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11 Cards in this Set
- Front
- Back
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What is an element?
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A pure substance from the periodic table that can not be broken down.
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What is an example of an element?
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(K) Potasium
(O) Oxygen (H) Hydrogen (Na) Sodium (Cl) Chloride |
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What is a compound?
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Two or more elements that are chemically combined.
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What is an example of a compound?
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(NaCl) Sodium Chloride
(H2O) Water |
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What is the difference between an atom and a molecule?
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An atom is the smallest part of an element and combines to form molecules.
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What is an atom?
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Is the smallest particle of an element. One atom has protons neutrons and electrons.
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What is a molecule?
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is two or more atoms chemically combined... such as H2O
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What are the three major types of elements?
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metals, metaloids (semi-metal), non-metals
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What can we learn from each individual box on a periodic table?
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*atomic number = number of protons = number of electrons
*element symbol *element name |
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How can we identify elements in the periodic table?
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*properties of matter - density, boiling point, melting point, state of matter at room temperature (solid, liquid or gas)
*atomic mass *electrons in outer shell *reactivity *density *metal/nonmetal/metalloid |
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Name the items found on the inside of an element box
------------------------- 1 ~~~~~~~~~~~~~~~ 1.08 H Hyrogen -------------------------- |
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1 ~~~~~~~~~~~~~~~ 1.08 atomic number~~~~~atomic mass H symbol Hyrogen name -------------------------- |
