The Atom
What are the three subatomic particles of an atom?
Proton, Neutron, and Electron
The term used to describe the time it takes for half of a radioactive element to decay.
What is half life?
Most of the elements on the periodic table are....
Metals
A + B --> AB is an example of what type of reaction?
A synthesis reaction
Each substance to the left of the arrow in a chemical equation is a....
Reactant
Which two particles are in the nucleus?
Proton and Neutron
What is nuclear energy used for?
What is electricity or nuclear weapon?
The unreactive elements in Group 18 are called
Give the chemical formula for a decomposition reaction?
AB --> A + B
Everything that you end with after a chemical reaction has occurred...
What are products.
The atomic number
What type of energy/radiation is released from fission/fussion?
Gamma radiation
What on the Periodic Table helps you identify the number of valence electrons in an element?
Group Number
A reaction between carbon and oxygen that always produces carbon dioxide and water is called...
Combustion
What does the Law of Conservation of Mass say in regard to chemical equations?
Mass is neither created or destroyed or Everything you begin with in a reaction will show up on the other side of the arrow in a reaction
What has the same number of protons but different number of neutrons for a certain element?
An Isotope
This happens when a large nucleus is broken into two smaller nuclei emitting a large amount of energy.
Nuclear Fission
The most reactive metals on the periodic table are called ....
The alkali metals
A + XY --> AY + X is an example of what type of reaction?
Single Displacement
balance this equation
H2O --> H2 + O2
2H2O --> 2H2 + O2
Which diagrams are used to show only the outer level of electrons for an element?
Lewis Dot
The half life of a substance is 10 years. If you began with 100 g, how much is left after 20 years?
What is 25 g?
Which family of elements contains the most reactive nonmetals?
Halogens
Give the generic formula for a double displacement reaction?
AB + CD --> AD + BC
A _________ chemical equation has the same number of atoms of each element on each side of the equation.
Balanced