Unit 1 Test Flashcards
What is the density formula?
mass/volume
What is the volume formula?
mass/density
What is an intensive property?
a property of something that does NOT change when the size of it changes
What is an extensive property?
a property of something that DOES change when the size of it changes
What is the difference between a theory and a law?
Theory-Why something happens
Law-What happens
How do you convert celsius to fahrenheit?
(temp C)•(9/5)+32
How do you convert fahrenheit to celsius?
((temp F)-32) / (9/5)
how do you find the # of neutrons in an atom?
atomic mass-atomic #
What are 2 conclusions from Rutherfords experiment?
- An atom must have a positively charged center that contains most of its mass
- An atom are mostly empty space
What are the common periodic table names for groups 1,2,17 and 18?
- Alkali Metals
- Alkaline Earth Metals
- Halogens
- Noble Gases
Why is JJ Thompson significant?
He discovered the electron
Why is Marie Curie significant?
She described radioactivity
Why is John Dalton significant?
His atomic theory
Why is James Chadwick significant?
He discovered neutrons
Why is Millikan significant?
He did the oil drop experiement and discovered the charge of electrons
Is density intensive or extensive?
intensive
How do you convert between inches and centimeters?
1 inch=2.54 cm
how many ml in 5000 ul?
5 ml
What is the percent error formula?
actual-theoretical/actual •100
What is the law of conservation of mass?
mass is neither created nor destroyed
What is the Law of definite proportions?
a given compound always contains exactly the same porportion of elements by mass
What is the law of multiple porportions?
A law stating that when 2 elements form a series of compounds, the ratios of the masses of the second element that combine with 1 gram of the first element can always be reduced to small whole numbers
in what situation will the number of protons and electrons differ when finding information on an atom?
The atom is charged
How do you write nuclear symbols of elements?
Mass
Atomic# element
Which elements are metalloids?
B, S, Ge, As, Sb, Te
What type of compound when naming do you put the prefix before the first element?
Covalent
What type of compound when naming do you need to keep track of charges?
Ionic
What do you name an acid without oxygen in it?
hydro-(anion)-ic acid
How do you name an acid that has oxygen and ends in -ite?
(root)ous acid
How do you name an acid with oxygen ending in -ate?
(root)ic acid
When do you use the latin version of a metal in coordination chemistry?
When the ion is negative
