Isotopes 1
Isotopes 2
RAM, RFM, and Percentage by Mass 1
RAM, RFM, and Percentage by Mass 2
Special Elements
200
What determines the atomic number of an element?
The amount of protons
200
What determines the atomic mass of an element?
The number of protons and neutrons
200
What is the name of the AVERAGE masses of an element's isotopes?
Relative Atomic Mass
200
What is the name of a SINGLE isotope's mass?
Atomic Mass
200
What are the elements in group 8 (0) called?
Noble Gases
400
Which subatomic particle can change in number without changing the element?
Neutron
400
What is the atomic number of Tungsten?
74
400
What is the name of the sum of all the relative atomic masses in a chemical formula?
Relative Formula Mass
400
What is it called when you divide an element's relative atomic mass by the relative formula mass of the formula its in?
Percentage by mass
400
Name 2 Characteristics of Halogens:
Reactive
Non-metal
Typically Diatomic
Toxic
7 Electrons in outer shell
600
What is the atomic mass of a carbon atom with 7 neutrons?
13
600
What is the atomic mass of a Zinc atom with 35 neutrons?
65
600
Calculate the Relative Atomic Mass of the following:
10.801
600
Calculate the Relative Atomic Mass of the following:
92.429
600
What happens to the reactivity of Alkali metals as you go down the group?
They get more reactive
800
What is the general form of isotope notation?
Element name - Atomic mass number
OR
Chemical symbol - Atomic mass number
800
Draw the standard chemical notation (the box one) of Scandium with 30 neutrons:
51
Sc
21
800
Calculate the Percentage of Chlorine in ZnCl2
About 52.2%
800
Calculate the Formula Mass of HClO3
About 84.458
800
Give 2 differences between Alkaline Earth Metals and their Alkali Metal Neighbors:
Less reactive
More dense
Harder
Higher melting points
1000
Write the isotope notation of a iron atom with 28 neutrons
Iron - 54
or
Fe - 54
1000
Write the isotope notation of a radium atom with 101 neutrons:
Radium - 189
OR
Ra - 189
1000
Calculate the Percentage of Hydrogen in C8H9NO2:
Around 5.96%
1000
Calculate the Formula Mass of C2H4O
About 44.05
1000
Why are halogens called halogens?
Salt maker