Molecules, atoms, and chemical equations
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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| Law of Conservation of Mass | A law that states that mass can neither created nor destroyed
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| Physical Change | A change that affects the form of a chemical substance but doesn't change the chemical composition for that substance
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| Chemical Change | A change that occurs when a certain substance is formed into an another substance by a chemical reaction
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| Element | The chemically simplest substance that cannot be broken down any further
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| Chemical Formula | A way of expressing information about the atoms that constitute a particular chemical compound
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| Element (Diatomic) Molecule | Molecules composed only of two atoms, of either the same or different chemical elements
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| Compound Molecule | Group of two or more elements that are bonded together
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| Chemical Equation | A symbolic representation of a chemical reaction where the reactant entities are given on the left hand side and the product entities on the right hand side
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| Chemical Reaction | A process that leads to the transformation of one set of chemical substances to another
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| Reactants | Substances such as compounds and elements that are combined to create a product
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| Products | The result of substances changing into different substances
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| Coefficient | A numerical measure of a physical or chemical property that is constant for a system under specified conditions
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| Subscript | Placed to the lower right of the element's symbol, this shows the number of atoms of an element in a molecule
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