Which of the following lists contain elements that have ionic forms critical to muscle contraction and action potential generation?
Ca, Na, K
atoms with unpaired electrons in their outermost shells.
A physician suspects a patient may have a thyroid tumor. Which of the following radioisotopes will help the physician confirm the initial diagnosis?
Which of the following is an ion and why?
O2- because it contains an unpaired electron in its outer shell.
Which of the following compounds is polar covalent?
form between hydrogen and nitrogen or oxygen atoms.
In a chemical reaction,
the starting materials are called products.
This is a derivative of riboflavin.
The kinetic energy needed to break the chemical bonds in reactant molecules is called
Which of the following influence the rate of a chemical reaction?
the concentration of the reactants
the presence of catalysts or enzymes