--kemia Word Scramble
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Question | Answer |
Exothermic | Reactions, where bonds in the products are stronger than bonds in the reactants-> energy (heat) is given out-> HOT! |
Endothermic | reactions, where bonds in the reactants are stronger than bonds in the products. Energy (heat) is absorbed from the surroundings,->COLD! |
Chemical kinetics | Study of the factors affecting the rate of chemical reaction |
Rate of a chemical reaction | increase in the concentration of one of the products per unit time (dm^3/mol/s) |
When atom reaches the octet, it achieves.... | ....gas configuration |
Ionic compound | electrons are transferred from one atom to another to to form ions with complete outer shell |
Ion | An atom/molecule when its total number of electrons is not the same with protons |
Isotopes | Same elements, same number of protons, different numbers of neutrons |
Ionic compound | positive and negative ions are attracted to each other by STRONG ELECTROSTATIC FORCES |
Cation | positively charged ions |
Anion | negatively charged ions |
Ionic compounds have | high melting points high attraction (requires lot of energy to separate them) high boiling points good conductors of electricity most are soluble with water |
The overall cahrge of a compound? | Zero |
Elctronegativity | The a relative measure of an atom's ability to attract electrons to itself |
Noble gases have reached.. | .. the octet |
Covalent bonding | sharing of one or more electron pairs so that each atom in the molecule achieves an inert gas configuration (octet) |
Covalent compounds have | low melting points low boiling points can be gas, liquid or solid poor conductors of electricity most are not soluble with water |
Created by:
blueberrykh
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