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WorksheetsPrentice Hall Chemistry Ch4 Vocab
Total questions: 22
Worksheet time: 12mins
Atom
the smallest particle of an element that retains its identity in a chemical reaction
negatively charged subatomic particles
positively charged subatomic particles
the tiny central core of an atom and is composed of protons and neutrons
All elements are composed of tiny indivisible particles called atoms
True
False
Atoms of the same element are identical
True
False
Atoms of different elements can NOT physically mix together or can chemically combine in simple whole-number ratios to form compounds
False
True
When atoms are separated, joined, or rearranged, chemical reactions does NOT occur
False
True
Individual atoms are observable with instruments such as ___________
scanning tunneling microscopes
Anything else
scanning microscopes
The different kinds subatomic particles are
electrons, protons and neutrons
electrons, protons and cathode
electrons, cathode and anode
electrons, protons and nucleus
Electrons
negatively charged subatomic particles
subatomic particles with no charge with a mass nearly equal to that of protons
positively charged subatomic particles
JJ Tomason’s ecperimen’s result was a_______, that traveled from the cathode to the anode
glowing beam
cathode ray
beaming ray
cathoden anode
Select which ones are true
Cathode are negative metal disk
Cathode are positive metal disk
anode are positive metal disk
anode are negative metal disk
Protons
positively charged subatomic particles
negatively charged subatomic particles
subatomic particles with no charge
Neutrons
negatively charged subatomic particles
positively charged subatomic particles
subatomic particles with no charge with a mass nearly equal to that of protons
Nucleus
the tiny central core of an atom and is composed of protons and neutrons
A kind of subatomic particles
the total number of protons and neutrons in an atom
Electron are located in the nucleus and does Not occupy almost all the volume of the atom
True
False
Elements are different
because they contain different numbers of protons
because they contain different numbers of neutrons
because they contain different numbers of electrons
Atomic number
an element is the number of protons in the nucleus of an atom of that element
the total number of protons and neutrons in an atom
one 12th of the mass of a carbon-12 atom
Mass number
the total number of protons and neutrons in an atom
an element is the number of protons in the nucleus of an atom of that element
a weighted average mass of the atoms in a naturally occurring sample of the element
________ = (mass of an isotope x natural abundance (decimal)) + (mass of an isotope x natural abundance (decimal)) (+....)
Atomic mass
Atomic mass unit
Mass number
Atomic number
an arrangement of elements in which the elements are separated into groups based on a set of repeating properties
Periodic table
Period
Group or family
A periodic table allows you to compare the properties of one or more elements to another one or more elements
True
False
Period
horizontal row
vertical column
Group or family
vertical column
horizontal row
