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16 Cards in this Set
- Front
- Back
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Matter
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anything that takes up space or has mass
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Forms of matter
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elements, compounds, and mixtures
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4 states of matter
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solid, liquid, gass, and plasma
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Elements
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cannot be broken down into simpler forms
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How many elements are there?
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90 elements occur naturally while the remaining 24 are created i the lab- 114 total
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atom
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building block of all matter- its possible to have a single atom of an element
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molecule
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neutral particle formed when atoms share eletrons
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atom structure
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atoms are made of three different particles
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proton
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positively charged-form nucleus
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neutron
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has no charge, found in the nucleus
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proton
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formed in the nucleus- positively charged
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electron
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negatively charged- found in the rings/shells that circle the nucleus
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compound
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pure substance that contains two or more elements that are chemically bonded
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mixture
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two or more substances physically bonded
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chemical formulas
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shows the elements in a compound
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subscript
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a small number found to the bottom right of an element's symbol. if there is one one element, no subscript is necessary
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