Science 10 - Chemistry 2 Flashcards
On their own how many ions of phosphorus are there?
4
On its own how many ions are single sulfur?
8
On its own how many ions does bromine have?
2 (diatomic)
On its own how many ions does chlorine have?
2 (diatomic)
On its own how many ions does fluorine have?
2 (diatomic)
On its own how many ions does oxygen have?
2 (diatomic)
On its own how many ions does nitrogen have?
2 (diatomic)
On its own how many ions does hydrogen have?
2 (diatomic)
what is formed from the reaction of a pricipitate
solid
What is it called when something is very soluable
aqueous
solubility definition
dissolves in water
what is something that is slightly soluble called
solid (precipitate)
What is a chemical reaction
occurs when one or more substances change to form new substances
what are reactants
are the substances which undergo a chemical reaction
what are products
the substances that are formed from a chemical reaction
what is a formation reaction
reactant + reactant = product (A+B=AB)
decomposition reaction define
compound breaks down into elements (AB=A+B)
Single replacement define
element +compound = element + compound (AB + C = AC + B)
double replacement define
compound + compound = Compound + compound (AB + CD = AD + CB)
What rwo elements are liquid?
mercury and bromine
molecular compounds are usually gas t or f
t
is boiling water a physical or chemical change
physical
what is the evidence of a chemical change?
change in energy, formation of a precipitate, formation of gas(bubbles), change is colour, change in odour
why is water weird
- water expands when its freezes where other substances shrink
- it is polar (one positive end and one negative)
- it has a bent shape which is from its polarity
- polarity causes hydrogen bonds
when you need to get atoms from moles do you multiply or devide?
multiply by 6.02 x 10^23
when you need to get moles from atoms do you devide or multiply?
devide by 6.02 x 10^23
