Electrons
The atomic number is the same as the number of these two sub atomic particles
What is protons and electrons
Florine is the most __________ element (biggest, smallest or electronegative)
What is electronegative?
Which unit can be used to express solution concentration?
What is mol/L
A redox reaction mainly focuses on the flow of______
What are electrons?
What two notations represent different isotopes of the same element
A 6:4 Be and 9:4 Be
B 7:3 Li and 7:3 Li
C 14:7 N and 14:6 C
D 32:15 P and 32:16 S
What is A 6:4 Be and 9:4 Be
You calculate the number of neutrons in an element by using which formula
Atomic mass - Atomic number = neutrons
Avagadros number is the same as the unit of weight
What is a mole?
A 3.0 M HCl(aq) solution contains a total of (Weight per volume)
What is 3.0 moles of HCl per liter of solution
This type of number helps you determine what is being oxidized or reduced
What is an oxidation number
This is the heaviest type of decay
What is Alpha?
Potassium has this number of electrons
What is 19?
Matter that is composed of two or more different elements chemically combined in a fixed proportion is classified as
What is a compound?
According to one acid-base theory, a water molecule acts as an acid when the water molecule (accept or donates H+)
What is when it donates an H+
What is losing electrons?
This type of decay is nothing more than a wavelength but it is the most dangerous
gamma
The charge on Al is +3 how many electrons will be represented in a Lewis dot diagram of Al
What is three
This quantity identifies an element
What is the atomic number
An Arrhenius base yields which ion as the only negative ion in an aqueous solution?
What is a hydroxide ion (OH-)?
This change occurs when Pt+2 is reduced?
What is that the Pt+2 gains electrons and its oxidation number decreases.
What type of radioisotope is used in medicine to treat thyroid disorders
What is Cobalt-60?
All chemical reactions are balanced using these three concepts
what is mass, charge and energy?
Give an example of an ionic compound
answers may vary
The pH scale is based on this number (Hint: if a substance has pH of 1 and changes to a pH of 2 its concentration has changed by a factor of...)
What is 10?
Which energy conversion occurs during the operation of a voltaic cell?
A Chemical energy is spontaneously converted to electrical energy.
B Chemical energy is converted to electrical energy only when an external power source is provided.
C Electrical energy is spontaneously converted to chemical energy.
D Electrical energy is converted to chemical energy only when an external power source is provided.
What is A?
Which fraction of an original 20 gram sample of Nitrogen-16 remains unchanged after 36 seconds (half-life=7.13 seconds)?
What is 1/32 or 0.03