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Chapter 2 Activity 1

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Leiyana Pereira

on 4 January 2013

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Transcript of Chapter 2 Activity 1

The Structure of Matter Leiyana Pereira,
Patrick Yeboah
Jennifer Marsocci Elements Chemical Formulas element- any material that cannot be broken down into simpler materials.
Chemistry is the properties of the elements,
how they combine, the properties of these combinations, and the energy changes that result fro, these combinations. Compound: a substance that consists of
two or more elements bonded together in definite proportion Many elements as single atoms in nature although 7 exist in diatomic form. When there has to be two atoms of this element is appear. elements are represented by symbols. Compounds electrolysis: the conduction of electricity through a solution or a molten substance that results in as chemical change. Compounds are represented by chemical formulas.
chemical formula: the combinations of the symbols of the elements in a definite proportion used to represent molecules, compounds, radicals You can write the equation of the electrolysis of water as: H2O(l)+energy->H2(g)+O2(g) (g): gaseous state
(l): liquid state Conservation of mass: states that matter can neither be destroyed or created in a chemical reaction. i.e Hydrogen: H
Oxygen: O
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