What to create	Exam
Which subject	Chemistry
What age group	Year or Grade 9
What topic	nature of matter
Question types	Close-ended
Number of questions	20
Number of answers	4
Correct answers	Exactly 1
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Chemistry Quiz: The Nature of Matter

Instructions

Please answer the following questions by selecting the correct letter corresponding to your answer. Each question has one correct answer.

Questions

1. What is the smallest unit of an element that retains the properties of that element?

   • A. Molecule
   • B. Atom
   • C. Compound
   • D. Ion

2. Which of the following states of matter has a definite shape and volume?

   • A. Gas
   • B. Liquid
   • C. Solid
   • D. Plasma

3. What term describes a substance made up of two or more different types of atoms chemically bonded together?

   • A. Element
   • B. Atom
   • C. Compound
   • D. Mixture

4. Which of the following is a physical property of matter?

   • A. Flammability
   • B. Reactivity
   • C. Melting point
   • D. Corrosiveness

5. What happens to the molecules in a solid when it is heated?

   • A. They vibrate faster
   • B. They lose all motion
   • C. They spread out completely
   • D. They remain stationary

6. What term is used to describe a change in a substance that does not affect its chemical composition?

   • A. Chemical change
   • B. Physical change
   • C. Nuclear change
   • D. Ionization

7. Which of the following best describes a gas?

   • A. Definite shape and definite volume
   • B. Definite shape but not definite volume
   • C. Not definite shape but definite volume
   • D. Not definite shape and not definite volume

8. Which of these categories does water (H2O) belong to?

   • A. Mixture
   • B. Element
   • C. Compound
   • D. Solution

9. What type of change is rust forming on iron?

   • A. Physical change
   • B. Chemical change
   • C. Nuclear change
   • D. Mechanical change

10. Which particle carries a negative charge?

    • A. Proton
    • B. Neutron
    • C. Electron
    • D. Nucleus

11. What is the term for a homogeneous mixture where one substance is dissolved in another?

    • A. Suspension
    • B. Solution
    • C. Colloid
    • D. Compound

12. Which of the following is NOT a characteristic of metals?

    • A. Good conductors of heat
    • B. Dull appearance
    • C. Malleable
    • D. Lustrous

13. What happens to the volume of gases when pressure is increased at constant temperature?

    • A. Volume increases
    • B. Volume decreases
    • C. Volume remains the same
    • D. Volume becomes zero

14. Which of the following best describes an ion?

    • A. An atom with a neutral charge
    • B. An atom with a positive or negative charge
    • C. A molecule consisting of two atoms
    • D. A pure element

15. Which State of Matter has particles that are closely packed but can slide past each other?

    • A. Solid
    • B. Liquid
    • C. Gas
    • D. Plasma

16. Which type of change is the boiling of water?

    • A. Chemical change
    • B. Physical change
    • C. Biological change
    • D. Radiological change

17. What is an example of a chemical property?

    • A. Density
    • B. Color
    • C. Melting point
    • D. Reactivity with acid

18. Which of the following particles has no charge?

    • A. Proton
    • B. Electron
    • C. Neutron
    • D. Ion

19. In which state of matter do particles have the most energy?

    • A. Solid
    • B. Liquid
    • C. Gas
    • D. Plasma

20. Which term describes a mixture in which some of the particles settle out over time?

    • A. Colloid
    • B. Solution
    • C. Suspension
    • D. Compound

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Good luck!