Structure of Atoms
The subatomic particle that makes up the electron cloud
What is an electron?
the number of protons in the nucleus of an atom; used to determine an element's position in the Periodic Table
What is the atomic number?
diagram that demonstrates the flow of energy through a food chain
What is the energy pyramid?
change which alters matter without changing its chemical composition or the identity of the substance
What is a Physical Change?
The two subatomic particles that make up the nucleus
What is protons and neutrons?
average mass of one atom of an element (from particles in the nucleus)
What is the atomic Mass?
the position that an organism occupies in a food chain, food web, or energy pyramid
What is a tropic level?
the formation of a new substance with different properties; cannot be undone by physical means
What is a chemical change?
The subatomic particles that are in the outer ring of the electron cloud.
What are valance electrons?
This part of the table tells you how many energy shells
What is rows or Periods?
The amount of energy being passed in an ecosystem from one trophic level to the next
What is the 10% rule?
Can not change the matter back to its original form and can happen with fire
What is a chemical change?
Full outer ring and not very reactive
What is a stable atom?
This part of the table tells you the similar properties and reactivity of the atom
What are columns or groups?
All energy pyramids start with this type of energy
What is solar energy?
This change is easily reversible like melting of ice
What is a physical change?
The cause of the reactivity of an atom
What are valence electrons or electrons?
Reactivity is starts on this location of the table
What is the stair stepper?
All energy pyramids run in this direction
What is bottom to top?
Examples: mending a broken bone, burning paper, nail rusting, frying chicken
What are examples of chemical changes?