Chapter 1
the study of composition, structure, properties, and reactions of matter
What is Chemsitry?
SI unit for temperature
What is Kelvin?
a change in the state but no change in the identity and composition
What is a physical change?
heat is absorbed
What is endothermic?
Formula to convert celsius to fahrenheit
all substances that make up our world
What is matter?
Multiplication or dividing with sig. figs.
What is measuring with the fewest sig. figs?
describes the ability of a substance to interact with other substances
What is a chemical change?
Good insulator
What is a nonmetal?
What is 1/2mv2?
substances that have the same composition and properties wherever found
What are chemicals?
the final answer is the same number of decimal places as the measurement with the fewest decimals
What is addition and subtraction in sig. figs?
contain two or more different substances that are physically mixed but not chemically mixed
Good conductor
What is a metal?
mgh
What is the formula for potential energy?
a set of general principles that help to describe how a scientist thinks
What is the scientific method?
numbers that do not affect the number of sig. figs.
What are exact numbers?
composed of two or more elements always combined in the same ratio
What is a compound?
Equal to the number of protons
What is the atomic number?
q=mc(Tf-TI)
What is the formula for heat capacity?
45,600,000 in scientific notation
What is 4.56 x 107?
significant figures of 403.50
What is 5?
gas particles change directly to a solid
Equal to the number of protons and the number of neutrons
What is the mass number?
Formula to convert Celsius to Kelvin
What is K = *C + 273.15