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Descripción
| Pregunta | Respuesta |
| ..., mass, volume and weight | MATTER: anything that has mass and takes up space MASS: the amount of matter in a object VOLUME: the amount of space an object has WEIGHT: gravitational force apply to an object |
| DIFFERENCE between mass, volume, weight, and... | matter is mass and volume. volume is the amount of space. mass is the amount of matter, is measured in a balance, graduated in kg. weight is the gravitational force on an object, depends on position, is measured with a dynamometer, depens on gravity and graduated in Newtons. |
| properties of matter: extensive and intensive | EXTENSIVE: depends on the amount of matter in a sample -mass, volume, weight INTENSIVE: depends on the type of matter -density, reactivity |
| Physical properties | characteristic that we can observe without changing its identity. EXAMPLES: color, shape, texture, size, odor, shine, hardness, volume, weight, density, boiling point, freezing point, temperature, codensation point, malleability, ductility, solubility, state, conductor of heat or electricity, magnetic attraction, streak... |
| Chemical Properties | ability of a substance to react with other that has different characteristics EXAMPLES: reactivity: ability to react flammability: ability to burn |
| Physical Change | changes that affect physical properties, without changing its identity. |
| Chemical Change | process in which substances change into a new one. EXAMPLES OF CHEMICAL CHANGES: change in color, in odor, in shape, in temperature, formation of precipitate, and of bubbles. |
| States of matter: solid, liquid, | SOLID: definite volume and shape, particles vibrate in there place and very close each other LIQUID: definite volume, take shape's container and particles can slip one another |
| States of matter: gas and plasma | GAS: particles move very fast, ocuppies more volume, expands to fill the container and take its shape PLASMA: intermolecular forces are created by ionic attractions, is ionized gas at high temperature, has free electrons, and is present is Plasma TV, fluoresents and stars |
| Changes of state | melting: solid to liquid evaporation: liquid to gas condensation: gas to liquid frizzing: liquid to solid deposition: gas to solid sublimation: solid to gas dionization: plasma to gas ionization: gas to plasma |
| classification of matter | PURE SUBSTANCES: substance with definite physical and chemical properties, consist on a single element or compound -elements:made of only one kind of atom -compounds: made up of different kinds of atoms chemically combined MIXTURES: variety of elements and compounds that aren´t chemically combined |
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