Question

1. physical properties of matter include all of the following except.

a. its length
b. its color
c. its conductivity
d. its taste

1. the ability to be dissolved in water

a. solubility
b. density
c. matter
d. electrical energy

1. which of the following is a chemical property?

a. ability to react with oxygen
b. color
c. freezing point
d. hardness

1. in the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?

a. carbon dioxide
b. water
c. heat
d. sucrose

1. a phase change from a solid to gas is called

a. decomposition
b. transformation
c. sublimation
d. condensation

Explanation:

Question 32

Physical properties are characteristics that can be observed or measured without changing the substance's chemical identity. Length, color, and conductivity are physical properties. Taste involves chemical interactions with taste receptors (a chemical change - related perception), so it's not a physical property.

Solubility is defined as the ability of a substance to dissolve in a solvent (like water). Density is mass per unit volume, matter is the substance itself, and electrical energy is a form of energy, not related to dissolving.

Chemical properties describe a substance's ability to undergo chemical changes (reactions). Reacting with oxygen is a chemical reaction (e.g., oxidation), while color, freezing point, and hardness are physical properties (observable/measurable without chemical change).

Answer:

d. It's taste

Question 33