Chemistry note cards for HESI entrance exam
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
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| Matter that has a definite shape and volume | show 🗑
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| Matter that changes in volume with changes in temperature and pressure | show 🗑
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| A ____________ change of matter is when no change is made tot he chemical composition of a substance. | show 🗑
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| show | element
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| Law that states matter can neither be created nor destroyed during a chemical reaction | show 🗑
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| show | Chemical reaction
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| 5 main chemical reactions | show 🗑
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| show | synthesis
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| show | decomposition
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| The chemical reaction that is the reaction of a compound with oxygen | show 🗑
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| show | single replacement
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| Chemical reaction involving 2 ionic compounds; the reactant yields "switched partners" | show 🗑
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| how elements are arranged on the periodic table | show 🗑
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| show | atomic number
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| average of the masses of each of its isotopes as they occur in nature | show 🗑
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| Mass number - atomic number = ____________ | show 🗑
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| Columns of the periodic table = ________ | show 🗑
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| Rows of the periodic table = ___________ | show 🗑
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| show | +1
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| Group IIA = ______ charge | show 🗑
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| Group IIIA = ______ charge | show 🗑
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| Group VA = ______ charge | show 🗑
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| show | -2
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| Group VIIA = ______ charge | show 🗑
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| Charge of noble gases | show 🗑
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| show | protons
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| show | electrons
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| show | neutrons
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| show | atomic number
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| show | mass number
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| In ________ reactions, atoms try to reach stable electron configurations. | show 🗑
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| ___________ reactions take place in the nucleus, to obtain stable nuclear configurations. | show 🗑
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| show | radioactivity
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| show | radiation
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| 3 types of radiation | show 🗑
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| Radiation that is the emission of helium ions | show 🗑
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| show | +2
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| show | piece of paper
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| show | beta radiation
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| How can beta radiation particles be stopped? | show 🗑
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| _______ radiation is high-energy electromagnetic radiation that lacks charge and mass. | show 🗑
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| show | gamma radiation
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| show | ionic & covalent
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| show | ionic
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| A single ______ bond is formed when 2 atoms share a pair of electrons. | show 🗑
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| A ________ bond is formed when 2 electron pairs are shared. | show 🗑
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| A _______ bond is formed when 3 electron pairs are shared. | show 🗑
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| What is the strongest type of chemical bond? What is it formed by? | show 🗑
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| show | non-polar
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| show | polar
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| _________ is based on the difference in electronegativity values for the elements involved | show 🗑
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| show | intermolecular forces
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| show | hydrogen bond
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| show | hydrogen
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| Bond that is the strongest of the intermolecular forces | show 🗑
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| show | dipole interactions
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| show | dipole
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| A dipole attraction is a _________ intermolecular force. | show 🗑
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| The weakest of all intermolecular forces. | show 🗑
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| Dispersion forces are typically found in ___________ covalent compounds. | show 🗑
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| show | mole
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| The mass of one mole of a substance | show 🗑
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| The part of chemistry that deals with the quantities and numeric relationships between compounds in a chemical reaction. | show 🗑
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| show | coefficient
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| 4 ways to increase the reaction rate | show 🗑
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| Increasing the ___________ causes the particles to have greater kinetic energy, allowing them to move faster and have a greater chance | show 🗑
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| Accelerates a reaction by reducing the activation energy, or the amount of energy needed for a reaction to occur. | show 🗑
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| ________ reaction involve the transfer of electrons from one element to another | show 🗑
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| show | oxidation
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| The gain of electrons | show 🗑
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| show | The charge on polyatomic ions
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| show | acids
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| Compounds acting a hydrogen-ion acceptors | show 🗑
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| show | acids
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| show | bases
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| What characterizes a chemical reaction as combustion? | show 🗑
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| What is the change of potassium in KCl? | show 🗑
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| show | 10 (it has an atomic # of 8 and is in group VIA, which has a -2 charge, which means it has 2 more electrons thant he 8 protons).
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| show | 8 (take the mass #-atomic # = neutrons) 14-6=8
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| What is the strongest type of chemical bond? | show 🗑
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| What is the mass of one mole of CO2? | show 🗑
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| show | 1.204 x 10^24 ( 1 mole - 6.02 x 10^23, 2 mole would be double that)
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| What would be the oxidation state of the sulfur atom in sulfuric acid, H2SO4? | show 🗑
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