vocab
a substance that cannot be broken down into simpler substances by ordinary chemical or physical means
Element
a substance formed by the chemical combination of two or more elements in definite proportions and usually having properties different from those of its constituent elements
compound
a bond that forms when electrons are shared by metal ions
metallic bond
what kinds of particles make up an atom
protons, neutrons, electrons
what does this graph show?
absolute hardness values
The number of protons in the nucleus of an atom
Atomic Number
a force that holds together atoms that form a compound
chemical bond
a naturally occurring, inorganic crystalline material with a unique chemical composition
mineral
whats the equation for density
p= M over V
how does talcs hardness on the Mohs scale compare with its absolute hardness?
very low
one of several distinct regions around the nucleus of an atom where electrons are located
Energy Level
an atom or a molecule that possesses an electron charge
ion
any one of numerous minerals that have the oxygen and silicon tetrahedron as their basic structure
silicate
the central region of an atom includes
neutrons and protons
describe the relationship between mohs hardness and absolute hardness
the first 5 or 6 minerals both hardness values are the same then the absolute hardness increase a lot
an atom with the same number of its protons, but different numbers of neutrons for a given element
Isotope
a bond that forms between negative and positive ions
ionic bond
a structure composed of 4 oxygen atoms surrounding a silicon atom, which consititutes the basic building block if silicate minerals
silicate-oxygen tetrahedron
protons in a atom
determine the kind of element
how do isotopes of an element differ
same electrons and different neutrons
the number of neutrons and protons in the nucleus of an atom
Mass Number
a bond that forms when atoms share electrons
covalent bond
what happens when two or more atoms react
electrons are gained lost or shared
if the atomic number of an element is 6 and its mass number is 14, how many neutrons are in the atoms nucleus
8
define a mineral
a naturally occurring, inorganic crystalline material with a unique chemical composition