chemical reaction vocab
What is a chemical reaction?
A process when atoms are rearranged to produce new substances
What is the meaning of the periodic table?
Mendeleev's arrangement of elements
What does the symbol Cl stand for?
Cl= calcium
What does O stand for?
O= oxygen
What is a precipitate?
A solid substance which forms into a solution
What is a group?
Elements on the periodic table moving top to bottom
What does the symbol S stand for?
S= sulfur
What does H stand for?
H= hydrogen
What is a chemical formula?
You use chemical symbols and numbers to represent the given substance
What are valence electrons?
Something found on the outermost portion of the electron cloud
What does the symbol I stand for?
I= iodine
What does Au stand for?
Au= gold
What is a subscript?
Subscripts tell how many each type of an atom is in a molecule
What is a period?
Elements going from left to right
What does the symbol Cu stand for?
Cu= copper
What does Fe stand for?
Fe= Iron
What is a chemical equation?
An expression that uses symbols to show the relationship between starting substances and substances that are produced by a chemical reaction.
What are metals?
object is shiny, and conducts heat and energy
What does the symbol He stand for?
He= helium
What does Ti stand for?
Ti= titanium