AP Review Flashcards
1
Q
Sig Figs
A
All nonzero digits are significant
Zeros between nonzero numbers are significant
Zeros beyond the decimal point at the end of a number are significant
Zeros preceding the first nonzero digit in a number are not significant
The number of sig figs of the answer to a mathematical equation must always be equal to the least amount of sig figs present
2
Q
An element is composed of …
A
atoms
3
Q
All atoms of a given element display …
A
the same properties
4
Q
Law of conservation of mass
A
There is no detectable mass change in any given chemical reaction
5
Q
Law of constant composition
A
A compound always contain the same elements in the same proportions by mass
