Science 7 Segment 1 Lesson 1 Vocabulary Test Retake

The basic unit from which all matter is made up.

• Atom

• Compound

• Element

• Chemical Property

A characteristic of a pure substance that can be observed without changing into another substance.

• Atom

• Compound

• Element

• Physical Property

A substance made of two or more elements chemically combined in a specific ratio or proportion.

• Atom

• Compound

• Element

• Chemical Property

A pure substance that cannot be broken down into other substances.

• Atom

• Compound

• Element

• Chemical Property

A characteristic of a substance that describes its ability to change into different substances.

• Atom

• Compound

• Element

• Chemical Property

Atoms are composed of the following three subatomic particles: photons, neutrons, and electrons.

• True

• False

Oxygen, O2 (gas), is considered a compound.

• True

• False

Table salt, sodium chloride (NaCl), is an example of a substance.

• True

• False

State the definition for the term molecule.

• A molecule is a group of two or more atoms held together by chemical bonds.
• A molecule is a single atom that forms the basic unit of a chemical element.
• A molecule is a type of particle found in the atomic nucleus.

State the definition for the term matter.

• Matter is anything that has mass and takes up space.
• Matter is a type of energy that is not visible to the naked eye.
• Matter is the term used to describe the process of evaporation.
• Matter is the scientific term for the study of plants.