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- 1. Multiple Choice
Which of the following is NOT a property of matter?
It occupies space.
It has mass.
It can exist in different states.
It can be seen only with a microscope.
- 2. Multiple Choice
What is the physical state of water at 100°C?
Solid
Liquid
Gas
Plasma
- 3. Multiple Choice
Which of the following processes involves a change from the gaseous state to the liquid state?
Evaporation
Condensation
Sublimation
Melting
- 4. Multiple Choice
The temperature at which a solid changes into a liquid is called:
Melting point
Boiling point
Freezing point
Sublimation point
- 5. Multiple Choice
What happens to the temperature of a substance during a phase change?
It increases
It decreases
It remains constant
It fluctuates
- 6. Multiple Choice
Which state of matter has a definite volume but no definite shape?
Solid
Liquid
Gas
Plasma
- 7. Multiple Choice
Which of the following states of matter can flow?
Solid and Liquid
Liquid and Gas
Solid and Gas
Only Liquid
- 8. Multiple Choice
Sublimation is the process where a:
Solid changes directly to a gas
Solid changes to a liquid
Liquid changes to a gas
Gas changes to a solid
- 9. Multiple Choice
Which of the following increases the rate of evaporation?
Decrease in surface area
Decrease in temperature
Increase in humidity
Increase in surface area
- 10. Multiple Choice
The boiling point of water at sea level is:
0°C
50°C
100°C
150°C
- 11. Multiple Choice
Which of the following states of matter has the highest kinetic energy?
Solid
Liquid
Gas
Plasma
- 12. Multiple Choice
During evaporation, the temperature of the remaining liquid:
Increases
Decreases
Remains constant
First decreases, then increases
- 13. Multiple Choice
The process of changing a solid directly to a gas without passing through the liquid state is called:
Melting
Condensation
Sublimation
Freezing
- 14. Multiple Choice
Which of the following factors does NOT affect the rate of evaporation?
Temperature
Surface area
Wind speed
Volume of the liquid
- 15. Multiple Choice
What happens to the boiling point of water as atmospheric pressure increases?
It increases
It decreases
It remains the same
It fluctuates
- 16. Multiple Choice
Which of the following describes a gas?
Definite shape and definite volume
Definite shape but no definite volume
No definite shape but definite volume
No definite shape and no definite volume
- 17. Multiple Choice
What is the process of changing liquid to gas called?
Melting
Freezing
Evaporation
Condensation
- 18. Multiple Choice
The particles in a solid are:
Closely packed and can only vibrate in fixed positions
Closely packed and can move freely
Loosely packed and can move freely
Loosely packed and can only vibrate in fixed positions
- 19. Multiple Choice
Which of the following is an example of sublimation?
Melting of ice
Boiling of water
Dry ice turning into carbon dioxide gas
Freezing of water
- 20. Multiple Choice
What happens to the particles of a substance when it changes from solid to liquid?
They move closer together
They move farther apart
They stop moving
They stay in a fixed position
- 21. Multiple Choice
Which of the following best explains why liquids flow?
The particles are tightly packed.
The particles are loosely packed.
The particles can slide past one another.
The particles are in fixed positions.
- 22. Multiple Choice
Which state of matter has the least kinetic energy?
Solid
Liquid
Gas
Plasma
- 23. Multiple Choice
Which of the following statements about gases is true?
They have a definite shape and volume.
They have a definite volume but no definite shape.
They have no definite shape or volume.
They have a definite shape but no definite volume.
- 24. Multiple Choice
What is the process of a gas changing directly into a solid called?
Melting
Freezing
Sublimation
Deposition
- 25. Multiple Choice
What happens to the pressure inside a container if the number of gas particles is increased?
It decreases
It increases
It remains constant
It fluctuates
- 26. Multiple Choice
Which of the following is an example of a physical change?
Burning of paper
Rusting of iron
Melting of ice
Digestion of food
- 27. Multiple Choice
Which of the following statements about the melting point is correct?
It is the same as the freezing point.
It is lower than the freezing point.
It is higher than the freezing point.
It is not related to the freezing point.
- 28. Multiple Choice
The process of turning liquid into a solid is called:
Melting
Boiling
Freezing
Condensation
- 29. Multiple Choice
Which of the following is an example of condensation?
Dew forming on grass
Ice melting
Water boiling
Clothes drying in the sun
- 30. Multiple Choice
What is the main factor that determines the state of matter of a substance?
Volume
Mass
Temperature
Color
- 31. Multiple Choice
Which of the following will increase the rate of condensation?
Increasing the temperature
Decreasing the temperature
Increasing the surface area
Increasing the wind speed
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