Question

physical and chemical properties
physical properties are observable and can be determined without changing the object or substance. examples of physical properties include: color, shape, mass, length, density, specific heat, and odor.
chemical properties describe how a substance reacts with something else and are usually determined by observing reactions that change the object or substance. for example, the ability of iron to rust is a chemical property and is observed by seeing how iron reacts with oxygen after which the original iron metal is gone and replaced by iron oxide.
in the table below, classify the following properties and physical or chemical by placing an x in the appropriate box.
1 bitter taste
2 boiling point
3 can neutralize a base
4 density
5 flammability
6 hardness
7 luster
8 melting point
9 odor
10 reacts with a base to form water
11 reacts with acid to form hydrogen
12 reacts with water to form a gas
13 red color
14 solubility
15 supports combustion

Explanation:

1. Bitter taste is a physical property as it can be observed without changing the substance chemically.
2. Boiling point is a physical property, a characteristic that can be measured without altering the substance's chemical identity.
3. Ability to neutralize a base is a chemical property since it involves a chemical reaction.
4. Density is a physical property determined by mass and volume without chemical change.
5. Flammability is a chemical property as it involves a substance reacting with oxygen in a combustion - type reaction.
6. Hardness is a physical property, an observable characteristic of the substance.
7. Luster is a physical property, related to how a substance reflects light.
8. Melting point is a physical property, a temperature - related characteristic without chemical transformation.
9. Odor is a physical property, detectable without changing the substance chemically.
10. Reacting with a base to form water is a chemical property due to the chemical reaction involved.
11. Reacting with acid to form hydrogen is a chemical property as it is a chemical reaction.
12. Reacting with water to form a gas is a chemical property because it involves a chemical change.
13. Red color is a physical property, an observable characteristic.
14. Solubility is a physical property, related to the ability of a substance to dissolve without a chemical reaction.
15. Supporting combustion is a chemical property as it involves a chemical reaction with a combustible substance.

Answer:

1. Physical Property
2. Physical Property
3. Chemical Property
4. Physical Property
5. Chemical Property
6. Physical Property
7. Physical Property
8. Physical Property
9. Physical Property
10. Chemical Property
11. Chemical Property
12. Chemical Property
13. Physical Property
14. Physical Property
15. Chemical Property