The atom is the smallest particle of an element . . what did Democritus say about the atom ? .
Democritus ; believed atoms were indivisible and indestructible .
100
how do you figure out the product of Frequency and wavelength ? .
c=λv
100
Ionic Bonding is the eletrostatic attraction that binds oppositely charged ion together .
How is valence electrons , electron dot structure and the octet rule similar ? .
Valence Electrons ; an electron in the outer shell of an atom which can combine with other atoms to form molecules.
Electron Dot Structures ; are diagrams that show the bonding between atoms of a molecule
Octet Rule ; Rule suggesting that upon bonding, an atom tends to lose, gain or share electrons so that it is surrounded by eight valence electrons.Rule works best for C, N, O and F. See also expanded valence shell.
100
Define molecule . Whats the different btw a acid and a base ? .
neutral group of atoms joined together by covalent bonds .
Acid ; chemical acid that neutralizes alkalis, dissolves some metals, and turns litmus red.'
Base ; a compound that produces hydroxide ions in solution .
100
Chemical Reactions is one or more substances change into one or more new substances , what the substance the present in the beginning of the reaction ? . What is produced in the reaction ? .
The reactant is there in the beginning and the product is produced .
200
Neutrons , Protons and Electrons , who discovered each subatomic particle ? . and the nucleus ? .
Thomson discovered electrons .
Chadwick confirmed the existence of Neutrons .
Rutherford was praised for finding out about the nucleus and Protons .
200
True or False . .
The Russian physicist Werner Heisenberg came up with ,
The Heisenberg uncertainty principle ; it states that it is possible to know exactly both the velocity and the postion of a particle at the same time .
False , he's German and it's NOT possible .
200
Whats an example of a monatomic ion ? . What about a polyatomic ion ? .
any kinds of examples like
Monatomic ion ; Li +
Polyatomic ion ; Nitrate
200
What would example be of each ? .
- linear
- trigonal planar
- tetrahedral
- BCl 2
- BCl 3
- CCl 4
200
Whats something you know about . .
Combination reaction
and
Combustion reaction
Combination reaction
- substances combine to form more complex substances.
Combustion reaction .
- reaction between a substance and oxygen, which releases energy .
300
True or False
The group , period , atomic mass , atomic number , mass number , metals , non metals , transition metals , inner transition metals , representative metals , noble gases and metalloids can all be found on the periodic table .
True .
300
Electromagnetic Radiation is a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously.
What does the spectrum have to do with Electromagnetic Radiation ? .
The spectrum is the visible light ; when the sunlight passes through a prism , the different frequencies separate into colors of the rainbow .
300
True or False .
polar covalent bond the bond btw atoms in which elections are shared equally .
Define Dipole .
False . unequally .
Dipole ; a molecule that has two poles . or regions , with opposite charges .
300
What symbolizes a single , double and triple bond ? .
Define sigma and pi bond .
- , = and ≡ .
sigma Bond ; bond formed when two atomic orbitals combine for form molecular orbitals that;s symmetrical around the axis connecting the two atomic nuclei .
Pi Bond ; convalent bond in which the bonding electrons are most likely to be found in sausage-shaped regions .
300
What is a chemical eaquation for an balanced equation ? . Identify the coefficients .
Fe + Cl2 = FeCl3 ; the coefficient is 13 .
400
Nuclear Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles ; define Fission and Fusion .
Fission ; dividing / spitting into two or more parts .
Fusion ; process of joining together .
400
What's the electron Arrangement ? .
In the context of the VSEPR theory, this refers to the three dimensional arrangement of bonding and lone pair electrons around the nucleus of an atom in a molecular compound .
400
True or False .
Metallic Bonding is the force of attraction that holds metals together .
True .
400
True or False . .
Convalent Bonding is a bond formed by the sharing of protons btw atoms .
Is Polar bond a type of covalennt bond ? .
False , Its the sharing btw electrons .
and
Yes .
400
Molecular Geometry is the shape of a molecule, based on the relative positions of the atoms.
what is tetrehedral's angle ? .
109.5
500
Cations and Anions are types of ion , what's there charge ? . whats the periodic law ? .
an anion is an electronegative ion .
a cation is a postively charge ion .
periodic law ; the principle that chemical properties of the elements are periodic functions of their atomic numbers.
500
True or False
Amplitude is the width of the wavelegth .
False . Its the height .
500
True or False .
Amorphous solid and network solids are the exact same thing , just worded differently .
False .
network solids ; solid in which all of the atoms are convalently bonded to each other .
Amorphous solid ; describes a solid that lacks an ordered internal structure .
500
Give an example of an resonance structure .
CO 3 2-
500
skeleton equation
net ionic equation
complete ionic equation