Questions on Chemical Properties
Multiple-Choice Questions – Chemical Properties
1. Which of the following is a chemical property of a substance?
A) Color
B) Melting point
C) Reactivity with oxygen
D) Density
E) Boiling point
2. What does the chemical property “flammability” refer to?
A) Ability to dissolve in water
B) Ability to react with oxygen and burn
C) Ability to conduct electricity
D) Ability to change state
E) Ability to melt
3. Which property describes how a substance reacts with acids?
A) Chemical property
B) Physical property
C) Extensive property
D) Intensive property
E) Mechanical property
4. The ability of iron to rust when exposed to air and moisture is an example of:
A) Physical change
B) Chemical property
C) Physical property
D) Extensive property
E) Intensive property
5. Which of these is NOT a chemical property?
A) Toxicity
B) Reactivity
C) Hardness
D) Combustibility
E) Corrosiveness
6. What chemical property is demonstrated when a substance reacts with water to form a gas?
A) Melting point
B) Reactivity with water
C) Solubility
D) Density
E) Conductivity
7. Which of the following is a chemical property related to food?
A) Sweetness
B) pH level
C) Boiling point
D) Reactivity with air
E) Texture
8. The ability of a substance to undergo a chemical change and form new substances is called:
A) Physical property
B) Chemical property
C) Intensive property
D) Extensive property
E) Mechanical property
9. Which chemical property determines if a substance is an acid or base?
A) pH
B) Color
C) Density
D) Melting point
E) Viscosity
10. When hydrogen gas reacts explosively with oxygen, the chemical property shown is:
A) Flammability
B) Boiling point
C) Solubility
D) Conductivity
E) Malleability
11. Corrosion resistance is an example of which type of chemical property?
A) Reactivity
B) Toxicity
C) Stability
D) Combustibility
E) Flammability
12. Which chemical property involves the ability to produce heat and light when reacting with oxygen?
A) Flammability
B) Reactivity with acids
C) Melting point
D) Boiling point
E) Solubility
13. What does the chemical property “toxicity” describe?
A) How harmful a substance is to living organisms
B) How easily a substance melts
C) How soluble a substance is in water
D) How hard a substance is
E) How shiny a substance appears
14. The ability of a substance to react with nitrogen is an example of:
A) Chemical property
B) Physical property
C) Extensive property
D) Intensive property
E) Physical change
15. Which of the following is a chemical property observed when food spoils?
A) Change in color
B) Chemical reactivity
C) Boiling point
D) Texture
E) Density
16. Reactivity with halogens is a:
A) Physical property
B) Chemical property
C) Intensive property
D) Extensive property
E) Mechanical property
17. What chemical property does the process of combustion primarily illustrate?
A) Flammability
B) Boiling point
C) Solubility
D) Density
E) Color
18. The chemical property that determines how easily a metal can be hammered into sheets is called:
A) Malleability (physical)
B) Ductility (physical)
C) Reactivity (chemical)
D) Flammability
E) Corrosiveness
19. Which chemical property is important in determining whether a substance can be used as a fuel?
A) Flammability
B) Solubility
C) Color
D) Density
E) Melting point
20. Which chemical property explains why silver tarnishes when exposed to sulfur compounds?
A) Reactivity
B) Flammability
C) Boiling point
D) Toxicity
E) Malleability
- Questions on Chemical Reactions
- Questions on Chemical Change
- Questions on Chemical Symbols and Formulas
Answer Key with Explanations
1. C) Reactivity with oxygen is a chemical property.
2. B) Flammability is the ability to react with oxygen and burn.
3. A) Reactivity with acids is a chemical property.
4. B) Rusting shows iron’s chemical property (reactivity with moisture and air).
5. C) Hardness is a physical property, not chemical.
6. B) Reactivity with water causing gas formation is a chemical property.
7. D) Reactivity with air is a chemical property related to food spoilage.
8. B) Ability to undergo chemical change = chemical property.
9. A) pH determines acidic or basic nature.
10. A) Flammability shown in explosive reaction.
11. C) Stability is resistance to corrosion (chemical property).
12. A) Flammability involves producing heat and light during reaction.
13. A) Toxicity is how harmful a substance is chemically.
14. A) Reacting with nitrogen is a chemical property.
15. B) Chemical reactivity causes food spoilage.
16. B) Reactivity with halogens is a chemical property.
17. A) Combustion illustrates flammability.
18. C) Reactivity is chemical; malleability and ductility are physical.
19. A) Flammability determines fuel usability.
20. A) Tarnishing is due to silver’s reactivity with sulfur compounds.
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