Let's get physical (or chemical)
Change in color, production of gas, formation of a precipitate
Subatomic particle with a negative charge
What is an electron?
Who is Mendeleev?
the left of the "stair case"
What are metals?
when two elements share electrons
What is a covalent bond?
The composition of the matter does not change
What is a physical change?
Subatomic particles located in the nucleus of an atom
What are protons and neutrons?
Horizontal rows of the periodic table
What is a period?
the non reactive group of elements
What are noble gasses?
The number that indicates how many electrons an atom wants to lose or gain.
What is an oxidation number?
When acid is added to milk cottage cheese is formed.
What is chemical change?
Mass number - Atomic number
What is number of neutrons?
Vertical columns of the periodic table
What is a group?
determines the order of elements in the modern periodic table
What is atomic number?
Bond that occurs when elements completely give away electrons
What is an ionic bond?
melting butter from a solid to liquid state
What is physical change?
Elements that have the same atomic number but different mass numbers
What is an isotope?
Determines the number of orbitals elements have.
What is a period?
this group has a single valence electron and are highly reactive
What are alkali metals?
When naming compounds with this type of bond you must use prefixes for the second word and the first word if it is more than one.
What is a covalent bond?
type of separation technique that uses boiling point to separate
What is distillation?
This number is always the same for an element
What is the atomic number?
Determines the number of valence electrons an element will have.
What is a group?
React easily with metals and have 7 valence electrons
What are halogens?
Roman numerals must be used when this type of element is involved in order to indicate the charge.
What is a transition metal?