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Year 10 - Chemistry

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Across
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The smallest particle of a chemical element that can exist.
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Group 1 of the periodic table, including Lithium, Sodium and Potassium: _______ Metals
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Heavy, neutrally charged fundamental particle
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An equation showing a chemical reaction with the reactants and products written out (two words, 4,8)
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A substance that has only one type of atom or molecule
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The three types of particle that make an atom: _______ Particles
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Very light, negatively charged subatomic particle
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The substances made in a chemical reaction
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A force holding atoms together.
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A description of a molecule showing the different atoms in that molecule, the chemical ________
Down
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Heavy, positively charged subatomic particle
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A substance of two (or more) atoms or molecules that are not joined chemically
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Defined region of an atom that can hold a certain number of electrons
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Number that tells how many protons an atom has, the ______ Number
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An electron in the outermost orbital of an atom.
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A substance containing just one kind of atom.
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A substance which is made up of two or more different elements, chemically bonded together.
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The substance used up in a chemical reaction
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Group 17 of the Periodic Table, including Fluorine, Chlorine and Bromine
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A pair or group of atoms bonded together.