chapter 2
chapter 3
chapter 4
chapter 5
chapter 6
100
Hypothesis
What is an educated guess?
100
exothermic
What is a reaction that gives off heat?
100
Atoms of the same element that have different numbers of neutrons
What are isotopes?
100
the electrons in an atom's outermost orbital
What are valence electrons?
100
the same number of valence electrons
Elements with (fill in the blank) that are the same have similar properties
200
1.52 meters
What is 152 cm converted to meters?
200
where all motion stops, the lowest possible temperature, and is equal to -273 C
What is absolute zero?
200
ground state
What is an electron in its lowest energy level?
200
valence electrons
What do the dots in a Lewis electron-dot structure represent?
200
increasing atomic mass
Elements are arranged on the periodic table according to
300
2.23x10 5
What is 223000 in scientific notation?
300
It states that the total amount of energy remains the same
What is the Law of Conservation of Energy?
300
radioactivity
What is the spontaneous production of rays of particles and energy by unstable nuclei?
300
6
What is the maximum number of electons the p orbital can hold?
300
Phosphorus
Out of Vandium, Bromine, Sodium and Phosphorus, which has 5 valence electrons?
400
a series of logical steps that is followed in order to solve a problem
What is scientific method?
400
An example of chemical property
What is the flammability of gasoline?
400
Positively charged atoms
What are cations?
400
2
How many electrons can the first energy level hold?
400
noble gases
Which elements are non-reactive and therefore do not normally gain or lose electrons?
500
the closest number you get when you measure something
What is accuracy?
500
A pure substance that is composed of two or more different elements
What is a compound?
500
electrons
What subatomic particle has a negative charge?
500
States that a maximum of 2 electrons may occupy a single atomic orbital, but only if electrons have opposite spin
What is Pauli's exclusion principle?
500
Metals
What are on the left side of the table and lose electrons?
M
e
n
u