How can we help?

You can also find more resources in our Help Center.

10 terms

chemistry chapter 1 section 2

STUDY
PLAY
physical properties
properties that don't involve changes in composition
temperature
physical state of a substance depends on this
volatile
substance that changes to a gas easily at room temperature
density
amount of matter contained in a unit of volume
chemical properties
properties that can be observed only when there is a change in the composition of a substance
instability
a substance's tendency to break down into different substances
law of conservation of mass
states that in a chemical change matter is neither created nor destroyed
energy
the capacity to do work
exothermic reactions
chemical reactions that give off heat energy
endothermic reactions
chemical reactions that absorb heat energy