science quiz study Flashcards
(12 cards)
What is matter and what is not?
matter is something that has mass and space, and matter is not energy or heat.
What is a mechanical mixture
a mixture with multiple phases
What is a solution
multiple elements that only have one phase
What is a pure substance
a pure substance are made of the same particles
What is a compound
a compound is made of multiple particles bond together to create a new element.
What is a quantitative property?
a quantitative property is a property of a substance that you can measure
What is a qualitative property?
qualitative property is something that cannot be measured
what are the six changes of state and density
deposition = gas to solid
sublimation = solid to gas
freezing = liquid to solid
melting = solid to liquid
evaporation = liquid to gas
condensation = gas to liquid
how do you calculate electrons
electrons =atomic number = number of protons
how do you calculate number of neutrons
atomic mass minus atomic number
What are the examples of a chemical change
Colour
odour
temperature
gas
bubbling/fizzling
electricity/heat production
what is a physical change
when the change is reversible
