Vocabulary Science 8: Matter & Chemical Properties
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Atom | basic building block of matter and consists of 3 basic particles (protons, neutrons, electrons)
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| Elements | pure substances that cannot be changed into simpler substances and are composed of one kind of atom
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| Compounds | pure substances that are composed of two or more types of elements that are chemically combined and can only be changed into elements through chemical changes
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| Mixtures | two or more substances physically combined; easy to separate.
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| Heterogeneous mixtures | are not uniform and the component substances can be visibly distinguished
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| Homogeneous mixtures | are uniform throughout and the substances are evenly mixed and cannot be visibly distinguished.
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| Conductivity | The ability of a substance to move electrons
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| Reactivity | The potential for 2 or more atoms to chemically combine
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| Metals | are conductors that are strong, shiny, hard and malleable.
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| Nonmetals | are gasses or solids and are not good conductors. They are brittle.
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| Metalloids | An element that has properties of both metals and nonmetals
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| Period Table | An arrangement of the elements according to properties and structure
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| Solubility | The ability of a substance to be dissolved into another substance
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| Density | Mass per unit volume; crowdedness; d= m/v;
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| melting point | The temperature when a solid changes to a liquid
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| boiling point | The temperature when a liquid changes to a gas
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| Law of Conservation of Mass | matter cannot be created nor destroyed
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