Physical Changes Of Matter Quiz

1. _______________ is the effect of a substance changing from a solid to a gas.

Sublimation is the process in which a substance transitions directly from a solid state to a gas state, bypassing the liquid state. This occurs when the substance is heated and the vapor pressure of the solid exceeds the atmospheric pressure. During sublimation, the particles of the substance gain enough energy to break the intermolecular forces holding them together in the solid state, resulting in the formation of a gas. This process is commonly observed in substances like dry ice (solid carbon dioxide) and mothballs (naphthalene).

Explanation

Sublimation is the process in which a substance transitions directly from a solid state to a gas state, bypassing the liquid state. This occurs when the substance is heated and the vapor pressure of the solid exceeds the atmospheric pressure. During sublimation, the particles of the substance gain enough energy to break the intermolecular forces holding them together in the solid state, resulting in the formation of a gas. This process is commonly observed in substances like dry ice (solid carbon dioxide) and mothballs (naphthalene).

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2. A physical change will:

Create a new substance.

Will have an energy transference.

Will use oxidation.

Will change the properties of the substance.

A physical change refers to a change in the form or state of matter without altering its chemical composition. In this case, the correct answer is "will have an energy transference." This is because during a physical change, energy is either absorbed or released, resulting in a transfer of energy. This can be observed, for example, when ice melts into water or when a solid is heated and turns into a gas. The change in energy is a characteristic of physical changes and is not directly related to the creation of a new substance, oxidation, or changing the properties of the substance.

Explanation

A physical change refers to a change in the form or state of matter without altering its chemical composition. In this case, the correct answer is "will have an energy transference." This is because during a physical change, energy is either absorbed or released, resulting in a transfer of energy. This can be observed, for example, when ice melts into water or when a solid is heated and turns into a gas. The change in energy is a characteristic of physical changes and is not directly related to the creation of a new substance, oxidation, or changing the properties of the substance.

3. Three substances that sublimate are: dry ice (solid carbon dioxide), __________, and naphthalene.

Sublimation is the process where a substance transitions directly from a solid to a gas without passing through the liquid phase. Dry ice (solid CO2), iodine, and naphthalene (commonly found in mothballs) are well-known examples of substances that undergo sublimation under certain conditions.

Explanation

Sublimation is the process where a substance transitions directly from a solid to a gas without passing through the liquid phase. Dry ice (solid CO2), iodine, and naphthalene (commonly found in mothballs) are well-known examples of substances that undergo sublimation under certain conditions.

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4. A chemical change will:

Will not have an energy transference.

Might use electrolysis.

Will create a new substance.

Will create a new compound.

A chemical change refers to a process where one or more substances are transformed into different substances with different properties. Electrolysis is a method that involves the use of an electric current to drive a non-spontaneous chemical reaction. It is commonly used to break down compounds into their constituent elements or ions. Therefore, it is possible for a chemical change to involve the use of electrolysis as a means to create new substances or compounds.

Explanation

A chemical change refers to a process where one or more substances are transformed into different substances with different properties. Electrolysis is a method that involves the use of an electric current to drive a non-spontaneous chemical reaction. It is commonly used to break down compounds into their constituent elements or ions. Therefore, it is possible for a chemical change to involve the use of electrolysis as a means to create new substances or compounds.