The Language of Chemistry
The study of matter and the changes it undergoes.
Chemistry
Chemical / Physical Change: Cutting paper
Physical
Proposed the FIRST atomic theory
Democritus
Negatively charged subatomic particle
Electron
Express this problem with the correct significant figures: 5.32 kg - 0.759380 kg
4.56 kg
Is the term for the smaller particles that make up an atom.
Subatomic Particles
Extensive / Intensive Property: Specific Heat
Intensive
Came up with the "Law of Conservation of Mass"
Antoine Lavoisier
The small, dense center of an atom
Nucleus
What is a density of a piece of cork that has a mass of 0.650 g and a volume of 2.70 mL?
0.241 g/mL
Is equal to the number of protons in an atom's nucleus.
Atomic Number
Element / Compound / Solution / Hetero. Mixture: Carbon Dioxide
Compound
Discovered the nucleus of an atom. Added bonus: he discovered protons too!
Ernest Rutherford.
The atom is mostly made up of...
empty space
An element has two isotopes: (1) has a mass of 84.9118 amu; % abundance = 72.15% AND (2) has a mass of 86.9092 amu; % abundance = 27.85 %. What is the element?
Rubidium (Rb)
The gaseous state of a substance that is normally either a solid or liquid at room temperature.
Vapor
Extensive / Intensive Property: Color
Extensive
Discovered the electron through his work with cathode rays
J. J. Thomson
The charge and mass of a neutron are as follows: _______ & ________amu.
neutral (OR 0); 1
305 K = ____________ degrees Fahrenheit (round to the nearest whole number)
89 degrees F
Is used to describe the concentration of a solution.
Molarity
Element / Compound / Solution / Hetero. Mixture: Bronze
Solution
Proposed the FIRST accepted atomic theory.
John Dalton
To find the number of neutrons in an atom, you subtract the ________ from the ________.
atomic number; mass number
An iron nail (c= 0.451 J/g x degrees C) with a mass of 12 g absorbs 16.2 J of heat. What is the final temperature, if the starting temperature is 22 degrees C?
25 degrees C