science
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Chemical Bonding | the combining of atoms to form molecules or ionic compounds, and also holds the atoms or ions together
🗑
|
||||
| valence electrons | an electron that is found in the outermost shell of an atom and that determines the atom’s chemical properties
🗑
|
||||
| ionic bonds | in ionic bonds valence electrons are transferred from one atom to another atom
🗑
|
||||
| covalent bond | a bond formed when atoms share one or more pairs of electrons
🗑
|
||||
| double | displacement reaction
🗑
|
||||
| decomposition reaction | a reaction in which a single compound breaks down to form two or more simpler substance
🗑
|
||||
| law of conservation of mass | the law that states that mass cannot be created or destroyed but can be changed from one form to another
🗑
|
||||
| metallic bond | a bond formed by the attraction between positively charged metal ions and the electrons around them
🗑
|
||||
| product | a substance that forms in a chemical reaction
🗑
|
||||
| synthesis reaction | a reaction in which two or more substances combine to form a new compound
🗑
|
||||
| single | displacement reaction
🗑
|
||||
| reactant | a substance or molecule that participates in a chemical reaction
🗑
|
||||
| isotope | an atom that has the same number of protons (or the same atomic number) as other atoms of the same element do but that has a different number of neutrons (and thus a different atomic mass)
🗑
|
||||
| atomic number | number of protons in an atom
🗑
|
||||
| atoms | no charge, and is the smallest particle into which an element can be divided and still be the same element
🗑
|
||||
| diatomic molecule | two atoms of the same element
🗑
|
||||
| electrons | not all electrons in an atom make chemical bonds, can be found in the outermost energy level
🗑
|
||||
| proton |
🗑
|
||||
| neutron |
🗑
|
||||
| period | row of elements
🗑
|
||||
| group/family | column of elements
🗑
|
||||
| Dmitri Mendeleev | russian chemist, who arranged the elements in order of atomic mass
🗑
|
||||
| Henry Mosely | 1914 changed the arrangement of the elements on the table, he put them in order of increasing atomic number because there were some flaws in Mendeleev’s arrangement
🗑
|
||||
| atomic mass | tells us how many protons plus neutrons in one atom of the element
🗑
|
||||
| nonmetals | not ductile or malleable, usually not shiny, not good conductors of heat and electricity
🗑
|
||||
| metalloids | properties of both metals and nonmetals, also called semiconductors, have about half of a complete set of electrons in outer energy level
🗑
|
||||
| metals | solid at room temperature except for mercury, have few electrons in outer energy level, shiny, ductile, malleable, good conductors of heat and electricity
🗑
|
||||
| noble gas | nonmetals, valence electrons: 8, except helium has 2, not reactive, colorless, odorless gases at room temperature, 1% of earth’s atmosphere, light bulbs, blimps, weather balloons, used to make colored lights
🗑
|
||||
| Alkali metals | contains metals, 1 valence electron, very reactive, shared properties are soft, silver, colored, shiny, low density, ex. of compounds made with these elements sodium chloride and potassium bromide
🗑
|
||||
| Alkaline earth metals | contains metals, valence electrons 2, second most reactive metals, other shared properties: silver colored and more dense than alkali metals, ex. of compounds with these elements: magnesium compounds in airplanes, cement, and chalk
🗑
|
||||
| Lanthanides | transition metals, shininess, reactive, used to make steel and are used in computer monitors
🗑
|
||||
| Actinides | transition metals, radioactive or unstable, made into laboratories; don’t occur in nature
🗑
|
||||
| boron family | 1 metalloid and 4 metals, valence electrons: 3, reactive, solids at room temperature, most abundant element in earth’s crust, used to make auto parts, foil, cans, and siding
🗑
|
||||
| carbon family | 1 nonmetal, 2 metalloids, and 2 metals, valence electrons: 4, reactivity varies among elements, solids at room temperature, makes diamonds and is in bio
🗑
|
||||
| nitrogen family | 2 nonmetals, 2 metalloids, 1 metal, valence electrons: 5, reactivity varies among the elements, solids at room temperature (except for nitrogen) , 80% of air, fertilizers
🗑
|
||||
| oxygen family | 3 nonmetals, 1 metalloid, 1 metal, valence electrons: 6, reactive, solids at room temperature (except oxygen), 20% of air, necessary of burning and for most living organisms
🗑
|
||||
| halogens | nonmetals, valence electrons: 7, very reactive, poor conductors, violent reactions with alkali metals to form salts, never found uncombined in nature, salt, disinfectants water treatment, disinfectant
🗑
|
||||
| hydrogen family | nonmetals, valence electrons: 1, reactive, colorless, odorless gas at room temperature, low density, explosive reactions with oxygen, found in stars, most abundant element in the universe, used for rocket fuel
🗑
|
||||
| Gilbert Lewis | though of the theory that each bond is made up of two electrons and that they are shared gained or lost and that chemical bonds are holding the atoms together
🗑
|
||||
| Octet rule | Remember that all atoms want a FULL OUTER ENERGY LEVEL (8 valence electrons) in order to be like a noble gas, REMEMBER THAT EIGHT IS GREAT!!!!!!!!
🗑
|
||||
| cations | positively charged ions
🗑
|
||||
| anions | negatively charged ions
🗑
|
||||
|
🗑
|
|||||
| Nucleus | two or more nuclei that have small masses combine, or fuse, to form a larger nucleus
🗑
|
||||
| Electron | no charge
🗑
|
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.
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Created by:
PaulCookie
Popular Chemistry sets