Basics of Biochemistry Flashcards
How many different elements make up the human body?
25
How many of the 25 elements that make up the human body are vital for survival?
11
What is an element?
A substance that cannot be broken down into any other substance. Every element is made up of its own type of atom
What way do groups go in the period table?
Across
What way do periods go in the periodic table?
Down
What three subatomic particles make up an atom?
Protons, neutrons, and electrons
What is the only element that does not have any neutrons?
Hydrogen
What subatomic particles make up the nucleus of an atom?
Protons and neutrons
What does the atomic number represent?
The number of protons, which is equal to the number of electrons
What does the mass number represent?
The total number of protons and neutrons
Where are electrons located in an atom?
Orbiting the nucleus
What is the charge of an electron
-1
What is the charge of a neutron?
0
What is the charge of a proton?
+1
What is the mass of an electron?
1/1836