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23 Cards in this Set
- Front
- Back
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What is the smallest piece of an element ?
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AN ATOM
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An ion that is an atom that has ____ or ______ electrons.
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GAINED
LOST |
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Compounds are _____ but molecules are not always______.
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MOLECULES
COMPOUNDS |
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What is formed when an acid an a base neutrilize one another
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SALT
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What has a sour taste an acid, base or salt.
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ACID
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What helps digest food an acid, base or salt?
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ACID
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What lives a BITTER taste an acid, base or salt?
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BASE
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What is usually composed of a metal and a nonmetal?
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SALT
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What is slippery to the touch an acid, base or salt?
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BASE
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When molecules are made from two or more different elements, it is called a ____?
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COMPOUND
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The ATOMIC NUMBER is based on the number of _____ that an element has.
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PROTONS
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The Periodic Table has horizontal rows called ______?
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PERIODS
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Mendeleev did what?
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developed the periodic table
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Which scientist develped the simplified model of an atom?
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BOHR
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If a substance has only one kind of atom, it is considered an____?
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ELEMENT
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In the formula H2CO3, how many atoms of CARBON are there?
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Just one
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If you have a strong acid that can burn your skin, you will have a ______?
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CORROSIVE
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An indicator is what?
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A substance that changes color when exposed to acid or base sollutions.
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Know how to label a periodic cell with its what?
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atomic mass, atomic number, chemical symbol and element name
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What is the study of matter?
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CHEMISTRY
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If an element has 29 protons, how many electrons will it have?
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29 because in a normal atom ther are the same number of protons and electrons.
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Elements that posses similar characteristics and react similarly with other elements are called what?
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GROUPS
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When does ionic bonding occur?
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When a metal bonds with a non-metal
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