What does a radioactive element do?
When atoms of different elements combine they form _____.
When atoms of different elements combine they form _____.
When sodium reacts with chloride usually a covalent bond is…
When sodium reacts with chloride usually a covalent bond is formed.
People are constantly exposed to what is termed background r…
People are constantly exposed to what is termed background radiation in the environment.
The nucleus of an atom always has a _____ charge.
The nucleus of an atom always has a _____ charge.
When atoms react chemically they gain, lose, or share _____.
When atoms react chemically they gain, lose, or share _____.
Why is iodine-131 used to assess thyroid function?
Why is iodine-131 used to assess thyroid function?
The _____ is the smallest particle of an element, which has…
The _____ is the smallest particle of an element, which has the properties of the element.
_____ formulas display the relative positions of each atom w…
_____ formulas display the relative positions of each atom within a molecule.
All nucleic acids must contain which of the following?
All nucleic acids must contain which of the following?