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Chemistry

Published on Nov 18, 2015

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PRESENTATION OUTLINE

Conservation of mass



A principle in classical physics stating that the total mass of an isolated system is unchanged by interaction of its.

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Atom
The smallest particle of an element that has the same chemical properties.

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Element
A substance that cannot be broken down any further into anything simpler.

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Molecule
A group of tightly bonded atoms that acts like a single particle.

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Compound
A chemical combination of two or more elements.

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Physical change phase change: a change from one state (solid or liquid or gas) to another without a change in chemical composition

Chemical change. chemical process: (chemistry) any process determined by the atomic and molecular composition and structure of the substances involved