True or False: Electrons are much lighter than protons.
True
The verticle columns of the Periodic Table are called?
Periods
What is an Isotope?
Isotopes have the same number of protons but different number of neutron.
Most of Atom's Volume is Composed of?
Empty space
How do you determine the number of Neutrons?
Calculated by subtracting protons from mass number.
How do you find the Atomic Mass?
Mass number is protons plus neutrons combined.
Rusting of nails is a chemical reaction. True or False
True
Describe an Electron
Electrons are subatomic particles surrounding the nucleus with negative charge.
How many neutrons does oxygen have if it has 8 protons and a mass number of 16?
8
List some chemical Reaction Signs
Color change, gas production, or temperature change indicate reactions.
What is the law of Conservation of Mass?
Mass cannot be created or destroyed
An atom Sulfur has 16 protons and 16 neutrons. What is the Atomic Mass of Sulfur?
Approximately 32 due to 16 protons and neutrons.
What does an equation correctly look like if following the Conservation of Mass?
Balanced equations have equal atom counts on both sides.
What are the majority of elements in the Periodic Table classified as?
Most elements are classified as metals.
What is the Nucleus composed of?
All atomic nuclei contain protons and neutrons.
What is the Symbol for Silver?
Ag is the symbol for silver.
How do you determine the number of Protons?
Determined by the atomic number of an element.
Neutron vs Electron
Neutrons are neutral; electrons are negatively charged.
We are Valence Electrons found?
Electrons in the outermost shell of an atom.
What are some Proton Characteristics?
Protons are positively charged and determine element identity.
How many electrons are allowed on the first ring of the electron cloud?
Maximum of 2 electrons allowed in this level.
When the equation Ca + H2---->Ca2H2 is correctly balanced using the smalled whole numbers, the coefficient of Ca is?
2