scieance quiz Flashcards
why study science
to understand the universes around us.
Atom
smallest substance with traits
what makes up the nucules
protons and neutrons
what is the nucleus
the center of an atom
whats the mass number
the total amount of protons and neutrons in the nuclues
periodic table
a chart where all elements are organized into groups and periods according to their properties
neutron
an atom with an neutral charge
chemical code
one or two letters that stand for an element
electron cloud
In the electron cloud model of an atom, region around the nucleus where an electron may be found.
electron
negatively charged atom found outside of the nucleolus
mass
the amount of matter in something weighed in grams
atomic number
Number of protons in the nucleus of one atom of an element.
physical properties
Property of matter that can be observed without changing the composition or identity of the matter.
law of conversation of mass
matter can not be created nor destroyed it can only be made into something new
matter
the substance or materiel all objects are made up of.
proton
a positively charged atom found in the nucleus
who created the periodic table????????
Mendeleev
what determines the atomic number
neutrons
the number of atoms in an element
atomic number
Cl
chlorine
the sum of the number of protons and neutrons in an atom
mass number
C
Carbon
H
hydrogen
how many neutrons does einsteinium have
153
how many protons does Molybdenum have
42
Fe
iron
how many electrons does silcon have
14
how many protons does neon have
10
a substance that is only made up of one atom is called an
element
atomic mas for iron
56
compound
2 or more atoms chemically combined
air is a
mixture
mixture
Two or more substances which are physically combined and can be separated by physical means.
what is water
a compound
electrons are found orbiting in
in cloud regions
is carbon has a #6 and proton 5 and electron six what is the neutron
SIX duh
whats it called when your smaller than an atom
subatomic
an element is an atom with
specific traits
there is ——- elements found naturally on earth
92
elements in the same family share
simile traits
elements in the same family share the same amount
of electrons int he outer orbit
the electrons in the outer orbit do all the
bonding (combining) with other elements.
the top period has 1 orbit
row 2 had 2 orbits
there are around________elements only around______are in your body
120 & 40
95% of our bodies are
H,N,O,P and caluium
___ make up most of the matter in our universe
18
matter is really rare in outer space but
not on earth
elemets in the same period share the same
electron locations
as you move down the rows each row adds an orbital
periodic means
a predictable pattern
