Chemistry Lab Quiz Lab Flashcards
Define atoms
The smallest part of an element that retains the properties of the element
Define atomic number means
The number of protons in the element
Define atomic mass
Protons plus neutrons
Define isotopes
And isotope or atoms with varying numbers of neutrons, the special physical property that they exhibit is radioactivity
Using the following periodic table, identify the atomic number of an element, the atomic mass of an atom, the number of protons, neutrons, and electrons
The atomic number- at the top of element
The atomic mass- at the bottom of element. It is comprised of protons and neutrons.
The number of protons is the number of their atomic number
The number of electrons is the same number of protons
neutrons is the number of protons subtracted from the atomic mass
What is the valence shell and the octet rule?
The valance shell is the outer shell of the element and the number it always tries to gain is -8e.
The octet rule is the tenancy to share, lose, or gain electrons gain stability 
The formula of water
H20
What is pH the measure of
pH is the measurement of constantration of H plus protons in a solution
Define alkaline and the scale on the pH level
Release hydroxyl ion in a solution
Above seven
Define acid and give the scale on the pH level
When they release free H plus into a solution
Below 7
What are covalent bonds, polar and nonpolar?
They’re strong chemical bonds and are formed when Atom share electrons to fill the valence shell
Polar covalent bonds are when they’re shared unequally
Nonpolar covalent bonds are when they’re shared equally
What are ionic bonds?
Ionic bonds are when atoms lose or gain electrons to fill the valence shell
Lose - cation
Gain - anion
what is the ph of blood
about 7.35 to 7.45
