B Liquid C Gas D Plasma
18 What is the term for the ability of matter to flow? A Density B Fluidity C Viscosity D Compressibility
20 What happens to the temperature during a phase change? A It increases B It decreases C It remains constant D It fluctuates
21 What is the process of changing directly from a solid to a gas called? A Sublimation B Deposition C Melting D Evaporation
22 What is the term for the conversion of a liquid to a gas at the surface? A Boiling B Evaporation C Condensation D Sublimation
25 What is the name of the temperature at which a liquid boils? A Boiling point B Freezing point C Melting point D Sublimation point