Matter: Anything that takes up space and has mass
Mass: The amount of matter in an object
States of matter- matter can be classified by its state: solids, liquids and gases
Solids – matter that has its own shape
Liquids – matter that takes the shape of its container
Gases- matter that spreads to fill a space
Dissolve- to move particles of a solid througout a liquid to form a solution
Evaporate- to change from a liquid to a gas
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property – a property is something about an object that you can observe with your senses.
hardness- a measure of how resistant a material is to scratching, bending, or denting.
magnetism – a force between magnets and objects magnets attract.
electrical conductivity - a measure of how well electricity can move through a material.
electrical conductor - a material through which electrical energy can flow easily.
electrical insulator – a material that slows or stops the flow of electricity.
thermal energy- the energy of heat.
thermal conductor – a material that heats up quickly.
thermal insulator – a material that hears up slowly.
solution – a mixture of matter dissolved in a liquid.
solubility – the ability of matter to dissolve in a liquid.
melting point – at its melting point, frozen water will change into a liquid. The melting point of water is warmer than 0° C or 32° F.
boiling point – At its boiling point, water begins to change from a liquid to a gas. The boiling point of water is 100° C or 212°F.
physical changes – a change in the state of matter in which the material is still the same type of material with the same properties as the original.
conservation of matter – a principal that states that the amount of matter does not increase or decrease after a reaction or change of state
condensation- the change from a gas to a liquid
condense – means to change from a gas to a liquid
mixture-- two or more kinds of matter put together
chemical change-a change in the state of matter in which the material becomes a different material with different properties than the original.
chemical reaction- the process by which a chemical change occurs