Chemistry Chapters 5-7
The reaction of carbon with oxygen to produce carbon monoxide is an example of which class of reaction 2C +O2------> 2CO
combination reaction
According to naming rules, the types of compound that use prefixes in their names are
covalent compounds
Fe2(SO4)3 is called
iron (III) sulfate
How many electrons will aluminum gain or lose when it forms an ion
lose 3
To form an ion, a sodium atom
loses one electron
In ionic compounds __________ lose their valence electrons to form positively charged _________
metal, cactions
A __________ is the smallest neutral unit of two or more atoms held together by a covalent bond
molecule
In a covalently bonded molecule, the number of electrons that an atom shares with others is usually equal to the number of electrons...
needed to give it a noble gas arrangement
Avogadro's number is the number of ________
particles in 1 mole of substance
A group of covalently bonded atoms that has an overall electrical charge is called a(n)
polyatomic ion
The force of gas particles against the walls of container is called
pressure
Double and triple bonds form because
single covalent bonds do not give all of the atoms in the molecule eight valence electrons
A chemical equation is balance when
the number of atoms of each element is the same in reactants and products
The VSEPR theory allow us to determine
the shape of a molecule
3.00 moles of NO2 have a mass of
138 g
What is the molar mass of copper (II) sulfate, CuSO4
159.6 g
What is the molar mass of sodium phosphate, Na3Po4
164.0 g
Elements in group 2a (2) of the periodic table forms ions with a charge of
2+
One mole of neon has a mass of
20.2 g
The molar mass of potassium is
39.1 g
A temperature of 125 C is the same as
398 K
One mole of particles of any substance contains how many particles
6.02 x 10^23
How many grams of glucose (C6H12O6) are in 3.55 moles of glucose
639 g
Which measurement describes the pressure of gas
725 mm Hg
The molar mass of C3H8O2
76.0 g
The unit of 1 atmosphere used to describe the pressure of a gas is equal to
760 mm Hg
How many grams of Fe2O3 are there is 0.500 mole of Fe2O3
79.8 g
4.00 moles of sodium have a mass of
92.0 g
In a molecule with covalent bonding...
atoms are held together by sharing electrons
A polar covalent bond is found in which of these compounds
H2O
Ionic bonding is expected in which of these components
KF
How many moles of K2 SO4 are in 15.0 g of K2So4
0.0861 moles
0.100 mole of lithium weighs
0.694 g
How many moles of carbon atoms are there in 0.500 mole of C2H6
1.00 mole
What is the molar mass of sodium phosphate
N
Which of the following is NOT part of the kinetic theory of gases
There is very little empty space in a gas
The following reaction takes place when an electric current is passed through water. It is an example of a _________ reaction 2H2O ----------->2H2 + O2 electricity
decomposition reaction
How many electrons will chlorine gain or lose when it forms an ion
gain 1
An anion always
has a negative charge
An ionic compound
has a net charge of zero
