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Some intensive properies can be determined by simple observations: color (absorption spectrum), melting point, density, solubility, acidic or alkaline nature, and density are common examples. Even more fundamental, but less directly observable, is chemical composition.
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BASIC DEFINITIONS AND VOCABULARY ON STRUCTURE OF MATTER Chemistry: The study of matter, its composition and properties, and the changes it undergoes. Matter: Anything that has rest mass. To develop this topic we need to define the atom, the basic unit of common matter.
Nov 13, 2022 · Matter is “anything that has mass and occupies space”. Matter is what chemical substances are composed of. But what do we mean by chemical substances? How do we organize our view of …
GCSE Chemistry Key Words Non-metals: Elements that react to form negative ions. Found towards the right and top of the periodic table. Particle theory: The theory which models the three states of matter by representing the particles as small solid spheres. Particle theory can help to explain melting, boiling, freezing and condensing.
- A classification scheme for matter
- Mass:
- Accuracy & Precision:
FIGURE 1-4 Every sample of matter is either a single substance (an element or compound) or a mixture of substances. At the molecular level, an element consists of atoms of a single type and a compound consists of two or more different types of atoms, usually joined into molecules. In a homogeneous mixture, atoms or molecules are randomly mixed at t...
Mass is the quantity of matter in an object. Weight is the force of gravity on an object
Accuracy: is the closeness of a measured value Xi to the true or accepted value Xt Precision: Reproducibility of a measurement. Reproducibility
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Matter: Matter is any substance which has mass and occupies space. All physical objects are composed of matter, in the form of atoms and molecules, which are in turn composed of protons, neutrons, and electrons. Energy: Comes in different forms - heat (thermal), light (radiant), mechanical, electrical, chemical, and nuclear energy.
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Introduction. Matter has three possible states: Solid Liquid. 3. Gas. In this lecture we will investigate the differences in the physical properties exhibited by each of these states. We will work to gain understanding of the forces and interactions between molecules that determine these states.
