click below
click below
Normal Size Small Size show me how
7th grade Science
Chemistry Ch 1 MATTER
| Term | Definition |
|---|---|
| Molecular Model | a scale model showing the arrangement of atoms in a molecule |
| Molecules | the smallest possible amount of a particular substance that has all the characteristics of that substance |
| Atoms | the smallest particle of a substance that can exist by itself or be combined with other atoms to form a molecule |
| Observation | a statement about something you have noticed |
| Qualitative | observations that you see and describe |
| Quantitative | observations that have numerical information |
| Matter | the substance of which a physical object is composed; material substance that occupies space, has mass, |
| Chemistry | a science that deals with the composition, structure, and properties of substances and with the changes that they go through |
| Volume | an amount of space as measured in cubic units |
| Thermometer | an instrument used for measuring temperature |
| Temperature | a measurement in degrees showing the heat of something |
| Solid | having no space inside |
| Liquid | flowing freely like water |
| Gas | a substance (such as oxygen or hydrogen) that is like air and has no fixed shape |
| Particle | any one of the very small parts of matter (such as a molecule, atom, or electron) |