Spring Review 2025

Front

Fill in the blank: ______ is anything that has mass and takes up space (volume).

Back

Matter

Front

A ______ is matter with a uniform and definite composition. It can be an element or a compound. (e.g., pure water, gold).

Back

Substance

Front

A ______ property is a characteristic of a substance that can be observed or measured without changing the substance's chemical composition.

Back

Physical

Front

A ______ property is a characteristic of a substance that describes its ability to undergo a specific chemical change. (e.g., flammability, reactivity with acid).

Back

Chemical

Front

An ______ is the smallest unit of an element that retains the chemical identity of that element. It's the fundamental building block of matter.

Back

Atom

Front

An ______ is a pure substance that cannot be broken down into simpler substances by chemical means. It consists of only one type of atom (e.g., oxygen (O), gold (Au)).

Back

Element

Front

A ______ is a particle made up of two or more atoms held together by chemical bonds. These atoms can be of the same element (e.g., O2) or different elements (e.g., H2O).

Back

Molecule

Front

A ______ is a substance made up of two or more different elements chemically combined in a fixed ratio. Compounds have properties different from the elements that make them up (e.g., water (H2O), salt (NaCl)).

Back

Compound

Front

A ______ is a combination of two or more substances that are physically combined but not chemically bonded. The composition of a mixture can vary (e.g., saltwater, air).

Back

Mixture

Front

Fill in the blank: ______ is a measure of the amount of matter in an object. It remains constant regardless of location.

Back

Mass