atoms and matter
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is an atom | a small particle that is the building block of matter
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| what happens when atoms combine | they form the different types of matter (by bonding)
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| what is an element | a substance made of only one kind of atom
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| what is a compound | two + elements that are chemically joined
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| anything that has ______ and takes up space | mass
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| most of _____ | elements
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| two classifications: ____ and ____ | compounds, elements
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| two types of molecules: ____ and ____ | substances, elements
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| what is made of only one type of atom, organized on the periodic table, and have a chemical symbol | element
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| what is made of two or more types of atoms bonded together, properties are different from the elements that make it up, and have chemical formulas | compound
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| what is made of two or more substances that are not bonded together, combinations of substances can vary, and there are two types of them | mixture
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| what has two or more substances unevenly mixed and have different substances visible by unaided eye or microscope | heterogeneous mixture
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| what has two or more substances evenly mixed and have different substances that cannot be seen by a microscope | homogeneous mixture
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| something that has lost or gained electrons | ion
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| ions have a negative____ | charge
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| atoms have a central region called _____ | nucleus
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| atoms have a region surrounding the central area called an ____ | electron cloud
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| an electron cloud contains____ | electrons
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| the nucleus contains particles called ____ and _____ | protons and neutrons
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| an isotope has the same number of these compared with other atoms of the same element | proton
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| an isotope has a different number of these compared with other atoms of the same element | neutron
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| the nucleus of an atom contains _____ and neutrons | protons
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| the nucleus has a _________ and the ________ of an atom | positively charged, most mass
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| an electron is a _____ particle located outside the nucleus | negatively charged
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| the modern model of an atom is called the _____ model | electron-cloud
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| electrons that are close to the nucleus have ______ than electrons that are farther from the nucleus | less energy
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| the atomic number is the number of ______ in the nucleus of an atom of an element | protons
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| isotope have the same number of protons but different numbers of _____ | neutrons
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| an ion has a charge because it has gained or lost _____ | electrons
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| a _______ ion has more protons than electrons | positive
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| adding a ______ to a neutral atom produces a new element | proton
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