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Matter Test

QuestionAnswer
__________is defined as how much matter an object is made of. Mass
_________is how much space an object takes up. Volume
A __________ _________ is any matter that has its own unique physical and chemical properties. pure substance
_________properties are those that can be identified without altering the identity of the substance. physical
_________properties is any property that produces a change in the composition of the matter. chemical
A _______change occurs when the identity is not altered. physical
A _________change occurs when a substance reacts and forms a new substance. chemical
_________properties are independent of the amount---color, texture,density intensive
______properties are dependent on the amount---mass, volume extensive
List 2 examples of pure substances element compound
An _________ is any substance that cannot be broken down into simpler substances element
A ________is two or more atoms chemically combined in a fixed ratio compound
A _________ is a combination of two or more substances physically combined in any ratio. mixture
A ________mixture is where the parts of the mixtures are noticeably different throughout. heterogeneous
A _______mixture is where the substances are evenly distributed and it looks the same throughout. homogeneous
A ______ is a homogeneous mixture where one substance is dissolved in another. solution
The _____ is the substance being dissolved and the _______does the dissolving solute solvent
_______is the universal solvent water
________is the separation technique that separates materials based on the relative size of the particles Ex- sand in water filtering
________is the separation technique that is used to separate a mixture of two or more liquids and uses their individual boiling points to separate them distillation
_________involves a sample being dissolved into a mobile phase and allowed to travel through a stationary phase chromatography
Who was the first person to state that matter was made of indivisible particles he called "atomos" or atoms Democratis
________discovered the electron JJ Thomson
Who discovered the positively charged particle the proton and that they are concentrated in the very center of the atom--nucleus Rutherford
Who discovered the neutron Chadwick
An _______ are atoms of the same element that differ in the number of neutrons isotopes
________gave us the planetary model of the atom. He stated that the electrons traveled well defined paths around the nucleus (orbitals)depending on the amount of energy they have Bohr
what is the modern model of the atom that we use today electron cloud model
The _____ number is the unique number that equals the number of protons in the nucleus in an atom of that element atomic
The _____ mass is the weighted average of all naturally occurring isotopes atomic
The ______ number is the atomic mass rounded to a whole number and indicates the number of protons and neutrons in the nucleus of an atom of the element mass
Who is given credit for creating the periodic table? Mendeleev
Columns are also called _____ or _______ groups families
Rows are also called______ periods
The period number tells you what? How many valence electrons
Give the family name for the following group number 1. Alkali Metals 2. Alkali Earth Metals 17. Halogens 18. Noble Gases
What family includes the most reactive metals? Alkali metals
What family includes the most reactive nonmetals Halogens
Waht family includes the stable nonreactive inert gases? Noble Gases
List the 7 metalloids Boron, Silicon, Germanium, Arsenic, Selenium, Antimony, Tellurnium
List the four characteristics of a metal lustrous, ductile, malleable, good conductors of heat
What two elements on the periodic table are liquids at room temperature Mercury Bromine
In the Bohr model, how many valence electrons can each level hold? First- 2 Second- 8 Third- 18 Fourth- 32
_________ electrons are the ones in the outermost energy level Valence
A Lewis Dot Diagram can have no more than ____ dots to represent valence electrons 8
The _____rule states that atom are stable with 8 valence electrons octet
List two exceptions to this rule Hydrogen Helium
List the 11 elements that are gases at room temperature hydrogen, helium, neon, Argo, krypton, xenon, chlorine, fluorine, bromine, nitrogen, oxygen
_________ is anything that has mass and takes up space. Matter
List the three subatomic particles and give their charge and location protons- positive charge- nucleus neutrons- neutral charge- nucleus electrons-negative charge-orbitals
Created by: aemiller