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Worksheets2024 chemistry midterm review
Total questions: 23
Worksheet time: 16mins
what should you do if you get acid on your hands?
wash hands for five minutes
wipe on your clothes
wash your hands for 10 to 15 minutes
what do isotopes are the same element having common and what is different
The protons are the same, and the mass changes
electrons are the same and valence electrons change
explain how Rutherfords gold foil experiment worked and what it proved
The nucleus exist and an atom is mostly empty. Space.
protons exist and electrons are in the electron cloud
the subatomic particle What subatomic particle determines the identity of a atom
the proton
neutron
electron
nucleus
how do you find protons, electrons, and neutrons
protons=atomic number
electrons=protons unless it’s a ion
neutrons=mass minus atomic number
protons=mass minus atomic number
electrons=protons unless it’s a ion
neutrons=atomic number
protons=mass minus atomic number
electrons=atomic number
neutrons=same as protons unless it’s a ion
The horizontal rose found on the periodic table are called _____, while the vertical columns are called _______ or _______
(a)
the most reactive elements on the periodic table is ______
alkali metals
halogens
flourine
nitrgron
electronegativity _______ going down groups and ______ going across periods from left to right
(a)
ionization energy _______ going down groups and ______ going across periods from left to right
(a)
atomic radius _______ going down groups and _______ going across periods from left to right
(a)
the number valence electrons _______ as you go across the period but will _____ as you go down to a group
(a)
the most reactive element
nitrogen
boron
fluorine
francium
the element with the largest atomic radius
hydrogen
iron
francium
fluorine
why are elements in the same group chemically similar
same number of valence electrons
same number of protons
same oxidation number
what do superscripts add up to in an electron configuration
the atomic number
the protons
the electrons
the valence electrons
what is a packet of light called that is released when an electron relaxes to the ground state
photon
radium
electrons shared between two nonmetals
convalent
ionic
electrons transferred from a metal to a nonmetal
covalent
ionic
low melting and boiling point
ionic
covalent
conduct electricity when melted or dissolved
ionic
covalent
why are metals malleable and ductile
metallic bonds consists of the sea of electrons
metallic bonds consists of strong bonds
define dimensional analysis
a way to solve problems using the units of measurement
a way to solve problems using sig figs
define scientific notation
used to write very large and very small numbers
used to write sig figs
