Measurements and Graphs
The little "5" in the numerical term 3.14 x 105 is called?
An exponent
What family of elements does "Chlorine" and "Fluorine" belong to?
Halogens
Where can electrons be found?
In shells or orbitals
This is a type of bond that forms between metals and nonmetals.
Ionic bond
How many moles are present in 5O2?
5
On a graph, the data for the independent variable is plotted along the ___________.
X axis
What unit of measure is the atomic mass number in?
Atomic mass units (amu)
Electrons get excited and jump up to a higher energy level when they absorb a ________.
Photon
These metals take Roman numerals in their names.
Transition metals
How many moles are present in 3Fe3O4 ?
3
What is the name of the variable in an experiment that does not change?
Control variable
Where can one find neutrons?
In the nucleus of an atom
The energy state of electrons closest to the nucleus is called?
Ground state or n = 1
In a water molecule, these bonds enable water to easily change from a solid to a liquid to a gas and back.
Hydrogen bonds
In the chemical reaction: 3H2 + O3 ---> 3H2O, what is the mole ratio of H2 to O3 ?
3 to 1
In a positive linear relationship, the data for the independent and the dependent variable that is plotted...
Increase together
In the compound 4Na2O, what is the number "4" known as?
Coefficient or mole
The tendency of an element to want to bond with another element to gain electrons is called?
Electronegativity
A net dipole moment indicates?
Polarity (or partial positive and negative charges on a molecule)
In the chemical reaction: N2 + 3H2 ---> 2NH3, what is the mole ratio of H2 to NH3 ?
3 to 2
In an inverse relationship, as X increases, Y _________.
Decreases
How many atoms are in 6H2SO4 ?
42 atoms
The amount of energy needed to remove an electron is called?
Ionization Energy
What is the name of this compound: K2O ?
Potassium Oxide
What mole is needed to balance the following chemical reaction?
2SO2 + O2 ---> __SO3
2