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An element is a substance that cannot be broken down into simpler substances by chemical means. It is characterized by its unique atomic number, which determines the number of protons in its nucleus and its placement on the Periodic Table. Each element has distinct chemical properties and may exist in different forms known as isotopes.
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Which of these terms describes the smallest particle of an element that has all the properties of that element?
Atom. An atom is the smallest unit of an element that retains all the properties of that element. It consists of a nucleus containing protons and neutrons, surrounded by electrons.
What prefix describes a molecule with seven atoms of the same element?
The prefix for seven atoms of the same element is "hepta-". So a molecule with seven atoms of the same element would be described as "heptatomic".
What best describes a single -replacement reaction?
A single-replacement reaction is a type of chemical reaction where an element replaces another element in a compound. This occurs when a more reactive element displaces a less reactive element from its compound, forming a new compound and releasing the displaced element.
What describes an atomic number of an element?
The atomic number of an element is the number of protons in the nucleus of an atom of that element. It determines the unique identity of an element and its position on the periodic table. Elements with the same atomic number belong to the same element, while elements with different atomic numbers are different elements.
Which best describes the definition for the atomic mass of the element?
it is the weighted average of the masses of an element's isotopes.
What is a symbol on a periodic table?
Symbol describes an element. It notates name of element.
What describes radioisotope?
An isotope of an element that is radioactive
What best describes the meaning of the mathematical word element?
An element is an item that belongs to a set.
What is the term that describes a negatively charged element?
anion
Which element of art describes how something feels?
Texture
What word describes each element in a sequence?
It is a 'term'
Which best describes the definition of the atomic mass of an element?
it is the weighted average of the masses of an element's isotopes.
What term describes a pure substance that is made up of only one atom?
This is a chemical element.
What best describes a radioisotope?
its nucleus is unstable
Which term best describes neon?
element
What element of art describes the darkness or lightness of an object?
ice
What terms best describes the nucleus of a radioactive element?
unstable
