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- 1. Multiple Choice
the basic structural unit of matter
atom
matter
element
nucleus
- 2. Multiple Choice
a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means
element
subatomic particle
electron
matter
- 3. Multiple Choice
the positively charged subatomic particle contained in the nucleus of an atom
proton
neutron
electron
matter
- 4. Multiple Choice
a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge
proton
neutron
electron
matter
- 5. Multiple Choice
a negatively charged subatomic particle that orbits the nucleus of an atom
proton
neutron
electron
matter
- 6. Multiple Choice
an arrangement of the elements according to their atomic numbers so that elements with similar properties are in the same column and properties repeat from row to row
Periodic Table of Elements
Atomic Theory
Isotopes
Subatomic Particles
- 7. Multiple Choice
one or two letters that represent the name of an element
element name
element symbol
atomic number
atomic mass
- 8. Multiple Choice
a unique number for each element that equals the number of protons in an atom of that element
element name
element symbol
atomic number
atomic mass
- 9. Multiple Choice
the mass of an atom, calculated by adding the number of protons and neutrons in the nucleus of the atom
element name
element symbol
atomic number
atomic mass
- 10. Multiple Choice
a grouping of elements based on similar properties, arranged by columns in the periodic table; also known as a group
family
period
row
isotope
- 11. Multiple Choice
a row on the Periodic Table of Elements
family
period
row
isotope
- 12. Multiple Choice
one of several forms of a single element, which contains the same number of protons, but different numbers of neutrons
isotope
ion
orbital
nucleus
- 13. Multiple Choice
an atom or group of atoms that has gained or lost one or more electrons and is now either positively or negatively charged
isotope
ion
orbital
nucleus
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