1) The melting point is the temperature in which a material changes state from solid to a liquid and the Boiling point is the temperature in which a material change state from liquid to gas. If the water boiling point is 100ºC and melting point is 0°C. What is the state of water at 80ºC? a) Solid b) Liquid c) Gas 2) The melting point is the temperature in which a material changes state from solid to a liquid and the boiling point is the temperature in which a material changes state from liquid to gas. If the water boiling point is 100ºC and melting point is 0°C. What is the state of matter of water at -10ºC? a) Solid b) Liquid c) Gas 3) The melting point is the temperature in which a material changes state from solid to a liquid and the boiling point is the temperature in which a material changes state from liquid to gas. If the water boiling point is 100ºC and melting point is 0°C. What is the state of matter of water at 120ºC? a) Solid b) Liquid c) Gas 4) The freezing point is the temperature in which a material changes state from liquid to solid. According to the table which of the following can be the freezing point of this substance? a) 30°C b) 50°C c) 100°C d) 150°C 5) The condensation is a material changes state from gas to liquid. According to the table which of the following temperatures this substance condanses? a) 30°C b) 50°C c) 100°C d) 150°C 6) In the diagram below, where do you place the following terms: melting, freezing, boiling, and condensation? a) 1 - melting; 2 - freezing; 3 - boiling; 4 - condensation; b) 1 - freezing; 2 - melting; 3 - condensation; 4 - boiling; c) 1 - boiling; 2 - condensation; 3 - melting; 4 - freezing; d) 1 - condensation; 2 - boiling; 3 - freezing; 4 - melting; 7) According to the particle theory of matter solids particles have less space between them than liquids and gases particles and gases particles have more space between them than solid and liquid particles. Which image show the particles of oxygen in gas state? a) Image 1 b) Image 2 c) Image 3

Change of State

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