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Summary All definitions for chemistry Grade 11 and 12 (IEB)
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A simple document containing all the chemistry definitions that you will need to know for the IEB chemistry syllabus.
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Physics Definitions Flashcards (IEB)
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Some examples from this set of practice questions
1.
Define: vector quantity
Answer: A physical quantity that has both magnitude and direction.
2.
Define: scalar quantity
Answer: A physical quantity that has magnitude only.
3.
Define: resultant vector
Answer: A single vector which has the same effect as the original vectors acting together.
4.
Define: distance
Answer: The length of the path travelled (is a scalar).
5.
Define: displacement
Answer: A change in position (is a vector).
6.
Define: speed
Answer: The rate of change of distance (is a scalar).
7.
Define: velocity
Answer: The rate of change of position (is a vector). OR The rate of change of displacement (is a vector). OR The rate of displacement (is a vector).
8.
Define: acceleration
Answer: The rate of change of velocity (is a vector).
9.
Define: weight
Answer: The gravitational force the Earth exerts on any object on or near its surface.
10.
Define: normal force
Answer: The perpendicular force exerted by a surface on an object in contact with it.
Chemistry definitions flashcards (IEB)
Flashcards
54 Flashcards
$2.83
0 sales
Flashcards
54 Flashcards
$2.83
0 sales
Some examples from this set of practice questions
1.
Define: molar mass
Answer: The mass in grams of one mole of that substance.
2.
Define: solution
Answer: A homogenous mixture of solute and solvent.
3.
Define: solute
Answer: The substance that is dissolved in the solution.
4.
Define: solvent
Answer: The substance in which another substance is dissolved, forming a solution.
5.
Define: concentration
Answer: The amount of solute per unit volume of solution.
6.
Define: yield
Answer: A measure of the extent of a reaction, generally measured by comparing the amount of product against the amount of product that is possible.
7.
Define: intramolecular bond
Answer: A bond which occurs between atoms within molecules.
8.
Define: covalent bond
Answer: A sharing of at least one pair of electrons by two non-metal atoms.
9.
Define: non-polar / pure covalent bond
Answer: An equal sharing of electrons.
10.
Define: polar covalent bond
Answer: Unequal sharing of electrons leading to a dipole forming (due to difference in electronegativity).
Content preview
Chemistry definitions (IEB)Quantitative chemistry
Molar mass: the mass in grams of one mole of that substance.
Solution: a homogenous mixture of solute and solvent.
Solute: the substance that is dissolved in the solution.
Solvent: the substance in which another substance is dissolved, forming
a solution.
Concentration: the amount of solute per unit volume of solution.
Yield: a measure of the extent of a reaction, generally measured by
comparing the amount of product against the amount of product
that is possible.
Chemical bonding
Intramolecular a bond which occurs between atoms within molecules.
bond:
Covalent bond: a sharing of at least one pair of electrons by two non-metal
atoms.
Non-polar (pure) an equal sharing of electrons.
covalent bond:
Polar covalent: unequal sharing of electrons leading to a dipole forming.
Electronegativity: a measure of the tendency of an atom to attract a bonding pair
of electrons.
Ionic bond: a transfer of electrons and subsequent electrostatic attraction.
Metallic bonding: a bond between a positive kernel and a sea of delocalised
electrons.
Intermolecular a weak force of attraction between molecules, ions, or atoms of
forces: noble gases.
Rates of reactions / energy change
Heat of a reaction: the net change of chemical potential energy of the system.
Exothermic reactions which transform chemical potential energy into thermal
reactions: energy.
Endothermic reactions which transform thermal energy into chemical
reactions: potential energy.
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