Physical and Chemical Properties

Front

Oil and water separating into layers is an example of –

Back

The physical property of density

Answer explanation

Oil and water separate due to their different densities, a physical property. Density determines how substances interact and layer, making 'the physical property of density' the correct choice.

Front

Which of the following is NOT a chemical property? Solubility, Reactivity, The ability to rust, Flammability

Back

Solubility

Answer explanation

Solubility is a physical property, as it describes how a substance dissolves in a solvent. In contrast, reactivity, the ability to rust, and flammability are all chemical properties, indicating how substances interact or change chemically.

Front

Which of the following is a chemical property?

• State of matter
• Color
• Density
• Flammability

Back

Flammability

Answer explanation

Flammability is a chemical property because it describes a substance's ability to undergo a chemical change when exposed to fire. In contrast, state of matter, color, and density are physical properties.

Front

Which of the following shows evidence of a chemical reaction?

• Water turns red when mixed with Kool-Aid.
• An iron nail turns red in the presence of oxygen.
• An ice cube turns to a liquid in the presence of heat.
• Paper changes its shape when cut.

Back

An iron nail turns red in the presence of oxygen.

Answer explanation

An iron nail turning red in the presence of oxygen indicates rusting, a chemical reaction where iron reacts with oxygen to form iron oxide. The other options describe physical changes, not chemical reactions.

Front

Chemical properties

Back

Characteristics that can only be observed or measured when atoms of matter rearrange during a chemical change

Answer explanation

Chemical properties are characteristics observed during a chemical change, such as reactivity or flammability, which occur when atoms rearrange. The correct choice highlights this aspect, distinguishing it from physical properties.

Front

Large quantities

Back

Bulk quantities

Answer explanation

The term 'large quantities' is best described by 'bulk quantities', which refers to large amounts of material. The other options do not specifically relate to the concept of quantity.

Front

Physical properties

Back

Characteristics that can be observed or measured without changing the substance, such as color, melting point, or conductivity

Answer explanation

The correct choice describes physical properties as characteristics observable without altering the substance, like color and melting point, distinguishing them from chemical properties that require a change in composition.

Front

Mass and volume of four mystery liquids are provided. Which liquid is it? Options: W, X, Y, Z.

Back

W

Answer explanation

The correct choice is W because it has the highest density calculated from the mass and volume data provided. This indicates that W is likely the liquid with the most mass per unit volume.

Front

Order the liquids in a glass jar from top to bottom.

Back

Liquid C, Liquid A, Liquid B

Answer explanation

The correct order is determined by the densities of the liquids. Liquid C is the least dense, so it floats on top. Liquid A is denser than C but less dense than B, placing it in the middle. Liquid B, being the densest, settles at the bottom.

Front

Accurate headings for each column? Options: Column A = Physical Properties; Column B = Chemical Properties, Column A = Chemical Properties; Column B = Physical Properties, Column A = Observable Properties; Column B = Non-Observable Properties, Column A = Non-Observable Properties; Column B = Observable Properties

Back

Column A = Physical Properties; Column B = Chemical Properties

Answer explanation

The correct choice is 'Column A = Physical Properties; Column B = Chemical Properties' because physical properties can be observed without changing the substance, while chemical properties describe how a substance reacts, which is not observable without a reaction.