F ------> F+
How do I complete this reduction reaction
Add one electron to the right side
100
In the compound H2O, the percent of Oxygen?
About 89%
100
The three parts of the lithosphere
What is the crust, mantle and core
100
These types of elements take up the majority of the periodic table and from positive charges
What is a metal
100
This is the property of some chemical elements to exist in two or more different forms, in the same physical state
What is an allotrope?
200
The oxidation of Sr, in group 2 of the periodic table
What is Sr ------> Sr^2+
200
The percent of oxygen in C6H5OH?
What is 17%
200
Adding the protons and neutrons together will give you this value
What is the mass number
200
This type of element tends to be brittle and forms a negative charge when it ionizes.
What is a non metal
200
This material is a type of rock that contains sufficient minerals with important elements including metals that can be economically extracted from the rock.
What is an ore
300
The oxidizing agent in this process
Br + Na -----> Na^+ + Br^-
What is Bromine
300
The percentage of Copper in Cu2O?
What is the 88.2%
300
The element that has a mass number of 65 and 35 neutrons.
What is zinc?
300
Which group on the periodic table is completely inert?
What is 8A, the noble gases.
300
This is each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties;
What is an isotope
400
Magnesium Atom
What is the reducing agent in this reaction?
Mg + 2Li^+ -----> Mg^2+ +2 Li
400
100%
What do the individual parts of a compound add up to?
400
The charge of the sodium atom in Na2O
What is +1
400
The vertical columns on a periodic table that contain elements which have similar reactivity
What is a group or a family
400
A metal made by combining two or more metallic elements, especially to give greater strength or resistance to corrosion.
This is a homogenous mixture, a solid solution.
What is an alloy?
500
To balance this equation add ____e- to the [left or right] side of the equation.
Cd ----> Cd^2+
What is 2
500
The percent of Tellurium in Xocometacatite
Cu3(TeO4)(OH)4
What is 28.3%?
500
The three major parts of the earth?
What are lithosphere, atmosphere and hydrosphere?
500
This area of the periodic table contains metals with variable charges
What are the transition metals
500
a hard, strong, gray or bluish-gray alloy of iron with carbon and usually other elements, used extensively as a structural and fabricating material.