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28 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Isotopes |
Atoms with the same number of protons but different numbers of neutrons which is why it differs in atomic mass but not in chemical qualities |
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Polyatomic Ion |
Has more than 1 element OR bonded set of two or more atoms |
Hydroxide ion (OH^-) |
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Atomic Mass |
Mass of an atom in an element, approximately equivalent to the number of protons and neutrons in the atom. |
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Define Reactivity |
Measure of how easily an element will combine with other elements to form compounds |
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Define the term element |
A substance that can't be broken down by any chemical reactions and has the same kind of atoms |
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Define the term boiling point |
The point of temperature which a substance vaporizes |
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Define the term ionisation energy |
The minimum energy required to remove a loosely bound electron in an atom... Ionisation energy increases from left to right in the PT. |
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Name the groups in the periodic table |
Group 1 - Alkali metals Group 2 - Alkali earth metals Group 17 - Halogens Group 18 - noble gases |
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Define the term atomic number |
Atomic number is the number of protons and neutrons in an atom |
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Define the term molar mass/mole of a substance |
The mass in grams of one mole of a compound, a mole of any substance is measured by avogrado's constant which is 6.022 × 10 ^23 |
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Define precipitate |
In an aqueous solution precipitation is the process of transforming a dissolved substance to a insoluble solid - it also proves that chemical reaction took place and is a bi-product of it |
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Define the term electrolyte |
A medium with ions that is able to conduct electrical flow such as water, soluble salts. |
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If it is a covalent compound, then the particles are... |
Molecules |
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Define dissociation |
The process in which solid ionic crystals are broken up into ions when dissolved in water |
Sugar/salt dissolving in water |
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Define aqueous solution |
A solution in which a solvent is water |
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What is a solute |
A substance that dissolves in a solvent |
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What is cohesion |
Waters ability to stick to itself |
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What is adhesion |
Waters ability to stick to other substances |
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What is polarity |
Refers to unequal sharing of electrons in a molecule |
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What are covalent bonds |
Means electrons are shared in a atomic bond |
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Define Dissolution |
Is the process where ionic crystals break up into ions |
Also known as dissolving |
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What does polar covalent mean |
A bond formed between two atoms with a difference in electronegativities by sharing electrons is called a polar covalent bond. |
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Define atomic mass |
Mass of an atom which is equivalent to the number of protons and neutrons |
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Define Reactivity |
The measure of how easily an element will combine with other elements to form compounds. |
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Define density |
It is the measure of elements and the number of atoms and their mass when they occupy certain volume of space -it is the measure of the number of particles in a given volume of a substance usually given as the amount of mass -unit of measurement used is g/cm^3 -Formula Density = mass/volume (from left to right density increases also increases down the group of alkali metals & alkali earth metals) |
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What is atomic radium |
It is the distance from the center of the nucleus to the outermost energy level. |
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Define Electron Affinity |
The energy released when an electron is added to an atom in a gaseous phase (it increases from left to right in the PT) (it decreases down the periods in the PT) |
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Define the term allotropes |
Formed from the same element just different number of atoms e.g graphite or diamond |
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