2024 PHYSICAL SCIENCE VOCABULARY EXAM QUESTIONS AND
VERIFIED ANSWERS GRADED A+
atomic mass
The number of protons plus the number of neutrons in the nulceus of an atom.
atomic number
The number of protons in the nucleus of an atom.
atoms
The basic building block of all matter.
chemical formula
Code that uses chemical symbols and subscripts to identify the number and types of
atoms of each element that make up a molecule or compound.
chemical symbol
A one or two letter code that represents an element.
compound
A pure substance that forms when two or more elements join chemically.
electron
Subatomic particle that move and spin around the nucleus of an atom that carry a
negative charge.
element
Pure substance that cannot be broken down into simpler substances by an ordinary
chemical means.
VERIFIED ANSWERS GRADED A+
atomic mass
The number of protons plus the number of neutrons in the nulceus of an atom.
atomic number
The number of protons in the nucleus of an atom.
atoms
The basic building block of all matter.
chemical formula
Code that uses chemical symbols and subscripts to identify the number and types of
atoms of each element that make up a molecule or compound.
chemical symbol
A one or two letter code that represents an element.
compound
A pure substance that forms when two or more elements join chemically.
electron
Subatomic particle that move and spin around the nucleus of an atom that carry a
negative charge.
element
Pure substance that cannot be broken down into simpler substances by an ordinary
chemical means.
