chapters1 and 2 of chemistry- Hollandsworth
1 Food Calorie = ______cal
the subshell s has _ orbital(s) with a maximum of _ electrons per sublevel
Chemists study matter from _ perspectives
the subshell p has _ orbital(s) with a maximum of _ electrons per sublevel
the subshell d has _ orbital(s) with a maximum of _ electrons per sublevel
the subshell f has _ orbital(s) with a maximum of _ electrons per sublevel
There are __ naturally occurring elements
How many elements are there total?
ability to burn, undergo corrosion, rust, precipitate
give 4 examples of chemical properties
______________ is how close to the actual value the measurement is
______________- Study of how to determine the exact composition of mixtures and compounds. What is present and what is the exact percent composition.
a negatively charged ion
what is an anion?
a positively charged ion
what is a cation?
The ___________ principle says that elctrons "build up"by filling the lowest energy level orbitals first
average atomic mass
the atomic mass on the periodic table is really the__________ __________ __________
______________- Study of the molecules and processes that take place in living organisms
A ______________ is the heat energy needed to raise the temperature of 1g of water to 1degree C
if something is edible then it is a ______________ property
chemical, nuclear stability
Isotopes of an element have the same __________ properties but different __________
______________- Properties of matter that are observed when atoms are rearranged removed replaced or added to compounds resulting in new compounds with differing physical and chemical properties
________ is the study of matter and changes that occur in matter
color, size, phase, mass
what are 4 examples of physical properties
Who was the scientist that came up with law of multiple proportions?
______________ atomic theory is microscopic model to explain macroscopic observations
down across right left
The atomic radius trend says that atoms tend to get larger and have increased radius when you go ___________ the periodic chart as you go ___________ a period, ___________to ___________
Elements and compounds
Pure substances can be divided into what two categories
Who was credited with the gold foil experiment?
chemistry is an ______________ science
these are properties that are dependent on how much matter is present
g med / kg body weight
Dosage = ________ / ___________
Homogenous and heterogeneous
mixtures can be divided into what two type of categories
___________- electrons fill degenerate orbitals one at a time (with the same spin), before pairing up electrons in the degenerate orbitals
______________- Study of the compounds of all other elements besides carbon
these are properties that are independent of how much matter is present
ionic and covalent bonds
compounds can be broken into what two type of bonds?
___________- energy needed to remove an electron from the outer shell of an atom in the gaseous state
__________ - atoms of the same element that differ in mass due to a different number of neutrons
who was credited with the cathode ray tube experiment
Who was the scientist that defined the law of conservation of mass>
The first atomic model was based on 3 major ______________ observations
Macroscopic, microscopic, symbolic
The 3 perspectives that chemist study matter from are?
___________ is an element that typically has less than 4 electrons in its outer shell
___________- elements that exhibit characteristics of both metals and non-metals
an electron has what charge?
a neutron has what charge?
Isotopes differ in the number of __________
Who explained the bright line of hydrogen using a planetary model?
___________- an element that typically has 4 or more electrons in its outer shell
atoms are most stable when they have 8 electrons
_________________- Study of compounds that have the element carbon as the basic structure
Pauli Exclusion Principle
______________________- electrons in the same orbital must have opposite spin
______________- Attempts to develop the theory for why matter behaves the way it does. The application of these theories can be applied to all areas of chemistry
______________- A property that can be observed without changing the molecular composition of matter
a proton has what charge?
______________ is how consistent a measurement is
A particular element is determined by the number of __________ in the nucleus
protons electrons neutral
in an atom, the number of __________ equals the number of __________ so that the atom is electrically __________ overall
mass number is the number of _________ +__________
Who was the scientist that came up with law of definite proportions by mass
Pure substances and mixtures
Matter can be divided up into what two categories?
______________ - a simple description of some property of the substance
______________- always involves a measurement of the property in questoin
Data from multiple measurements is scattered in a more or less uniform way around some average value. Thus equaling out. this is called ______________
Who was credited with the oil drop experiment?
______________ causes data to be either smaller or larger than the actual value
______________- the total kinetic energy of all particles in a material