unit 2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Matter | anything that has mass and volume
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| Atom | the smallest particle of an element that maintains the chemical characteristics of that element
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| Proton | the positive particle in the center of an atom
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| Neutron | the neutral particle in the center of an atom
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| Electron | the negative particle which orbits the center of the atom
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| valance electrons | the outermost layer of electrons which are involved in bonding
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| Electron Cloud/ Shells/Orbitals | the outermost portion of an atom where the electrons are housed
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| Nucleus | the center of the atom composed of neutrons and protons
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| Element | a substance of matter made of only one kind of atom (pure substance)
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| Period | a row of elements on the periodic table whose properties change gradually and predictably
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| Group/ Family | columns on the periodic table which have similar chemical properties (# of valence e-)
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| atomic number | A classifying number of an atom which indicates proton and electron count
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| Atomic Symbol | A shorthand letter symbol used to identify atoms. First letter is always capitalized.
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| Atomic Weight | the average weight of one atom of an element (protons + neutrons), based off of Carbon.
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| Molecule | neutral particle formed when atoms share electrons (can be elemental or compound based)
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| compound | substance that contains 2 or more different elements
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| chemical bond | when two or more atoms are held together by sharing or transferring electrons (stores energy)
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| Polar Molecule (Polar Bond) | a molecule/bond which has 2 charged sides
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| Non-polar Molecule (Bond) | a neutral molecule/bond with no charge
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| States of Matter | matter can change state based on temperature and resulting density of atoms: solid, liquid, gas
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| Chemical Reaction | a reaction in which energy causes a bond to be rearranged, and a new chemical substance is created
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| Physical Reaction | A change to the size or shape of a substance which does not create a new chemical substance
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| Law of Conservation of Mass | matter can neither be created nor destroyed
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| Exothermic Reaction | a chemical reaction which releases heat energy (gets hot)
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| Endothermic Reaction | a chemical reaction which requires energy to begin (gets cold)
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| Catalyst | a chemical which speeds up a reaction
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| Covalent Bond | a bond in which electrons are shared
Ionic Bond - a bond in which electrons are transferred/taken
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| Metallic Bond | a bond in which electrons are pooled
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| mixture | a substance in which two or more chemical substances are combined but not bonded chemically
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| solution | a uniform mixture
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| solute | the substance being dissolved
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| solvent | the substance dissolving
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| boiling point | the temperature of the substance where the vapor pressure of the substance is equal to the surrounding air pressure
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| melting point | the temperature at which a substance changes state from solid to liquid at normal atmospheric pressure
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| solubility | the ability of a substance to dissolve in solution
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| isotope | atom with varying amounts of neutrons
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| ion | charged atom, as in an ionic bond
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| reactant | the portion of a chemical reaction that is changing
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| product | what results from a chemical reaction
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| saturated | a solution that has as much solute as possible
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| super-saturated | a solution with MORE than the normal amount of solute possible
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
megan_lacivita21
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