A molecule that contains two atoms. Include Halogens, gases.
Ex...
(N2
O2
Cl2
etc...)
What is a Diatomic Molecule
100
What information does a molecular formula provide?
A molecular formule shows how many atoms of each element a substance contains.
100
what are all the diatomic molecules
F2, Cl2, Br2, I2, O2, N2, H2
100
Group 3A metals form ions with a ________ charge
3+
100
A mole of hydrogen gas, H2(g), contains 6.02 x 1023
molecules
200
A covalent bond between atoms in which the electrons are shared unequally.
Ex.. H-Cl
O
/ \
H H
What is a Polar Bond
200
How do electronegativity values determine the charge distribution on a polar bond?
The more-electronegative atom attracts electrons more strongly and gains a slightly negative charge. The less-electronegative atom has a slightly positive charge
200
What state are most ionic compounds in at room temperature?
solid
200
Ions containing more than one atom are called ________
polyatomic
200
The atomic mass of fluorine is 19.0 amu, so the molar mass is
19.0 g
300
compound composed of two elements.
Ex Fe2O3
Ca2S2
What is Binary Compound
300
To write the formula of a ________________, First write the symbol of the cation and then the anion. Then add subscripts as needed to balance the charges. To name a _____________ , place the cation name first, followed by the anion name.
How do you determine the formula and name of a binary compound.
300
ionic bonds are __ than covalent bonds
stronger
300
NH4+
Ammonium
300
Calculate the molar mass of ammonium nitrate.
80.05 g
400
a substance is 6.02 ×10^23 representative particles of that substance and is the SI unit for measuring the amount of the substance.
What is a mole
400
the atomic mass of an element expressed in grams is the mass of a mole of the element.
how do you determine the molar mass and an element and a compound
400
the atoms held together by sharing electrons are joined by a _______________ ________.
covalent bond
400
Name the compound as an acid.
H2SO4
sulfuric
400
the complete reaction of a hydrocarbon with oxygen to produce carbon dioxide and water
combustion
500
the percent by mass of each element in the compound
What is percent composition
500
%by mass of element= mass of element
_______________ x 100%
mass of compound
formula of percent composition
500
true or false
In naming the first element in a formula, the prefix mono- is not used.
true
500
write the formula for iron(lll)carbonate
Fe2(CO3)3
500
What is the volume of 0.35 mol of oxygen gas at STP?