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HESI A2 CHEMISTRY EXAM STUDY GUIDE AND PRACTICE EXAM 2024/2025 | ACCURATE REAL EXAM QUESTIONS WITH VERIFIED ANSWERS | EXPERT VERIFIED FOR A GUARANTEED PASS | LATEST UPDATE$15.99
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HESI A2 CHEMISTRY EXAM STUDY GUIDE AND PRACTICE EXAM 2024/2025 | ACCURATE REAL EXAM QUESTIONS WITH VERIFIED ANSWERS | EXPERT VERIFIED FOR A GUARANTEED PASS | LATEST UPDATE
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Module
HESI FUNDAMENTAL
Institution
HESI FUNDAMENTAL
HESI A2 CHEMISTRY EXAM STUDY GUIDE AND
PRACTICE EXAM 2024/2025 | ACCURATE REAL
EXAM QUESTIONS WITH VERIFIED ANSWERS |
EXPERT VERIFIED FOR A GUARANTEED PASS |
LATEST UPDATE
HESI A2 CHEMISTRY EXAM STUDY GUIDE AND
PRACTICE EXAM 2024/2025 | ACCURATE REAL
EXAM QUESTIONS WITH VERIFIED ANSWERS |
EXPERT VERIFIED FOR A GUARANTEED PASS |
LATEST UPDATE
,Acid
a compound that is a hydrogen or proton donor. It is corrosive to metals, changes blue
litmus paper red, and becomes less acidic when mixed with bases
atom
the basic building block of a molecule that contains a nucleus and orbits
Brainpower
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atomic mass
the average mass of each of that element's isotopes
atomic number
the number of protons in the nucleus, and it defines an atom of a particular element
base
a hydrogen or proton acceptor and generally has a hydroxide (OH) group in the makeup
of the molecule. Bases are also called alkaline compounds and are substances that
denature proteins, making them feel very slick; they change red litmus paper blue and
become less basic when mixed with acids.
basic unit of measure
standard unit of a system by which a quantity is accounted for and expressed (grams,
liters, or meters)
, catalysts
substances that accelerate a reaction by reducing the activation energy or the amount
of energy necessary for a reaction to occur
Celsius
a temperature system used in most of the world and by the scientific community; It has
these characteristics:
zero degrees = freezing point of pure water at sea level
100 degrees = boiling point of pure water at sea level.
Most people have a body temperature of 37 degrees Celsius.
chemical equations
combination of elements or compounds called reactants responding to create a product
or end result. Equations are written in the following manner: reactants ---> products. The
arrow can go the other way or both ways
combustion
a self sustaining exothermic chemical reaction usually initiated by HEAT acting on
OXYGEN and a fuel compound such as hydrocarbons
compound
the combination of two or more elements or atoms
covalent bond
2 atoms share electrons, generally in pairs, one from each atom
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