logical approach to observing and collecting data, formulating hypotheses, testing hypotheses, formulating theories that are supported by data
What is the scientific method?
100
number of protons in each atom of that element
What is the atomic number?
100
there are 1000 in one meter
What are millimeters?
100
Find the mass in grams of 3.5mol of Copper.
What is 222g Cu?
200
smallest unit of an element
What is an atom?
200
broad generalizations that explains a body of facts or phenomena
What is a theory?
200
number that contains the total number neutrons and protons
What is the mass number?
200
1000grams equals
What is 1 kilogram?
200
A chemist produced 11.9g of Aluminum, Al. How many moles of aluminum were produced?
What is 0.441mol Al?
300
properties that depend on the amount of matter that is present
What are extensive properties?
300
SI unit for temperatur
What is Kelvin?
300
Avogadro's number
What is 6.022 x 10^23 atoms?
300
Find the density. The sample is 8.4grams and has a volume of 3.1cm^3. ( Make sure your units are correct)
What is 2.7g/cm^3?
300
How many moles of tin are in 2500 atoms of tin?
What is 4.2 x 10^-21 mol Sn?
400
homogenous mixtures
What is a solution?
400
formula for density
What is density=mass/volume?
400
the fact that a chemical compound contains the same elements in exactly the same proportions by mass regardless of size of the sample or source of the compound is known as the law of
What is the law of definite proportions?
400
Convert: 10.5g-> ? kg
What is 0.0105kg?
400
What is the mass of 1.20x 10^8 atoms of copper?
1.27 x10^-14g Cu
500
element that has some characteristics of metals and characteristics on nonmetals
What are metalloids?
500
the fraction form of milli-
What is 1/1000?
500
if two or more different compounds are composed of the same two elements, then the ratio of the masses of the second element combines with a certain mass of the first element is always a ratio of small whole numbers is the law of....
What is the law of multiple proportions?
500
Convert: 548.6mL-> ? cm^3
What is 548.6cm^3?
500
How many atoms of sulfur are in 4.00 grams sulfur?