Atoms
Elements
Periodic Table
Bonding
Misc
100
The dense, center of an atom, around which electrons orbit.
What is the nucleus?
100
Elements are made up of only one kind of these.
What are atoms?
100
This number is used to arrange elements on the periodic table.
What is the atomic number?
100
Two or more atoms that are chemically bonded.
What is a molecule? OR What is a compound?
100
An element in this group has 5 valence electrons.
What is Group 15?
200
An uncharged particle in the nucleus of the atom.
What is a neutron?
200
These letters are used as shorthand to identify an element.
What is the atomic symbol?
200
As the atomic number increases across a period, this happens to the atoms.
options-
- increases in size
- increases in number of protons and electrons
200
This type of bond gives metals their special properties (conducting electricity, ductile, malleable, etc.).
What is a metallic bond?
200
This energy level can only hold 2 electrons.
What is the 1st energy level?
300
A positively charged particle that determines an atom's identity.
What is a proton?
300
The atomic number tells you this.
What is the number of protons an element has?
300
This family of elements will not form compounds.
What are the Noble gases?
300
Two or more ions form this type of bond.
What is an ionic bond?
300
CH4 has 5 of these.
What is the number of atoms?
400
A negatively charged subatomic particle that is responsible for the reactivity of an atom.
What is an electron?
400
The mass of an element will change depending on the number of these subatomic particles.
What are neutrons?
400
All elements in the same row or "period" have the same number of these.
What are energy levels?
400
Two or more atoms share electrons to form this type of bond.
What is a covalent bond?
400
Salt water and air are two examples of these.
What are mixtures?
500
The sum of these particles tell you the mass of an atom.
What are protons and neutrons?
500
The unit of mass for elements.
What is atomic mass units?
500
Elements in the same one will likely react the same.
What is Group?
500
CO2 represents one of these.
What is a molecule?
500
This process uses electricity to break the bond between hydrogen and oxygen; it's used to collect H2 as a source of clean energy.
What is electrolysis?