Significant Figures
The number of significant figures in 0.00237
3
A condition that does not change during an experiment.
control
a nuclear particle that has no electrical charge
neutron
Identify the three major types of chemical bonding
ionic bonding, covalent bonding, metallic bonding
What is an intermolecular force?
the forces of attraction between molecules
The number of significant digits in 1.30 x 10^2
3
A broad generalization that explains a related group of facts or processes.
theory
the subatomic particles that are the least massive and the most massive
electron and neutron
What is the difference between polar and nonpolar covalent bonds?
Nonpolar bonds the electrons are shared equally. In polar bonds, the electrons are shared unequally.
According to VSEPR theory, what molecullar geometry is associated with AB2E2?
bent or angular
The answer to 5.44 - 2.6103 with correct significant figures
2.83
What type of observation is the temperature of a liquid?
quantitative
the difference between mass number and atomic number
mass number is the total number of protons and neutrons, atomic number is the number of protons
Would CO2 be polar or nonpolar?
nonpolar
What is the weakest intermolecular force?
london dispersion
The answer to 2.4 x 15.82 with correct significant figures.
38
What type of observation is the texture of a metal?
qualitative
the number of atoms in one mole of each element
6.02x10^23
What kind of bond do K and Cl have?
3.0 - 0.8 = 2.2
Ionic
What two factors determine whether or not a molecule is polar?
electronegativity and difference in molecular geometry
The answer to the addition of 4.2x10^4 and 7.9x10^3 with correct significant figures.
5.0x10^4
A hypothesis is a testable statement that serves as a basis for making predictions and for carrying out further experiments. A theory is a broad generalization that explains a body of facts.
the number of protons neutrons and electrons in zinc-66
30 protons
36 neutrons
30 electrons
What are some characteristics of metallic bonding?
good heat conductors, good electrical conductors, easily deformed, shiny
What is the molecular geometry of PCl5
trigonal bipyramidal