science 20
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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| electron | a negativley charged particle located in the region surrounding the nucleus of an atom
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| energy level | a specific region surrounding the nucleus that is available for electrons
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| atomic number | the number of protons in the nucleus of an atom
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| neutron | a neutral particle located in the nucleus of the atom
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| mass number | the total number of protons and neutrons in an atom
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| valence electron | an electron that occupies the outermost energy level in an atom
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| proton | a positivley charged particle located in the nucleus of an atom
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| cation | a postivley charged ion
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| atomic mass | the average mass of the atoms of an element including all isotopes
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| element | a pure substance which cannot be broken down into simpler substances by chemical means
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| anion | a negativley charged ion
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| atom | the smallest part of an elemnt that has all the properties of that element
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| non metal | an element that is not flexible does not conduct electricity and tends to form negative ions
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| ionic bond | a bond formed by the simultaneous attraction between positive and negative ions
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| molecular compound | a pure substance formed from non metals
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| metal | a malleable and ductile element that has lustre has good heat and electrical conductivity and tends to form positive ions
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| molecule | a particle containing a fixed number of covalently bonded non metals
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| ionic compound | a pure substance formed from a metal and a non metal
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| covalent bond | a bond formed by the simultaneous attraction of two nuclei for a shared pair of electrons
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| compound | a pure substance formed from atoms of two or more elements with different atoms joined in fixed ratios
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| solute | a substance that dissolves
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| exothermic change | a chemical change in which energy usually in the form of heat is released into the surroundings
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| non electrolyte | a solute in a solution that does not conduct electricity
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| solvent | a substance in a solution that breaks down the bond of a solute
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| solution | a homogeneous mixture of dissolved substances that contains a solute and a solvent
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| chemical change | a change in which one or more new substances with different prperties are formed
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| dissociation | the seperation of an ionic compound into individual ions in a solution
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| endothermic change | a chemical change in which energy is absorbed from the surroundings
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| aqueous solution | a solution in which water is the solvent
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| electrolyte | a solute that forms a solution that conducts electricity
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| standard solution | a solution having a precisley known concentration
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| mole | a specific amount of a substancethat consists of 6.022 times 10 to the power of 23
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| acid | a substance taht produces hydrogen ions when dissolved in water to form a conducting aqueous solution
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| molar concentration | the amount of solute in moles per litre of solution
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| molar mass | that mass of one of the mole of a substance
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
tessahughes
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