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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) |