chapter 1 exam Flashcards
(45 cards)
What is the study of the composition, structure, properties, and reactions of matter
chemistry
What is anything that has mass and occupies space
matter
What are stars made of
plasma
The quantity of matter in the object
mass
what is the space an object occupies
volume
what is all matter made of
particles
describe solids
rigid shape, fixed volume, fixed shape
describe liquids
not rigid, no fixed shape, fixed volume
describe gases
not rigid, no fixed shape, no fixed volume
what are five quantities
length, mass, time, thermodynamic temperature, amount of substance
What system do chemists use
metric system
we’re moving up the conversion chart is the exponent negative or positive
negative
when moving up on the Conversion chart are you moving left or right
left
If asked for a scientific notation what do you use
*10^
formula for DMV

d=m/v
lm=d•v
v=m/d
how to measure on a ruler
round to decimal point of u certainty
if it only measures .1 round .10
sig figs rules
digits to count:
all non zeros
don’t count leading zeros
zeros between integers
trailing zeros only if there’s a decimal point, then they’re all counted
all scientific notation (unless in leading zeros)
Name all of the possible physical changes
boiling, melting, condensing, vaporizing, subliming, freezing
Name all of the possible chemical changes
flammability, neutralization, fermenting, rusting, combusting
what are some evidence that a chemical change has occurred
bubbling, evolution absorption of heat, emission of light
what happens when matter can/can’t be separated
can- it’s a mixture
cant-it’s a pure substance
What two things can a mixture be
homogeneous or hetero generous
what two things can pure substances be
compounds or elements
what is a heterogeneous mixture
Mixture that is composed of more than one phase (oil and water, chocolate chip cookies)
