Definitions
The Law of Conservation of Mass
What is the idea that mass is neither created or destroyed, only rearranged?
The kind of change which happens when a wire is cut, and the material has not been changed into a new material.
What is a physical change?
The 3 kinds of particles that make up an atom.
What is electron (-), proton(+), and neutron (0)?
The number of protons in the atom is represented by this.
What is the atomic number?
Ionic compounds are formed between these two kinds of elements.
What are metal and nonmetal?
The outermost electrons that give an element its chemical properties
What are valence electrons?
The kind of change when a cake is baked and the original substance becomes something entirely different.
What is a chemical change?
Atoms of the same element with different numbers of neutrons.
What is an isotope?
The number of protons and neutrons in an atom is represented by this.
What is atomic mass?
The name of the molecular compound with formula N2O7.
What is dinitrogen heptoxide?
Any atom with a positive charge
What is a cation?
Different kinds of atoms bonded together into a molecule form this.
What is a compound?
JJ Thompson is credited with discovering this subatomic particle.
What is the electron?
Elements on the left side of the periodic table that tend to lose electrons easily.
What are metals?
The total charge of an ionic compound.
What is 0 or neutral?
A vertical column of elements that have similar chemical properties
What is a group?
This periodic trend increases as you move to the left and down the periodic table.
What is atomic radius or size?
The maximum number of electrons that d orbitals can hold.
What is 10?
Elements in group 7 are called this.
What are halogens?
The formula and name of the ionic compound that forms between Lithium (+1) and oxygen (-2).
What is lithium oxide (Li2O)?
The energy required to remove an electron from an atom
What is ionization energy?
Transferred electrons are lost and gained in this type of bonding.
What is ionic bonding?
This scientists is credited with the quantum atomic model which places electrons in clouds of probability.
Who is Werner Heisenberg?
Alkali metals only have this charge when they form an ion.
What is +1?
The chemical name of H2SO4.
Sulfuric acid