General Chemistry Questions
Where is the atomic number on your periodic table?
Above the chemical symbol.
If you are working with Carbon Dioxide or Carbon Monoxide, what division of chemistry are you working in?
Organic Chemistry.
What element has the lightest atoms?
Hydrogen.
What is an Atomic Number?
The number of protons in a given element.
Chemistry is study of materials, including altering them. So ripping/crushing a piece of paper is still chemistry.
What group of people are credited with the beginnings of modern chemistry?
The Alchemists of the 1600s who tried to turn any metal into gold.
If your goal is to create new elements, what division of chemistry are you working in?
Nuclear Chemistry
Why are significant figures important in the real world?
Teacher approval.
What is the Mass Number of an atom of an element?
Sum of the protons and neutrons.
If you are working with amino acids or proteins, what division of chemistry are you working in ?
Biochemistry.
Where is the mass number on your periodic table?
Trick question......
There is no mass number on your periodic table, only the atomic mass which is similar but still different from the mass number.
If you are working with Iron Oxide (FeO), what division of chemistry are you working in?
Inorganic Chemistry
Why is the atomic mass on the periodic table not a whole number?
Because that number is the average mass of all the naturally occurring isotopes of that element.
What is precision?
How close measurements agree with each other.
What did Robert Milliken contribute to chemistry?
Discovered the charge of an electron which combined with J.J. Thomson's charge/mass ratio allowed scientist to determine the weigh of a single electron.
What is an example of Chemistry causing large scale change throughout human history? Be specific.
Chemistry is altering of materials. Stone Age allowed humans to make better tools and settle instead of being nomads.
Bronze Age allowed even better tools and led to first permanent civilizations.
Iron Age created great political change by sparking more and more wars because of iron weapons.
Microchips made from silicon have created computers, phones, and all sorts of other technology that has greatly altered the world.
If you are trying to figure out which elements are more reactive, have larger atomic nuclei, have higher electronegativity, etc., what division of chemistry are you working in?
Analytical Chemistry
This question will be worth 750 points because it is also hard.
Only one of Dalton's four postulates he published with his atomic theory was incorrect. Which one was it?
2. All atoms of a given element are identical, but different from other elements.
We know now that there are isotopes which are atoms of the same element with different numbers of neutrons.
What is accuracy?
How close measurements are to the actual value you are measuring.
How was the atomic mass unit established?
By looking at hydrogen atom and determining hydrogen atoms were the lightest and then scientists assigned them the mass of 1 AMU.
Why is Chemistry often called "The Central Science"?
Chemistry is used in almost all branches of science. At some level almost all economic activity or business will require knowledge of a chemist.
If you are working in thermodynamics or kinetics, what division of chemistry are working in?
Physical Chemistry
This question will be worth 1,000 points. Good Luck :)
What were John Dalton's four postulates he published with his atomic theory?
1. Each element is made up of extremely small particles called atoms that are the smallest unit of matter.
2. All atoms of a given element are identical, but different from other elements.
3. Atoms are neither created nor destroyed in a chemical reaction.
4. A given compound always have the same relative number and kinds of atoms.
Define all three to get the points: Proton, Neutron, and Electron
Proton is the positively charged subatomic particle found within the nucleus.
Neutron is the subatomic particle with no charge that is found within the nucleus.
Electron is the negatively charged subatomic particle found outside the nucleus.
Look at Mr. Breitenfeld's Drawing on the board and describe the archer's pattern ACCURATELY.
The shooter is both accurate and precise because their entire group is in the bullseye.