Chp. 1 Vocabulary Definitions

Heterogeneous

• Composed of dissimilar components.

• Uniform in composition and structure.

• Consisting of identical parts.

• Homogeneous in nature.

Atom

• The smallest unit of an element that maintains chemical properties of that element.

• A particle that is larger than a molecule.

• A type of chemical bond between two elements.

• A collection of molecules that form a compound.

Homogeneous

• Describes something that has a uniform structure or composition throughout.

• Describes something that is composed of different elements or parts.

• Describes a mixture that can be easily separated into its components.

• Describes a process that involves change and transformation.

Physical Change

• Change of matter from one form to another without a change in chemical properties.

• A process that alters the chemical composition of a substance.

• A reaction that produces a new substance with different properties.

• A change that occurs only at the molecular level.

Chemical Property

• A property of matter that describes a substance's ability to participate in chemical reactions.

• A characteristic that can be observed without changing the substance's chemical identity.

• A measure of how much matter is in an object.

• A property that describes the physical state of a substance.

Extensive Property

• A property that depends on the size or extent of a system.

• A property that remains constant regardless of the amount of substance present.

• A property that can be measured without changing the system's state.

• A property that is independent of the system's size or extent.

Physical Property

• A characteristic of a substance that involves a chemical change.

• A characteristic of a substance that does not involve a chemical change, such as density, color, or hardness.

• A property that can only be observed under extreme conditions.

• A characteristic that defines the chemical reactivity of a substance.

Mass

• A measure of the amount of matter in an object.

• A measure of the weight of an object.

• A measure of the volume of an object.

• A measure of the density of an object.

Matter

• Anything that has mass and takes up space.

• A substance that can be seen but not touched.

• A form of energy that cannot be measured.

• A type of chemical reaction that occurs in solids.

Change of State

• The change of a substance from one physical state to the next.

• The process of heating a substance to increase its temperature.

• The transformation of a solid into a liquid without changing its temperature.

• The mixing of two substances to create a new compound.