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Chemistry Vocabulary Review   27pts Name_________________________Period__________
compound that contains carbon, excluding carbonates and oxides
When molecules are moving form greater to lesser concentration in an attempt to reach a balanced state or in terms or chemical reactions
subatomic particle with no charge and a mass about equal to a proton and found in the nucleus
a measure of the force exerted by a gas above a liquid in a sealed container
is a substance of two or more different atoms bonded together, which can be broken down into elements.
Have full valence shells and are inert. The last group on the right of the periodic table.
matter that has the same composition and properties throughout
React with acids to neutralize their properties.
Have a sour taste React with bases to neutralize their properties
one reactant that is broken down into two or more simpler products. Heat is often used to drive this type of reaction.
a liquid substance capable of dissolving other substances
change of matter from a gas to a liquid state
a substance that has mass and occupies space.
is a chemical reaction whereby an acid and a base react to form a salt.
atoms of the same element with the same atomic number but with different numbers of neutrons
number of protons and neutrons (nucleons) in the nucleus of an atom
the ability of one substance to dissolve in another at a given temperature and pressure
A table that shows the elements, their atomic number, symbol, and average atomic mass; elements with similar chemical properties are grouped together.
process that leads to the transformation of one set of chemical substances to another.
describes a reaction that absorbs energy from the surroundings, its products contain more energy than its reactants.
organic molecule composed of only carbon and hydrogen atoms
is equal to the number of protons found in the nucleus.
scale a range of numbers used to describe how acidic or basic a solution is; ranges from 0 (most acidic) to 14 (most basic)
A substance that initiates or accelerates a chemical reaction, by lowering the activation energy needed.
atom that has a positive or negative charge
a chemical substance that is present at the start of a chemical reaction
a subatomic particle that has a positive charge and that is found in the nucleus of an atom
Smallest unit of an element that still retains the properties.