Lecture 2 Flashcards
What is matter?
anything taking up space or having mass
characteristics of a solid?
definite volume and shape
Characteristics of a liquid
definite volume but variable shape
characteristics of a gas?
variable shape and volume
What are properties?
specific characteristics that can distinguish substances
What are physical properties?
you can observe without change in composition of substance
what are chemical properties?
only evident if substance goes through chemical change
What are the diatomic elements
Hydrogen, Nitrogen, Oxygen, Flourine, Iodine, Chlorine, Boron
What substance cannot be separated by physical means?
pure substances
What is the law of conservation of matter?
mass is neither created or destroyed
What is the law of definite propertions?
a given compound always contains the same properties of elements by mass
what is the law of multiple propertions?
When two elements from a series of compounds the ratio of each elements can always be reduced to a whole number
