NATURAL SCIENCE GRADE 3
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Unit 7 » Matter “
En esta unidad conoceremos :• Las propiedades, los estados y los cambios de la materia. • Los materiales naturales y su origen. • Los materiales artificiales y su fabricación. En esta ficha se recoge el vocabulario y las estructuras que el alumnado debe aprender junto con unos enlaces de vídeos que serán de utilidad para repasar los contenidos estudiados.
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VOCABULARY
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English
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Español
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Space
Matter
Made up
Substance
Properties
Mass
Kilograms
Measured
Volume
Occupies
Litres
Lustre
Hardness
Fixed shape
Fixed volume
physical changes
Size
Chemical changes
mixture
combustion
Ashes
Carbon dioxide
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Espacio
Material
Hecho de
Sustancia
Propiedades
Masa
Kilos
Medido
Volumen
Ocupa
litros
brillo
dureza
forma fija
volumen fijo
cambios físicos
tamaño
cambios químicos
mezcla
combustión
cenizas
dióxido de carbono
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STRUCTURES
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• Everything around us that takes up space is made up of matter.
• There are different types of matter. Each type of matte is a substance. All objects have two properties: * MASS is the amount of matter in an object. It is measured in kilograms.
• * VOLUME is the amount of space an object occupies. It is measured in litres.
• Matter exists in three states: solid, liquid and gas. Solids have fixed shape and fixed volume. Liquids have fixed volume but their shape can change. Gases do not have a fixed shape nor a fixed volume.
• Physical changes: matter changes size and shape but the substance stays the same.
• Chemical changes: the substance is transformed into another different substance.
• MELTING: a solid is heated and changes into a liquid.
• EVAPORATION: a liquid is heated and changes into a gas.
• CONDESATION: a gas cools and changes into a liquid.
• SOLIDIFICATION: a liquid is cooled and changes into a solid.
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LINKS
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