This is the smallest particle that still can be considered an element
What is an atom?
This grew as a series of models that developed from experimental evidence
What is atomic theory?
A chart showing all the elements arranged according to the repeating pattern of their properties
What is the periodic table?
These are the electrons that have the highest energy & are in the outermost energy level
An ion made of more than 1 atom is called this
What is polyatomic?
This is the average mass of all the isotopes of that element
What is atomic mass?
JJ Thomson discovered that atoms contain these negatively charged particles
What are electrons?
A one- or two-letter abbreviation for an element
Daily Double
The ease & speed with which an element combines with other substances is called this
Daily Double
What is its reactivity?
When atoms that easily lose electrons react with atoms that easily gain electrons, they transfer valence electrons to form this
What is an ionic bond?
Substances that form when atoms from 2 or more elements bond together
What are compounds?
The dense center in the middle of an atom
What is the nucleus?
Rows in the periodic table are known as these
What are periods?
What is malleable?
The chemical bond formed when 2 atoms share electrons is called this
What is a covalent bond?
An atom or group of atoms that has either a positive or negative charge
What is an ion?
Rutherford called positively-charged particles in an atom's nucleus these
What are protons?
Atoms with similar characteristics are classified into these, or columns in the periodic table
What are groups?
This material is one that can be pulled out, or drawn, into long wires
What is ductile?
This is a neutral group of atoms joined by covalent bonds
What is a molecule?
A compound that reacts with metals & carbonates, tastes sour, & turns blue litmus paper red
What is an acid?
A particle in the nucleus of an atom. It took scientists a long time to discover it because it has no charge
What is a neutron?
What does each piece of information on this periodic table square mean?
Atomic number
Chemical symbol
Element name
Atomic mass
Thermal conductivity is the ability of an object to do this to heat
What is transfer?
A covalent bond in which electrons are shared equally
Daily Double
What is a non polar bond?