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6.6A
Vocabulary for Sixth Grade Science 6A
| Term | Definition |
|---|---|
| Atom | the smallest particle of matter that has distinct physical and chemical properties; consists of a nucleus which contains protons and neutrons and an electron cloud which contains electrons |
| gas | the state of matter where particles are far apart and moving quickly, bouncing off each other and their container; have a specific mass but because the particles have so much energy, they expand to fill all available space |
| kinetic energy | the energy caused by the motion of objects or particles within a system |
| liquid | the state of matter that has a specific mass and volume; takes the shape of its container; particles are loosely arranged, flow around, and bounce off each other |
| matter | substance that occupies space, has mass, and is composed of microscopic particles |
| molecule | a group of atoms that are chemically bonded to each other |
| property | characteristic of matter that can be used to identify particular materials |
| solid | the state of matter that has a specific mass and volume; maintains its shape; particles are packed together tightly, vibrating in place |
| structure | something arranged in a definite pattern of organization; the arrangement of particles or parts in a substance or body; the aggregate of elements of an entity in their relationships to each other |
| volume | the amount of space that a substance or object occupies and is measured in cubic units such as liters; may be measured mathematically or by displacement |