Matter and Periodic table Flashcards
Combination of two or more pure substances
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Mixtures
Substances with a fixed composition.
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Pure Substances
Substances that consists of identical atoms
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Elements
A pure substance is made up of two or more elements in a fixed ratio by mass.
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Compounds
Has a uniform composition throughout.
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Homogenous Mixture
Substances that cannot be further purified
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Pure Substances
Has a nonuniform composition throughout.
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Heterogeneous Mixture
Characterized by its formula
that gives the ratios of the compound’s constituent elements.
CHOICES:
Elements, Homogenous Mixture, Heterogeneous Mixture, Compounds, Pure Substances, Pure Substances, Mixtures
Compounds
There are 118 elements known and 86 of them occur in nature. True or False
False - 88
Elements in the periodic table are arranged in similar atomic weight through rows and columns. True or False
False - arranged in similar properties
Who proposed the dobereiner’s triad?
CHOICES:
Johann Wolfgang Dobereiner, Jonathan Wolfgang Dobereiner, Henry Moseley, John Newlands, Dimitri Mendeleev
Johann Wolfgang Dobereiner
The concept of dobereiner’s triad is to group the similar elements not triads where the atomic weight of the second element is the sum of the first and third element. True or False
False - average of the first and third element
John Newlands discovered that the properties of 8th element are a repetition of properties of the 1st element. True or False
True
Atomic weights of the
elements were related to the periodic variation in their properties in the Mendeleev’s table. True or False
True
Who suggested that it was the charge of the nucleus and not the atomic weight that accounted for the periodic trends in the properties of the elements?
CHOICES:
Johann Wolfgang Dobereiner, Jonathan Wolfgang Dobereiner, Henry Moseley, John Newlands, Dimitri Mendeleev
Henry Moseley
Solid at room temperature (except for mercury which is liquid), shiny, can conduct electricity, ductile and malleable
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Metals
Appear to the right side of the Periodic Table
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Nonmetals
Composed of 6 elements: boron, silicon, germanium, arsenic, antimony, and tellurium.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Metalloids
Some are shiny like metals but do not conduct electricity (such as silicon).
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Metalloids
cannot conduct electricity, can be solid (phosphorus and iodine), liquid (bromine), or gas (Group 8A or noble gases).
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Nonmetals
Have some properties of metals and some of nonmetals.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Metalloids
Accept electrons in chemical reactions.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Nonmetals
It increases with increasing number of electron shell down a group in the periodic table (increases down and left)
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Atomic size
Amount of energy released or
exerted when an atom gains an electron.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Electron Affinity
Energy needed to separate an electron from a gaseous ground state atom.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Ionization Energy
Ability of the atom to gain
additional electron which depends on the attraction between the electron and the nucleus of an atom.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Electron Affinity
Refers to the distance from the nucleus to the outermost occupied electron shell.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Atomic size
Ability of an atom to attract
and electrons to itself.
CHOICES:
Metals, Atomic size, Electron Affinity, Electronegativity, Atomic size, Ionization Energy, Nonmetals, Metalloids
Electronegativity
Oxygen, Silver, and Diamond are classified as _________
Elements
Table salt and Carbon Dioxide are classified as _________
Compounds
Sea water, Air, Bronze, and Wie are classified as ______
Mixture
